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Asian lesbian squirt. My chinese girlfriend. Last added Penetration of big boot. Rusya escort porn. Wife suck big dick. The workaround is to enter the switchport access vlan dynamic interface configuration command separately on each port. The workaround is to click Yes when you are prompted to accept the certificate. Catalyst S switches internally support up to 16 different control plane queues.

Each queue is dedicated to handling specific protocol packets and is assigned a priority level. For example, STP, routed, and logged packets are sent to three different control plane queues, which are prioritized in corresponding order, with STP having the highest priority. Each queue is allocated a certain amount of processing time based on its priority.

The processing-time ratio between low-level functions and high-level functions is allocated as 1-to Therefore, the control plane logic dynamically adjusts the CPU utilization to handle high-level management functions as well as punted traffic up to the maximum CPU processing capacity. Basic control plane functions, such as the CLI, are not overwhelmed by functions such logging or forwarding of packets.

If this message appears, check that there is network connectivity between the switch and the ACS. If this happens, enter the no auto qos voip cisco-phone interface command on all interface with this configuration to delete it. Then enter the auto qos voip cisco-phone command on each of these interfaces to reapply the configuration. From the Settings window, choose Automatically.

Click OK to exit the Internet Options window. If you are not using the default method of authentication the enable password , you need to configure the HTTP server interface with the method of authentication used on the switch. Configure the HTTP server interface for the type of authentication that you want to use. The device manager uses the HTTP protocol the default is port 80 and the default method of authentication the enable password to communicate with the switch through any of its Ethernet ports and to allow switch management from a standard web browser.

You should write down the port number through which you are connected. Use care when changing the switch IP information. The Bug Search Tool BST , which is the online successor to Bug Toolkit, is designed to improve the effectiveness in network risk management and device troubleshooting. The BST allows partners and customers to search for software bugs based on product, release, and keyword, and aggregates key data such as bug details, product, and version.

The tool has a provision to filter bugs based on credentials to provide external and internal bug views for the search input. To view the details of a caveat listed in this document:. Enter the bug ID in the Search For: field. Unless otherwise noted, these caveats apply to the Catalyst , , S, and switches and to Cisco EtherSwitch service modules:. Mediatrace does not report statistics on the initiator under these conditions:. The workaround is to ensure that the mediatrace ingress and egress connections are on the stack master or to configure a Catalyst E or X as the stack master and then reload the switch stack.

On a switch stack, when an IP phone connected to a member switch has its MAC address authorized using the critical voice VLAN feature, if a master changeover occurs, the voice traffic is dropped. This occurs because the switch initially drops the voice traffic before reauthenticating critical voice VLAN traffic. The dropped entries are removed when critical voice VLAN authentication occurs. The dropped entries are removed when the IP phone is reauthenticated.

ASP now uses a device classifier, which determines the type of device that is connected to the switch. As a result, ASP has no control over the protocol type that is used to detect the device. Therefore, the protocol detection controls are deprecated. When you enter the macro auto global control detection command, the protocol does not show up in the running configuration; however, the filter-spec command is shown in the output.

To see the deprecated commands, enter the show running config deprecated global and interface configuration command. The workaround is to use the power inline consumption command in interface configuration mode. In a switch stack, multicast traffic can be lost for up to 60 seconds when the master switch is reloaded. Because the platform does not support multicast non-stop-forwarding NSF , the time before traffic re-convergence after a switchover can vary.

When sampled NetFlow is configured with the command ip flow monitor fm-3 in , the sampler tables are not exported to the collector. The workaround is to use the configuration command ip flow monitor fm-3 sampler s-1 in.

While configuring VLAN load balancing using Resilient Ethernet Protocol REP on ether channel interface where bundled interfaces are spread across member stack switches, the MAC address flaps when the ether channel state changes from open to alternate. A switch stack of Catalyst v2 switches with more than five members may exhaust system memory and become inoperable.

The workaround is to limit stacks to five members or fewer. After you upgrade the switch to The workaround is to limit the memory that is used by different features on the switch, if this release is required. You can reduce memory usage by minimizing the number of trunk ports and VLANs in use on the switch. When a configured macro runs twice in quick succession by the ASP, the following traceback may be seen.

In such cases, macros need to run at least twice in quick succession. The above traceback is not harmful but is expected. The switch experiences continuous traceback and CPU hog when you configure the scheduler max-task-time command. The workaround is to disable the scheduler configuration.

Use the Bug Search Toolkit to view the details of a caveat listed in this section. Switch crashes after getnext on the last cafServerAliveAction index. When enable ip source guard, a part of the clients cannot communicate. IPv6 neighbor discovery packet processing behavior. Switch fails while copying a configuration file to running-config using RCP. No warning message when switch configures "ip tcp adjust-mss".

Shutdown is displayed with linkup channel member port on show run. Broadcast packet does not send when port channel changes to normal port. Cannot apply REP config under portchannel after initial boot up. No simulated EAP success message to the client for credential failure. CX responds to ARP request from management port. Members in a cluster unable to save configuration in IOS EEM Tcl policies fail due to false out of memory error.

Unicast EAP frames with EtherType e are not getting forwarded in switches installed with new releases. Inconsistency in config privilege commands as seen in running-config. Abnormal dot1x authentication failure msg from some specific mac address. Switch sent Failure packet after reboot and caused PC to fail authenticate. Any group specific query with a router alert option drops. IPv6 mld traffic causes high CPU utilization on the switch.

A phone connected to a port with EnergyWise activitycheck configured, switches off even though there is an active call. Telnet sessions that are incompletely established may not time out after a period of inactivity, leading to eventual exhaustion of available VTY lines. It needs to be manually cleared via clear tcp only clear line does not work. The workaround is that it needs to be manually cleared via clear tcp tcb 0xXXXX only clear line does not work.

The process Kron CLI Process show tech-support password redirect tftp crashes because of memory corruption. The configuration is as show below:. When rsh command constructs are used within Tclscript, Tcl fails to send the router hostname which causes the rsh command constructs to fail authorization to a remote router.

An EEM script that executes on a syslog event causes the Cisco router to fail with the following error message. Exception to IOS Thread:. It seems that the switch has picked up interface Fa1 macaddress as its engineID. FastEthernet1 is down, line protocol is down. Hardware is RP management port, address is The workaround is to manually configure snmp engineID from cli. When a 1 gig sfp is inserted in a fuller stack with sierra as master, running the sh inventory command does not display the inserted sfp details of the member switch.

Topology used is stack with sierra as master and fuller as member both are 48 ports. The Privilege commands are not appearing in the configuration of a Catalyst switch. When you enter the privilege interface level 3 switchport port-security mac-address sticky command and save the configuration, the command is not visible in neither the startup configuration nor the running configuration.

However, privilege level 3 users can view the command and can use it. If you reload the switch, the command is still is not visible in the configuration and also becomes unavailable to the privilege level 3 users. The workaround is to use the aaa authorization global configuration command to access the commands available for a particular user from the AAA server. The workaround is to disable https secure communication and use http for HTTP requests. On the Cisco enhanced EtherSwitch service module SM-ESP , running the logging source-interface command, does not set the source interface for syslog messages sent to a syslog server.

In a Catalyst X switch stack, the switches experience a slow performance with the following message. Sometimes the switch stops responding and is not recovered until power cycling. You may also observe the following messages when the problem occurs.

Disabling linecard. Expected during linecard OIR. The issue is observed in switches running It also includes The workaround is to configure a longer logging interval. For example,. If the issue persists after setting a longer logging interval, you must power cycle the switch.

In a switch stack consisting of Catalyst S switches running This issue is observed when the number of member ports is higher than 4. The workaround is to configure the missing MAC addresses manually. A change in the behaviour of DHCP client is observed between The output is as shown:. When trying to remove the macros by running the command " no macro auto global processing ", the CPU comes back to normal but the master switch crashes. The workaround is to reload the stack. The CPU remains low for a while.

Removing the macros at this time does not cause the master switch to crash. After system reload, ip ssh source-interface shows in startup-config but disappears from. This is seen in both the scenarios as mentioned below. When around Vlans are configured on a switch running IOS The issue is not seen on switches running IOS The workaround is to disable the device sensor as no macro auto monitor.

Designated port on the Root Bridge experiences a block forward for 30 seconds. This issue occurs because the message-time the period of time a packet is alive in the network is almost equal to max-age the period of time a packet is allowed to stay in the network. The CDP neighbor devices are discovered initially on the Gi0 interface of the AP and then after a few seconds, the neighbour devices are discovered on the main interface and the sub-interface Gi0 and Gi0. The workaround is to disable LLDP on the switch interface.

When port-security is configured on all ports and when the end host is moved, the mac address table is out of sync. When a PC with The Switch deletes running It makes authentication process fail on the machines which can only complete it in first run. The show env stack command displays the following output:.

Temperature Value: 35 Degree Celsius. Yellow Threshold : 46 Degree Celsius. Red Threshold : 60 Degree Celsius.

Temperature Value: 34 Degree Celsius. This is because switch expects the packet to arrive on voice vlan from EX, but EX is sending packets on data vlan. All DHCP requests get dropped at the switch. Hence EX is not able to get the ip address. The workaround is to disable one of the following:. Due to a timing issue, the port channel member port on the slave switch of the stack loops during boot up. The issue occurs only on the member port that is configured as the first port in a cross-stack EtherChannel configuration and when Nexus devices are connected to Cisco devices.

Due to Link Aggregation Control Protocol LACP graceful convergence, when both the devices are up and in sync S state, Cisco devices start transmitting even before the devices get onto collecting C state.

This causes the port to be pulled down by the Nexus devices. When this happens during boot up, the EtherChannel hardware programming for the port is cleared even when the port is bundled in the port-channel. When a switch stack is configured in VTP client mode with VTP password, the show command for the stack master displays the VTP operating mode as client, whereas the member switches display the VTP operating mode as server.

When the interface is lost in a port channel the flow switch over to the backup link is faster for 10G uplink when compared to a 1G uplink. This is because interface state polling is faster for 10G uplink than 1G uplink.

When you reload the first switch, the auto configuration does not start. The workaround is after you configure the SVI, remove the local proxy ARP configuration by entering the no ip local-proxy-arp command, and reconfigure it by entering the ip local-proxy-arp command. A switch configured with login quiet-mode resets when you enter the login block-for or no login block-for commands.

Nevertheless, to avoid a reset, do not enter the login block or no login block-for commands. When you configure Flex Link on stacks containing interfaces from different switches, the interfaces start flapping continuously.

The workaround is to remove the Flex Link configuration from the interfaces. Port-channel interface flaps while adding or removing a VLAN from the trunk on a port-channel interface if one or more port members are not in P or D states. The workaround is to configure enable secret command on an IOS device without Type 4 support, copy the resulting Type 5 password, and paste it into the appropriate command on the upgraded IOS device.

In a stack of Catalyst Switches, port security enabled ports block all the network traffic through them. Using the sh mac address-table command shows that the mac address is learned as static on the master switch, whereas the member switches do not have this mac address on their mac address table. Configuring logging buffered [size] command with large buffer size causes the switch to experience an out of memory or low memory condition.

The workaround is to reduce the logging buffer allocation using the CLI. The workaround is to use the CLI to get the correct values. The host IP address is not displayed when you run the sh auth sess int det command. The switch port goes in to the err-disabled state due to port security violations. The workaround is to run the no switchport command on the interface.

Device under test DUT fails with traceback when you enter the configure replace target-url command. In a switch stack, if a stack member is connected to a Meru access point that requires The stacked switch setup fails when you change or remove an existing password while the relayed console waits for the authentication prompt. The workaround is to reduce the number of changes to the password in the console or VTY when the relayed console waits for the authentication prompt.

The issue occurs after reloading the stack members or after online insertion and removal OIR of the transceivers that are DOM capable. When the source starts sending traffic to the multicast group, an S,G is created and some of the initial packets sent by the source are lost. Once the S,G is programmed for the traffic sent by the source, all the subsequent multicast traffic reaches the receiver. The blocked port on a Catalyst Switch, receives and forwards a malformed TCP packet thereby causing the packet to loop continuously in the network and flooding to all the ports of the VLAN.

This issue takes place only in stack configurations. The workaround is to use vrf definition command instead of ip vrf command to configure per-VRF.

After performing a shut or no shut on the ports of a Catalyst Switch, the status of some of the ports are displayed as Not Connected , even if they are connected to a remote device. The workaround is to perform a shut or no shut on the affected ports. In the switch running earlier to Cisco IOS software release The workaround is to upgrade the switch to Cisco IOS software release The switch reboots if the shutdown and no shutdown commands are repeatedly entered for the alternating ports in an 8-node Resilient Ethernet Protocol REP ring segment.

The following error message is displayed:. The workaround is to downgrade the switch to When you repeatedly run the shut and no shut command in the alternating ports on a 8 node REP ring, the stack member with REP secondary edge port drops the multicast traffic for 20 to 50 seconds.

This feature, which previously showed errors, is now functioning properly. The workaround is to reinsert the module into the switch. The workaround is to enter the shutdown command followed by the no shutdown command, which will recover the failed links. Sometimes the following log message is displayed:. The command power inline port 2x-mode was not supported on the switch.

This has now been fixed. The workaround is to either disable multicast fast convergence or configure IGMP version 3 on switch virtual interface. The workaround is to check if the displayed VLANs are internal and then to hide them. The workaround is to implement SNMP view using the following commands:. As a result, egress traffic to another router on an SSH connection is blocked. The device connected to the switch crashes when a CDP data frame is processed. The workaround is to disable CDP using the no cdp run global configuration command.

This workaround is not applicable if the connected device relies on or supports a phone or voice network. The workaround is to apply protocol filters to the device sensor output by entering the following global configuration commands:. Spurious traps observed periodically on removal of power to RPS. STP loop occurs on Flexstack connected by parallel links when a link state is changed on Flexlink port. The workaround is to change the switch to root bridge.

The traffic continues to take failed PBR path instead of the next available best path. The workaround is to delete the duplex full configuration and configure again. If a policy map attached to the switch interface is modified then the corresponding QoS policy works incorrectly. The workaround is to delete the policy map, create a new policy map and then attach it to the interface.

This issue occurs when the WCCP cache engine is shut down and the cache is not cleared. When native VLAN is configured on the trunk or when switchport trunk native vlan 99 is configured on the interface, spanning-tree instance is not created for native VLAN.

The workaround is to keep VLAN1 as a native on the trunk. To disable dot1x internally, run the no macro auto monitor command. The stp instance is created for native vlan 99 after running the show and no show command on the interface. When a member of stack is reloaded, the uplink trunk connected to Catalyst switch becomes non-trunk causing STP issues on the switch. When a member of stack with fiber SFP uplinks is reloaded, it results in STP issues on the stack and the internal stack ports on the switch becomes the root port.

CRC errors are reportedwhen traffic is sent from the peer ports of a switch. The workaround is to remove the WCCP redirects command from the interface and then add them back on the interface.

The work around is to use the egress span iso of the ingress span and span the malformed TCP packets to span destination port as there are no classification checks in the egress interface for parse fail conditions.

On the Catalyst S switch stack, when the login block command is configured and the running config is saved using the wr command on the master, it brings the master down.

When the running config is saved on the new master , the following lines are displayed on entering the show running-config command. When the secret password is configured, the password is not saved.

The default password is used as the secret password. The workaround is to use the default password to login and then change the password. This symptom is observed in Cisco IOS The known workaround is to enter the no service dhcp command if the switch is not a DHCP server and configure the device sensor as follows:. When a client fails to authenticate in the multi-auth mode, the session continues to be active indefinitely.

The workaround is to enter the clear authentication sessions privileged EXEC command to clear information for all authentication manager sessions.

The down-when-looped interface configuration command is not supported with default speed or with BaseT advertisements on the gigabit medium independent interface GMII interface. This is because the down-when-looped feature and BaseT advertisements both make use of the "next page" function as defined in IEEE Cisco has released free software updates that address this vulnerability. There are no workarounds available to mitigate this vulnerability.

The Cisco IOS Software implementation of the virtual routing and forwarding VRF aware network address translation NAT feature contains a vulnerability when translating IP packets that could allow an unauthenticated, remote attacker to cause a denial of service DoS condition.

Workarounds that mitigate this vulnerability are not available. When two traps are generated by two separate processes, the switch fails if one process is suspended while the other process updates variables used by the first process.

If a redundant power supply RSP switchover occurs during a bulk configuration synchronization, some of the line configurations might disappear. The workaround is to reapply the line configurations. This restriction has been removed, and several IP addresses can now be mapped to a single MAC address. The show ip dhcp pool command displays a large number of leased addresses. The workaround is to turn off ip dhcp remember and reload the switch.

The secure copy feature copy: source-filename scp: destination-filename command does not work. This problem occurs when the Enterprise Policy Manager EPM for a device connected to an interface is authorized in closed mode and no policies are configured or downloaded. If another device is connected to this device, restricted VLAN authentication event interface configuration command is enabled on the port. When Catalyst switch or Catalyst is configured as a Layer 3 switch with local connected hosts, the switches drop large IPv6 traffic loads intended for local connected hosts.

The workaround is to perform the following actions:. A Platform assert failure message is displayed on the switch. Traceback occurs after deleting the static mac-address table. The workaround is to set the dynamic mac-address table and to ensure that the return value of the API that allocates SD is checked correctly. When the ip rsvp snooping command is enabled on a Layer 2 environment, the switch stops forwarding the metadata packets.

When the master switch Switch A is reloaded or loses power and rejoins the stack as a member switch, any traffic stream that exits Switch A is dropped because the newly joined member is not able to establish an Address Resolution Protocol ARP entry for the next hop router or switch.

The workaround is to add a static ARP. Local web authorization and HTTP services on the switch do not respond because of a web authorization resource limitation in the system. These are possible workarounds and are not guaranteed to solve the problem:. The macro is applied to devices such as PCs, laptops, and printers. You do not need to configure MAC operationally unique identifier OUI -based triggers and map these triggers to a macro for these devices.

The Smart Install client feature in Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. Affected devices that are configured as Smart Install clients are vulnerable. There are no workarounds for devices that have the Smart Install client feature enabled.

If an interface is configured with the switchport port-security maximum 1 vlan command, the following error message is displayed:. The flash memory is corrupted when you format the flash manually. The workaround is to reload the switch. If the Performance Monitor cache is displayed using the show performance monitor cache command and you attempt to stop the command output display by entering the q keyword, there is an unusually long delay before the output is stopped.

The workaround is to enter the term len 0 privileged EXEC command so that all command outputs are displayed without any breaks. MACsec interface commands are not accepted on the switch except when you enter the sap pmk key modelist no-encap command.

The device-sensor accounting global configuration command is not available. When a Catalyst S series switch is booted up, a large number of Yeti2S88gMdioWr: Unknown status for write operation messages may be written to the console. Although the error messages may substantially increase bootup time, the switch is fully functional after Cisco IOS boots.

The workaround is to power cycle the switch for a quick recovery. This is a software issue and the switch does not require replacement. When a switchover occurs in a switch stack, the host session information is lost. The workaround is to reauthenticate all the clients. When the show epm session summary or show epm command is entered from an SSH or telnet session and another command is entered from the console, the switch might unexpectedly reset and generate crash information.

The switch might occasionally reload after experiencing a CPU overload, regardless of what process is overloading the CPU. The switch downloads the running IOS image from the TFTP server and reboots even though the same image is currently loaded and running.

An attacker could exploit this vulnerability by sending a crafted request to an affected device that has the DHCP version 6 DHCPv6 server feature enabled, causing a reload. This advisory is available at the following link:. When an interface is configured with the mls qos command, traffic is not matched by port-based QoS ACLs that use the range option. The workaround is to is to configure the switch using the single port eq keyword. Alternatively, you can configure the trust under class-default setting for the same policy-map that uses the acl-range option.

In a switch stack, you cannot establish a console session with a member switch when an ACL is applied to the VTY lines. The workaround is to use the following procedure when you apply an ACL to line vty 0 4 and line vty 5 Create the vty ACL and permit the network.

Append the vrf-also keyword to the configured access-class inbound. In a switch stack, the show interface command shows incorrect values for output drops. The workaround is to use the show platform port-asic stats drops command to see the correct values.

A static route that has the next hop set to null0 is removed when the master switch is changed in a switch stack configuration. This situation occurs when the switch is stacked and the static route is advertised by the network 0.

The workaround is to use the ip summary-address eigrp as-number ip-address mask command to set the IP summary aggregate address for the interface through which the next hop can be found. The Catalyst E series switch with Supervisor Engine 7L-E contains a denial of service DoS vulnerability when processing specially crafted packets that can cause a reload of the device.

When ports from each switch in a switch stack are bundled together to form an uplink port channel, Multicast VLAN Registration MVR streams are sent only to the switch with the active member in the port channel. When a device is moved from one port to another in a switch stack, the SNMP data generated for the move event is incorrect. Users connecting to the network through a device configured for web proxy authentication may experience a web authentication failure.

Using the dot1x default command on a port disables access control on the port and resets the values of the authentication host-mode and authentication timer reauthenticate commands to the default values. The workaround is to avoid using the dot1x default command and set various dot1x parameters individually. You can also reconfigure the parameters that were changed after you entered the dot1x default command. The workaround is to flap the ingress physical interface, the SVI, or the port channel.

In a switch stack setup after you reload a member switch, a multilayer switching MLS class of service CoS configuration command with a specified value such as mls qos cos 7 on the slave switch does not function anymore. This situation impacts untagged IP and Layer 2 packets. The workaround is to ensure that when you configure a service policy on an interface, an interface default level CoS is also configured. You can use mls trust qos cos command in interface configuration mode.

Frame check sequence FCS errors occur when the switch receives jumbo frames greater than bytes on downlink ports. When using the switchport port-security maximum 1 vlan access command, if an IP-phone with a personal computer connected to it is connected to an access port with port security, a security violation will occur on the interface. This type of message is displayed on the console:. The workaround is to remove the line switchport port-security maximum 1 vlan access.

The switch does not correctly detect a loopback when the switch port on an authenticated IP phone is looped to a port configured and authenticated with dot1x security, even when bpduguard is configured on the interface. This situation can result in percent CPU utilization and degraded switch performance.

The workaround is to configure the interface with the authentication open command or to configure authentication mac-move permit on the switch.

The workaround is to save the configuration and reload the switch. Alternatively, configure the switch by entering the no macro auto monitor command followed by the macro auto monitor command after the port is bundled for the first time.

The workaround for v2 stacks is to limit the setup to 5 switches. If more then 5 switches are required in a stack, keep the number of VLANs and enabled features as low as possible. On the downlink interfaces, the switches are capable of sourcing IEEE These documents provide complete information about the Catalyst , , , S and switches and the Cisco EtherSwitch service modules and are available at Cisco.

These documents provide complete information about the Catalyst switches and the Cisco EtherSwitch service modules:. These documents provide complete information about the Catalyst switches:. These documents provide complete information about the Catalyst and S switches and are available on Cisco.

For other information about related products, see these documents:. SFP compatibility matrix documents are available from this Cisco. Table 2 Catalyst Switches Supported Switch. Support Cisco FlexStack technology. Table 4 Other Supported Hardware Switch. We recommend 1 GHz. Internet Explorer 6. Cluster Compatibility You cannot create and manage switch clusters through the device manager. When creating a switch cluster or adding a switch to a cluster, follow these guidelines: When you create a switch cluster, we recommend configuring the highest-end switch in your cluster as the command switch.

If you are managing the cluster through Network Assistant, the switch with the latest software should be the command switch. The standby command switch must be the same type as the command switch. For example, if the command switch is a Catalyst switch, all standby command switches must be Catalyst switches. Deciding Which Files to Use The upgrade procedures in these release notes describe how to perform the upgrade by using a combined tar file.

To download software, follow these steps: Step 1 Use Table 6 to identify the file that you want to download. Step 2 Download the software image file: a. Navigate to your switch model. The bootloader can take up to 1 minute to upgrade the first time that the new software is loaded. Do not power cycle the switch during the bootloader upgrade. Switch ping tftp-server-address. Installation Notes Use these methods to assign IP information to your switch: The Express Setup program , as described in the switch getting started guide.

The CLI-based setup program, as described in the switch hardware installation guide. The DHCP-based autoconfiguration, as described in the switch software configuration guide. Manually assigning an IP address, as described in the switch software configuration guide. Option to configure a default class on Catalyst S switches by using the class class-default policy-map configuration command.

For more information, see the Configuring QoS chapter of the software configuration guide on Cisco. The all keyword is now removed from the timers throttle lsa global configuration command. The vstack startup-vlan command has been added. For more information, see the command reference on Cisco. The switch supports For more information, see the Configuring MACsec Encryption chapter in the software configuration guide.

LAN Base image for Catalyst C and S switches; IP Base image for Catalyst C switch Support for configuring static IPv6 routes in the routing table so that packet data can be sent to networks that are not directly connected to the router. For more information, see the Configuring Port-Based Traffic Control chapter in the software configuration guide.

Limitations and Restrictions You should review this section before you begin working with the switch. This problem occurs under these conditions: — When the switch is booted up without a configuration no config. CSCec Catalyst or switches and Cisco EtherSwitch service modules When you change a port from a nonrouted port to a routed port or the reverse, the applied auto-QoS setting is not changed or updated when you verify it by using the show running interface or show mls qos interface user EXEC commands.

These are the workarounds: 1. Disable auto-QoS on the interface. The problem is observed only when the switch is receiving frames. Any log entries that are still in the log buffer have not been output as a system message on a switch that fails are lost. CSCed When port security is enabled on an interface in restricted mode and the switchport block unicast interface command has been entered on that interface, MAC addresses are incorrectly forwarded when they should be blocked The workaround is to enter the no switchport block unicast interface configuration command on that specific interface.

The switch rejects a CLI command to change the baud rate. This does not affect switch functionality. CSCsj When you enter the boot host retry timeout global configuration command to specify the amount of time that the client should keep trying to download the configuration and you do not enter a timeout value, the default value is zero, which should mean that the client keeps trying indefinitely.

However, the client does not keep trying to download the configuration. CSCsk When the configuration file is removed from the switch and the switch is rebooted, port status for VLAN 1 and the management port Fast Ethernet 0 is sometimes reported as up and sometimes as down , resulting in conflicts. This status depends on when you respond to the reboot query: Would you like to enter the initial configuration dialog? CSCsl Catalyst and switches A T-start error message appears after startup under these conditions: — Two-link ports on the same switch are connected with a crossover cable.

CSCsz When authorization and accounting are enabled on the switch and you use the interface range command to change the configuration on a range of interfaces, the change might cause high CPU utilization and authentication failures. The device-sensor accounting global configuration command is not available on Catalyst series switches. Cisco EtherSwitch service modules When a Cisco EtherSwitch service module reloads or the internal link resets, there can be up to a second delay in providing power to PoE devices, depending on the configuration.

If the internal Gigabit Ethernet interface on a Cisco EtherSwitch service module connected to the router is configured as a switch port in access mode or in trunk mode, the internal link is not operational until it reaches the STP forwarding state. Therefore, the PoE that comes from the host router is also not available until the internal Gigabit Ethernet link reaches the STP forwarding state.

This is due to STP convergence time. This problem does not occur on routed ports. Traffic on EtherChannel ports is not perfectly load-balanced. Egress traffic on EtherChannel ports are distributed to member ports on load balance configuration and traffic characteristics like MAC or IP address. More than one traffic stream may map to same member ports based on hashing results calculated by the ASIC.