network cisco ccna gns3 certification arteq

network cisco ccna gns3 certification arteq
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Sunday, January 29, 2012

mode bouncing...

i've been switching between negotiation modes in channel groups...
some things...

setting the channel group mode to on results in default etherchannel; no negotiation, similar to trunk mode on...
switching around protocols doesn't have to be performed with channel-priority, it can be done simply by choosing the channel group mode:

sw2950_01(config-if-range)#channel-group 6 mode ?
  active     Enable LACP unconditionally
  auto       Enable PAgP only if a PAgP device is detected
  desirable  Enable PAgP unconditionally
  on         Enable Etherchannel only
  passive    Enable LACP only if a LACP device is detected

when the interfaces go into errdisable, shut and no shut needs to be performed on the poX to bring the aggregated port back...

sw2950_01#sh etherch summ
Flags:  D - down        P - in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        u - unsuitable for bundling
        U - in use      f - failed to allocate aggregator
        d - default port

Number of channel-groups in use: 2
Number of aggregators:           2

Group  Port-channel  Protocol    Ports

1      Po1(SU)         LACP      Fa0/5(Pd)   Fa0/6(P)
2      Po2(SU)         LACP      Fa0/7(Pd)   Fa0/8(P)

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