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SZ1111
Beginner

C1111 - Port-channel

Hi everyone,

 

I just got a hold of a new C1111 router, and I was just wondering is there a particular reason that you can only put routed interfaces (Gi0/0/0 and Gi0/0/1) as members of port-channel or am I doing something wrong here ??? If that's the only option, I guess the idea behind this is just to create redundancy or increase bandwidth on an UPLINK. I would like to create port-channel towards my LAN network, but there is no option to put channel-group command on switched interfaces (Gi0/1/0 - Gi0/1/3).

 

Thanks you for your response

3 REPLIES 3
Giuseppe Larosa
Hall of Fame Master

Hello @SZ1111 ,

I think it is a device limitation caused mainly by its performance it can not support to have multiple gigabit of traffic going through it.

It is an edge device.

 

Hope to help

Giuseppe

 

Hi Guiseppe

I think that you might be right and that might indeed be the reason, however that said, Port-channels are used for other things than just increasing traffic flow.

I think its a sad thing that Cisco does not recognize the value of this feature for the edge routers.

 

The Cisco 1111-4p has 2 Routing ports and a 4 port switch.

That means I can get several different options for redundancies on the external interfaces.

I would love to have the possibility to connect a Port-channel to a switch/switch stack/VPC/2nd router to get link redundancy on the inside too. (Yes spanning tree is one option, but not the one i prefer!)

 

The most irritating part is that the command is half there, you can do the port-channel command but you can not add the number.

The ISR4221 has the identical problem when you add a 4 port switch module to it.

 

If anyone at Cisco is seeing this please consider adding this properly to the switch modules, it would help a lot with fault tolerance designs.

 

Best Regards

Torbjorn

I have solved this limitation by moving UPLINKS to switched ports, and used routed ports (where i can create Port-channel) towards the LAN network where I have stacked switches.