From: Weidong Xiao (Weidong.Xiao@vi.net)
Date: Wed Jan 14 2004 - 09:21:11 GMT-3
Thank you Daniel.
I was and am pretty sure that the channel group number is only local significant. Before my post, I checked the command and config guide again. But the part that you quoted does not nessaryly mean the number is local signicante.
Actually I configed a port-channel between two 6500 and used different channel-group number (typo!!!!, in production), and it worked fine. There days later eigrp neighbor between 2 6500s began flapping. After changed to same channel-group number, the problem disappeared.
So I'm still not 100% sure that channel group number is only locally significant.
Cheers,
Weidong
> -----Original Message-----
> From: Daniel Sheedy [mailto:dansheedy@gmx.net]
> Sent: 14 January 2004 11:38
> To: ccielab@groupstudy.com
> Cc: Weidong Xiao
> Subject: Re: channel group number's significancy domain
>
>
> Hi Weidong,
>
> If you look at this link below, you will see a paragraph a
> little further
> down:
>
> http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/1211
> 9ea1/3550cr/cli1.htm#1860162
>
> "Any configuration or attribute changes you make to the port-channel
> interface are propagated to all interfaces within the same
> channel group as
> the port channel (for example, configuration changes are also
> propagated to
> the physical interfaces that are not part of the port
> channel, but are part
> of the channel group)."
>
> So, the number is locally significant, to group together
> interfaces that on
> the same switch.
>
> Dan Sheedy
>
> ----- Original Message -----
> From: "Weidong Xiao" <Weidong.Xiao@vi.net>
> To: <ccielab@groupstudy.com>
> Sent: Wednesday, January 14, 2004 12:23 PM
> Subject: channel group number's significancy domain
>
>
> > Hi,
> >
> > If I config layer 2 channel-groups between 2 switches,
> using different
> channel group numbers between them (sw1 use 10 and sw2 use
> 11, like below),
> will the channel work?
> >
> > The question can be express as: is the channel group number only
> significant on the switch or between switches?
> >
> > Thanks in advance,
> > Weidong
> >
> >
> > --------------------------------------
> > SW1:
> > interface GigabitEthernet0/1
> > switchport
> > switchport trunk encapsulation isl
> > switchport mode trunk
> > channel-group 11 mode on
> > !
> > interface GigabitEthernet0/2
> > switchport
> > switchport trunk encapsulation isl
> > switchport mode trunk
> > channel-group 11 mode on
> > ---------------------------------------
> > SW2:
> > interface GigabitEthernet0/1
> > switchport
> > switchport trunk encapsulation isl
> > switchport mode trunk
> > channel-group 10 mode on
> > !
> > interface GigabitEthernet0/2
> > switchport
> > switchport trunk encapsulation isl
> > switchport mode trunk
> > channel-group 10 mode on
> >
> >
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