From: Chris Home (clarson52@comcast.net)
Date: Tue Mar 25 2003 - 23:23:06 GMT-3
I think one reason is so network management systems will correctly detect
status. For instance, I know on a trunk if you set it to on, it will show up
as on in net mgmt systems even if the trunk has failed. With desirable, if
one side of the trunk does not come up, the mgmt system will reflect that.
EtherChannel may be the same way.
----- Original Message -----
From: "Mike Williams" <ccie2be@swbell.net>
To: "'Gary Lileikis'" <glileikis@rogers.com>
Cc: "'Ccielab@Groupstudy.Com'" <ccielab@groupstudy.com>
Sent: Tuesday, March 25, 2003 5:37 PM
Subject: RE: How to configure a ethernet channel as trunk on3550?
> Gary,
>
> Not to be nitpicky, but why use 'desirable' instead of 'on' when doing
> the channel-group?
>
> I know that Cisco loves options, and they love to make things 'detect'
> other things, but I've always been a big fan of making things concrete
> when possible, so I would use the 'channel-group 1 mode on'. I mean,
> let's face it, either you want an etherchannel or you don't. I treat
> trunks the same way (as you did in your sample config) where I force
> both ends as far as encapsulation and mode. (I also for EVERY
> switchport that's NOT a trunk by using 'switchport mode access'.....
> Drives my co-workers crazy)
>
> Just curious.
>
> Mike W.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Gary Lileikis
> Sent: Tuesday, March 25, 2003 2:13 PM
> To: 'Fan Shan'
> Cc: Ccielab@Groupstudy.Com
> Subject: RE: How to configure a ethernet channel as trunk on3550?
>
>
> Fan,
> This should work:
>
>
> interface Port-channel1
> switchport trunk encapsulation dot1q
> switchport mode trunk
> no ip address
>
> interface FastEthernet0/22
> switchport trunk encapsulation dot1q
> switchport mode trunk
> no ip address
> channel-group 1 mode desirable
> !
> interface FastEthernet0/23
> switchport trunk encapsulation dot1q
> switchport mode trunk
> no ip address
> channel-group 1 mode desirable
>
>
> Regards,
> Gary Lileikis
>
>
>
>
>
> -----Original Message-----
> From: Fan Shan [mailto:shanf@public.jn.sd.cn]
> Sent: Tuesday, March 25, 2003 11:36 AM
> To: Ccielab@Groupstudy.Com
> Subject: How to configure a ethernet channel as trunk on3550?
>
>
> How to configure a two-port etherchannel ,and make it a trunk? pls in
> detail, thx
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