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Gig 1/1 interface on a standby Sup 2 card active?

Hi,

My 2 6513s each have 2 Sup 2 cards in them. The slot 1 Sup card in both 6513s is the active one and Gi1/1 on each connects the 2 6513s together.

Tonight I want to pull the active Sup 2 card from the secondary 6513. If I move the cable in the secondary 6513 from Gi1/1 to Gi2/1, will I still have connectivity between the 2 6513s?

In other words, are the interfaces on the standby Sup 2 card available for use when the card is in standby mode or does it only work when it becomes active?

The configuration of ports 1/1 and 2/1 of the 2nd 6513 are below.

Also, is there a document that delineates how these 2 Sup cards on these 2 6513s should be configured for highest availability (ie. Sup card failure on either 6513)? I looked high and low on Cisco's Web site but could not find one.

Thanks, Ian.

interface GigabitEthernet1/1

description Link to COBCore1

switchport

switchport trunk encapsulation dot1q

switchport trunk native vlan 99

switchport trunk allowed vlan 80,99,100,110,111,113,120-123,130,131,133,140

switchport trunk allowed vlan add 141,153,155,165,181-186,189,200,210,212,231

switchport trunk allowed vlan add 500

switchport mode trunk

spanning-tree link-type point-to-point

!

interface GigabitEthernet1/2

no ip address

shutdown

!

interface GigabitEthernet2/1

description Link to COBCore1

switchport

switchport trunk encapsulation dot1q

switchport trunk native vlan 99

switchport trunk allowed vlan 80,99,100,110,111,113,120-123,130,131,133,140

switchport trunk allowed vlan add 141,153,155,165,181-186,189,200,210,212,231

switchport trunk allowed vlan add 500

switchport mode trunk

spanning-tree link-type point-to-point

2 REPLIES
Blue

Re: Gig 1/1 interface on a standby Sup 2 card active?

the GB interfaces on the standby 6500 supervisor are active, even if the sup is in standby mode.

configure your switch to use the 1/2 GB interface and make the link connection. verify the link is up and you can pass traffic.

then you can adjust your 1/1 interface without causing downtime.

(if you create an etherchannel of the two, this will allow you to remove 1/1 and not lose any connectivity)

for high availability, i use the practice of:

switch1-sup1 gb 1/1 >> switch2-sup2 gb 1/1

switch1-sup1 gb 1/2 >> switch2-sup1 gb 1/2

switch1-sup2 gb 1/1 >> switch2-sup1 gb 1/1

switch1-sup2 gb 1/2 >> switch2-sup2 gb 1/2

this allows for a fully meshed configuration for highest available redundancy.

New Member

Re: Gig 1/1 interface on a standby Sup 2 card active?

Thanks for your reply. It's just the information I was looking for. I performed the Sup 2 DRAM memory upgrades on the Sup 2 blades and it went just fine.

Thanks again for your helpful reply, Ian.

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