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etherchannel question

aueddonlineaueddonline Member Posts: 611 ■■□□□□□□□□
in CCNP
I have two 3550 with 2 gigsatck gigastack connections modules connecting them which use firewaire at 1Gig

Can I use etherchannel?

2C-3550#show etherchannel 1 sum
Flags: D - down P - in port-channel
I - stand-alone s - suspended
R - Layer3 S - Layer2
u - unsuitable for bundling
U - port-channel in use
Group Port-channel Ports
+
+
1 Po1(SD) Gi0/1(u) Gi0/2(u)


you see the 'u' flag does that mean the interface can't be used this way ?
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    APAAPA Member Posts: 959
    Giga-stack modules cannot be used for channelling purposes... :)
    CCNA | CCNA:Security | CCNP | CCIP
    JNCIA:JUNOS | JNCIA:EX | JNCIS:ENT | JNCIS:SEC
    JNCIS:SP | JNCIP:SP
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    aueddonlineaueddonline Member Posts: 611 ■■□□□□□□□□
    A.P.A wrote:
    Giga-stack modules cannot be used for channelling purposes... :)

    cheers for confirming that did have me wondering
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