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Wan Interface Question

tcboydston
Level 1
Level 1

I am trying to change out our internet router from a 3640 to a 3845. When I recieved the router it was equipped with 4 VWIC-1MFT-T1 controller t1 interfaces. What I have in the 3640 are 4 WIC-DSU-T1 interfaces. I was told that the two are compatible and are configured the same. But when trying to configure them I am finding out that they seem to be totally different.

Am I missing something?

Here is a copy of the config in the 3640 with the WIC-DSU-T1 that I am just trying to duplicate.

interface Multilink1

description -=TWTC Circuit Bundle 58/HCGS/100411/TWCS A/B/C/D=-

ip address

no cdp enable

ppp multilink

multilink-group 1

!

interface Serial0/0

description -=TWTC Circuit 58/HCGS/100411/TWCS/A=-

bandwidth 1536

no ip address

encapsulation ppp

no ip route-cache

no ip mroute-cache

no fair-queue

service-module t1 timeslots 1-24

no cdp enable

ppp multilink

multilink-group 1

!

interface Serial0/1

description -=TWTC Circuit 58/HCGS/100411/TWCS/B=-

bandwidth 1536

no ip address

encapsulation ppp

no ip route-cache

no ip mroute-cache

no fair-queue

service-module t1 timeslots 1-24

no cdp enable

ppp multilink

multilink-group 1

!

interface Serial1/0

description -=TWTC Circuit 58/HCGS/100411/TWCS/C=-

no ip address

encapsulation ppp

no cdp enable

ppp multilink

multilink-group 1

interface Serial1/0

description -=TWTC Circuit 58/HCGS/100411/TWCS/C=-

no ip address

encapsulation ppp

no cdp enable

ppp multilink

multilink-group 1

Thanks for your help

Tom

2 Replies 2

thisisshanky
Level 11
Level 11

VWICs appear as controllers unlike WIC-1DSU-T1s. With your four vwics, you will see a similar output.

Controller 1/0

Controller 1/1

Controller 2/0

Controller 2/1

A sample controller config should look like this

controller 1/0

no shut

framing esf

linecode b8zs

clock source line

channel-group 1 timeslots 1-24 speed 64

int s1/0:1

bandwidth 1536

description <>

encap ppp

ppp multilink

multilink group 1

Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus

Thank you for the help.

I did get to work. I think I programmed in the controller ds0-group timeslots rather than channel-group time slots.

Every thing seems to be ok

Thanks again

Tom

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