4500 and hsrp

I plan to get 2 48-ports line card for a 4507. Can I run HSRP between those 2 cards so they can back each other up? Thanks
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leblancAccountingAsked:
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Henk van AchterbergSr. Technical ConsultantCommented:
HSRP is for routing failover, I think you need failover on layer 2 correct?

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/46sg/configuration/guide/swflink.html <-- flex links
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leblancAccountingAuthor Commented:
I just realized that you cannot implement hsrp in 1 chassis for the 4507.
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giltjrCommented:
pitachip, you are correct.  You can't do HSRP in a single chassis.

However, you can create a VLAN, assign an IP address to the VLAN interface and then put one port on each card in that VLAN.   If either card or either port fails, the VLAN interface will still be reachable.

In fact, you can assign a port in that VLAN on any/all line cards you have.
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leblancAccountingAuthor Commented:
So you are relying on spanning tree as your redundancy then. I was thinking implementing etherchannel.
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giltjrCommented:
Etherchannel only works if all port in the port group are connected to the same switch.

If you are connecting to different switches you can't do Etherchannel.  Unless the switches you are connecting to support "stacking/virtual port channels."

That is if your 4507 has two ports connected to "SWITICH#01", then you can do Etherchannel.

However if your 4507 has port#1 connected to "SWITCH#01" and port#2 to "SWITCH#02", then SWITCH#01 then you canNOT do Etherchannel, unless SWITCH#01 and SWITCH#02 support stacking/virtual port channel.
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leblancAccountingAuthor Commented:
Yes. I will have my access switch1 connected to port1 on card1 and port1 on card2 of the 4507.
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giltjrCommented:
Then you can do Etherchannel.  This will provide redundancy in case of a link or card failure and increased bandwidth.
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