ISR 3945 switchport

[peter.brooks]

Hi folks,

Is it possible to configure 3945 in-built Gigethernet ports 0/0, 0/1, 0/3 as switch-ports ?

[Aaron Harrison]

Hi

Not full featured switchports as such, but you can set them up as bridged ports.

Aaron

[peter.brooks]

Thansk Aaron, so are 'switchport' commands possible on these ports ?

e.g. 

!
interface GigabitEthernet0/0
 switchport access vlan 300
 switchport mode access
 speed auto
 duplex full
 no shutdown
!

[Richard Burts · Accepted solution]

No you can not use the switchport command on these interfaces. These interfaces are designed to be layer 3 interfaces and as such do not support the switchport command. As Aaron has suggested if you want layer 2 operation on these interfaces you can put them into a bridge group. But you can not use the switchport command on them.

HTH

Rick 

[peter.brooks]

Thanks both Aaron and Richard for your info.

Cheers/ 

[Aaron Harrison · Accepted solution]

No problem...

Please remember to rate replies and mark questions as 'answered' to highlight useful content...

Aaron

[Oleg Volkov]

Hello!
I have 3925 and I was aggregate two interfaces to one Port-Channel.
And use subinterfaces on it
Theoretically, it is interfaces working like switchports, now

interface GigabitEthernet0/1
 description N5K-1
 no ip address
 load-interval 30
 duplex auto
 speed auto
 media-type rj45
 channel-group 6
end

interface GigabitEthernet0/2
 description N5K-2
 no ip address
 load-interval 30
 duplex auto
 speed auto
 media-type rj45
 channel-group 6
end

interface Port-channel6.3
.....
!
interface Port-channel6.52
.....
!
interface Port-channel6.69
.....
!
interface Port-channel6.70
.....
!

And more.

What You want to do?

[Richard Burts]

The ability to put two interfaces that are naturally layer 3 interfaces into an Etherchannel and have them both operational and carrying traffic is very interesting. But it does not provide what I believe the original poster was looking for which is the ability to use switchport commands on the physical interfaces of the ISR G2 router.

HTH

Rick