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ISR 4351 (onboard LAN/WAN ports x 3); 802.1q trunk capability

Michael Gioia
Level 1
Level 1

www.cisco.com/c/en/us/products/collateral/routers/4000-series-integrated-services-routers-isr/datasheet-c78-732542.html

The ISR 4351 has 3 x onboard LAN/WAN ports.

I presume these ports can be turned into standard switchports (i.e. if I want them in access or trunk mode) ?

I have a need for 2 of these 3 x ports to connect to independent switch stacks and terminate vlans from both.

Both switch stacks have a trunk between each other.

But then I need to terminate their L3 up to a router.  And both have a connection up to the router.

So, I want to turn each of the 2 x ports into trunk ports, and terminate the L3 with interface vlan's (SVIs) on the router. 

(As opposed to doing sub-interface's..)

And then STP on the router will cater for my redundancy between the two stacks. (each stack is carrying the same vlans)... yet I don't see any support for any spanning tree protocols in the datasheet..

Am I going about this the wrong way ?

2 Replies 2

Michael Gioia
Level 1
Level 1

I.e. Something like this,

I think the only way to get what I need done on an 4000 ISR series is to use a NIM-ES2, no ?

http://www.cisco.com/c/en/us/products/collateral/routers/3900-series-integrated-services-routers-isr/data_sheet_c78-612808.html