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second switch in VSS

Mary
Level 1
Level 1

my vss switch ip is 192.168.0.2, when i ssh it, it display host name abc1, I understand vss needs two switches, so how would i know the hostname of my second switch?

my next question is in switch domain, the configuration is as follows:

switch mode virtual

switch 1 prio 110

switch 2 prio 100

but everytime i ssh ip address, the local switch is 2, why it always take the standby switch instead of active switch?

1 Accepted Solution

Accepted Solutions

Diana Karolina Rojas
Cisco Employee
Cisco Employee

With VSS you only have one active supervisor, so you can't see the other switch. About your second question you have to take in account this:

If you boot both chassis simultaneously, the VSL ports become VSS active, and the chassis will come up as VSS active and VSS standby. If priority is configured, the higher priority switch becomes active.

If you boot up only one chassis, the VSL ports remain inactive, and the chassis comes up as VSS active. When you subsequently boot up the other chassis, the VSL links become active, and the new chassis comes up as VSS standby.

Regards,

View solution in original post

3 Replies 3

Joseph W. Doherty
Hall of Fame
Hall of Fame

With VSS there's only one logical switch.  (With Nexus, and VPC, you still "see" two switches.)

You configure interfaces on the two switches, prefixing interface with switch number (1 or 2).

Diana Karolina Rojas
Cisco Employee
Cisco Employee

With VSS you only have one active supervisor, so you can't see the other switch. About your second question you have to take in account this:

If you boot both chassis simultaneously, the VSL ports become VSS active, and the chassis will come up as VSS active and VSS standby. If priority is configured, the higher priority switch becomes active.

If you boot up only one chassis, the VSL ports remain inactive, and the chassis comes up as VSS active. When you subsequently boot up the other chassis, the VSL links become active, and the new chassis comes up as VSS standby.

Regards,

With VSS you only have one active supervisor, so you can't see the other switch.

Actually, to clarify, the standby VSS member's supervisor is active, again, the VSS pair becomes one logical device.

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