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Two Catalyst 4500 high Availability

Hi,

I´m trying to desing a high Availability topology with two 4500, in this moment the company a 4500R-E with a supervisor 6e, and we are considering a second switch 4500R+E with supervisor 7E, is possible to interconnect both switch in high Availability with GLBP? and if is possible how is the connection between both supervisors?

Regards,

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Hall of Fame Super Gold

Two Catalyst 4500 high Availability

I´m trying to desing a high Availability topology with two 4500, in this moment the company a 4500R-E with a supervisor 6e, and we are considering a second switch 4500R+E with supervisor 7E, is possible to interconnect both switch in high Availability with GLBP?

Hmmm ... Not easy.

Had your statement be that you currently have 4500R+E with Sup7E and you want to add another 4500R+E with Sup7E then my answer would be "It's possible".

Sup7E will have VSS feature sometime end of this year to mid-next year.  VSS will NOT be supported on the Sup6E.

Super Bronze

Two Catalyst 4500 high Availability

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Posting

GLBP I believe is supported on 4500 L3 sups.

How to interconnect them depends on what you're trying to accomplish.  Since you want to use GLBP, you'll need an uplink to both 4500s from an edge switch.  There are several ways to provide redundancy.

If you intend to span VLAN beyond a single edge switch, you'll want to sync your ARP and MAC-table timers to avoid unicast flooding.

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