Friday, October 17, 2014

Cisco 2960: How To Configure A Port-Channel For LACP

I had this need when I replaced a core not long ago.  I ended up needing dual fiber back to redundant cores and LACP was being used.  Here is how I did in on the access switches, which were Cisco 2960Gs.

int port-ch 1
switch mode trunk
int gig 1/0/49
channel-gr 1 mode active
int gig 1/0/50
channel-gr 1 mode active
wr mem

Now, lets check to make sure it looks good:
2960S-POE-48#sh etherchannel 1 sum
Flags:  D - down        P - bundled in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      f - failed to allocate aggregator

        M - not in use, minimum links not met
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port

Number of channel-groups in use: 1
Number of aggregators:           1

Group  Port-channel  Protocol    Ports
1      Po1(SU)         LACP      Gi1/0/49(P) Gi1/0/50(P)


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