Cisco WS-X6708-10G-3CXL= - 10 Gigabit Ethernet Module Manual de usuario descargar pdf (Pagina 10)

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Determines which chassis will become the active virtual switch and which will become the standby virtual

switch chassis from a control-plane perspective.

4. High-availability role determination

After the role resolution, the active and standby image versions and configurations are checked for compatibility

helping make sure that the hardware and software versions are the same on both chassis supervisor engines. The

configuration check helps make sure that the VSL-related configurations on the two switches are compatible. If either

of the two checks fails, then the standby chassis comes up in route-processor redundancy (RPR), mode where all

modules are powered down, as opposed to Nonstop Forwarding/Stateful Switchover (NSF/SSO) mode, where the

standby chassis is fully initialized and can forward traffic.

An example of how configuration checking may force the system into RPR mode is provided in the following output:

*Jun 29 14:05:44.731: %VSLP-SW2_SP-5-RRP_ROLE_RESOLVED: Role resolved as ACTIVE by

VSLP

*Jun 29 14:05:44.735: %VSL-SW2_SP-5-VSL_CNTRL_LINK: vsl_new_control_link NEW VSL

Control Link 5/4

*Jun 29 14:05:44.735: %VSL-SW2_SP-2-VSL_STATUS: === VSL is UP

*Jun 29 14:08:22.294: %VS_PARSE-3-CONFIG_MISMATCH: The system:/running-config VSL

config comparison failed

Switch 2 has the following configs that mismatch with Switch 1:

Interface TenGigabitEthernet1/5/4 shutdown

*Jun 29 14:08:22.210: SW2_SP: VS_PARSE_DBG_ERR: vs_redun_send_check_vs_config:

icc_req_resp_timeout_and_success: Failed

*Jun 29 14:08:22.210: SW2_SP: VS_PARSE_DBG: vs_redun_check_vs_config: running config

check on rp not ok

*Jun 29 14:08:22.218: %PFREDUN-SW2_SP-6-ACTIVE: Standby initializing for RPR mode

This output shows that the configuration consistency check failed because of a mismatch in the VSL configuration

between switch 1 and switch 2. In this case, switch 2 has an extra “shutdown” statement under one of its VSL

members, whereas switch 1 does not, forcing the standby virtual switch (in this case switch 1) into RPR mode.

In order to recover from this situation, make any necessary changes to the configuration, save the configuration, and

reload the standby chassis:

vss#conf t

Enter configuration commands, one per line. End with CNTL/Z.

vss(config)#int te1/5/4

vss(config-if)#no shut

vss(config-if)#^Z

vss#wr

Building configuration...

*Jun 29 14:28:53.906: %SYS-5-CONFIG_I: Configured from console by console

*Jun 29 14:29:04.834: %PFINIT-SW2_SP-5-CONFIG_SYNC: Sync‟ing the startup configuration

to the standby Router. [OK]

vss#redundancy reload shelf 1

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Cisco WS-X6708-10G-3CXL= - 10 Gigabit Ethernet Module Manual de usuario Pagina 10