Redundancy - C2960G-24TC-L

Unanswered Question

Switch1 and switch2 are uplinked on port24 on both switches in a ISL-trunk

We want NIC1 from server1 into switch1 and nic2 from server1 into switch2.


The two interfaces on the server are bounded into one virtual and has a set ip address.

I wish to accomplish redundancy to make sure traffic runs smoothly even if one of the switches should die or fail in some way.

How should I configure my two Cisco-switches to accomplish this?

The way it is now, I get a lot of 'adressflapping' errors on the ciscos' like this:

(Oct 6 12:23:11: %SW_MATM-4-MACFLAP_NOTIF: Host 0022.1983.xxxx in vlan 10 is flapping between port Gi0/24 and port Gi0/2)


Cisco-2960G-24-tc-l Cisco-2960G-24-tc-l

Switch1 Switch2


Nic1 Nic2

Server1


Thanks,

Ole

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Edison Ortiz Tue, 10/07/2008 - 04:49
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When configuring teaming at the server side, both NICs must be connected to the same switch. Once connected to the same switch, you can configure etherchanneling in the switch.


http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_37_se/configuration/guide/swethchl.html


Having the server connecting to 2 different switches while the NICs are teamed, it's not a supported network configuration.


HTH,


__


Edison.

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