Re: Etherchannel problem...

Just labbed it, all worked well in my lab. I tried it with LACP and PAGP.

Although ... when would you have an access link to another switch? Maybe I
am not thinking outside the box enough ... ;-)

I was able to recreate your issue (temporarily) when I had configured only
one side for access mode and not the other. After I sync'ed the configs, I
then did a shut and no shut and all worked fine after wards.

Can you default the interfaces and then try the configs again? Normally
when etherchannel fails there is something in the logging messages to
indicate what the problem currently is ...

HTH,

Andrew Lee LIssitz

On Mon, Sep 21, 2009 at 9:25 AM, Naufal Jamal <naufalccie_at_yahoo.in> wrote:

> Hi,
>
> SW1 and SW3 are connected through fa0/19 and fa0/20
> the config on fa0/19 and fa0/20:
> interface FastEthernet0/19
> switchport access vlan 13
> switchport mode access
> channel-group 1 mode active
> end
> SW1(config-if)#do sh run int fa0/20
> Building configuration...
> Current configuration : 114 bytes
> !
> interface FastEthernet0/20
> switchport access vlan 13
> switchport mode access
> channel-group 1 mode active
> end
> SW1(config-if)#do sh ether sum
> Flags: D - down P - 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
> 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(SD) LACP Fa0/19(I) Fa0/20(I)
>
> SW3
> SW3(config-if)#do sh ether sum
> Flags: D - down P - 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
> 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 Fa0/19(w) Fa0/20(w)
> SW3(config-if)#do sh run int fa0/19
> Building configuration...
> Current configuration : 115 bytes
> !
> interface FastEthernet0/19
> switchport access vlan 13
> switchport mode access
> channel-group 1 mode passive
> end
> SW3(config-if)#do sh run int fa0/20
> Building configuration...
> Current configuration : 115 bytes
> !
> interface FastEthernet0/20
> switchport access vlan 13
> switchport mode access
> channel-group 1 mode passive
> end
> The etherchannl is not comin up.
> i first shut down the inter face and did the config and did no shut.no joy
> changed the port-channel number.no joy
> did default interface on both the routers and started from scratch.no joy.
> Any idea how to nail this?
> Nuafal
>
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-- 
Andrew Lee Lissitz
all.from.nj_at_gmail.com
Blogs and organic groups at http://www.ccie.net