router on a stick

Answered Question
Apr 25th, 2009

I have an isr 2851 and need to support multiple vlans on g0/0, I'm connecting to a layer 2 switch. Is a router on a stick my only option? Do the isr's support a trunk command, similar to the "switchport mode trunk" found on cat switches?

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Correct Answer by Jon Marshall about 7 years 7 months ago

"I'm connecting to a layer 2 switch. Is a router on a stick my only option"

Unless you have an etherswitch module in the 2851 then yes that is pretty much your only option.

"Do the isr's support a trunk command, similar to the "switchport mode trunk" found on cat switches?"

Again with etherswitch modules this command is available but not if you are just using one of the inbuilt gigabit ethernet interfaces.

Jon

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Correct Answer
Jon Marshall Sat, 04/25/2009 - 08:22

"I'm connecting to a layer 2 switch. Is a router on a stick my only option"

Unless you have an etherswitch module in the 2851 then yes that is pretty much your only option.

"Do the isr's support a trunk command, similar to the "switchport mode trunk" found on cat switches?"

Again with etherswitch modules this command is available but not if you are just using one of the inbuilt gigabit ethernet interfaces.

Jon

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