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2911 sub-int config

Network Support
Level 1
Level 1
I'd just like to get a proof-read from you techies... make sure I haven't missed anything before I send out this router.

FYI, I'm shipping this router to a branch that currently has a 2811ISR in place... connected to our MPLS wan. It currently has three interfaces: G0/0 to the MPLS; G0/1 to one departments vlan; G0/2 to another department.

The 2911 is being deployed as part of our IPT pilot... they're the first zone being used to test and tweak on-net calls to HO.

The plan is to take the same three interfaces on the 2911: G0/0 to MPLS; G0/1.1 gateway to department 1; G0/1.2 gateway to the other department; G0/2 for the voice gateway.

The inside switch is a stack of POE 3750's.

Here's the sub-int config:

int G0/1
no ip address
duplex auto
speed auto
!
int G0/1.1
description *** TCI - Data 10.22.178.0 ***
encapsulation dot1Q 178
ip address 10.22.178.1 255.255.255.0
!
int G0/1.2
description *** TFS - Data 10.17.82.0 ***
encapsulation dot1Q 17
ip address 10.17.82.1 255.255.255.0
!

Assuming the port on the switch side is configured as a trunk carrying vlans 17 and 178... am I good to go?  Also, I don't recall, from past sub-int configs, having to add an encapsulation command.  If it was omitted, would the sub-int config still work?

Thanks,
Mike
2 Replies 2

paolo bevilacqua
Hall of Fame
Hall of Fame

It would not work.

But the config as is works?