04-14-2008 09:23 AM - edited 03-03-2019 09:32 PM
I have this card installed in a 2821 router and the only configuration that has been entered is to set the card type at T3. Below is a show run output from the router. Can anyone tell/explain what this portion is related to the T3 card?
interface Tunnel3
no ip address
i can't find any reference on cisco's site. Below is the SH RUN output.
Any help is greatly appreciated.
Current configuration : 665 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
card type t3 1
!
no aaa new-model
!
!
ip cef
!
!
!
!
!
controller T3 1/0
!
!
!
interface Tunnel3
no ip address
!
interface GigabitEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface GigabitEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial1/0
no ip address
shutdown
dsu bandwidth 44210
!
ip forward-protocol nd
!
ip http server
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login
!
04-14-2008 10:13 AM
interface Serial 1/0 is where the Layer3 configuration will take place.
The match to that interface numbering was done with this command controller T3 1/0
The Tunnel3 can go, it has not value for now.
HTH,
__
Edison.
04-14-2008 11:32 AM
Thank you Edison, however, I understand all this. The question was, can anyone tell/explain what the Interface Tunnel3 is? There is no mention on Cisco site or documentation.
04-14-2008 11:41 AM
It's a logical interface that was created by someone. It's not default on any configuration.
Tunnel interfaces are created to carry traffic to/from another tunnel interface via public/untrusted networks.
HTH,
__
Edison.
04-14-2008 11:43 AM
beddo:
just to add to edison....
You run across GRE tunnel interfaces when working with VPN.
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