11-01-2012 06:04 AM - edited 03-04-2019 06:01 PM
I seem to be having an issue getting a 3xT1 bonded solution to work. I can get 2 out of the 3 T1s to come up and pass traffic, but I can not get the third one to be added to the solution.
Hardware: 2851
IOS: c2800nm-advipservicesk9-mz.124-15.T8.bin
Modules:
NAME: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 0", DESCR: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC2-2MFT-T1/E1 , VID: V01 ,
(This is the card that is running the 2 T1s bonded fine.)
NAME: "WAN Interface Card - DSU/CSU T1 Fractional (V2) on Slot 0 SubSlot 1", DESCR: "WAN Interface Card - DSU/CSU T1 Fractional (V2)"
PID: WIC-1DSU-T1-V2 , VID: 1.0,
(This is the card the single T1 comes into that needs to be bonded with the other 2 with a MLPPP configuration)
NAME: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 2", DESCR: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC2-2MFT-T1/E1 , VID: V01 ,
(This card is running 2 PRIs.)
Configuration:
controller T1 0/0/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 0/0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 0/1/0 (this command fails to run)
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
interface Multilink1
description MLPPP connection
ip address x.x.x.x x.x.x.x
bandwidth 4608
no ip redirects
no ip unreachables
no peer neighbor-route
no cdp enable
ppp multilink
ppp multilink group 1
service-policy output xxxxxxxx
!
interface Serial0/0/0:0
description
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
!
interface Serial0/0/1:0
description
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
!
interface Serial0/1/0
description
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
!
As stated above the S0/0/0:0 and S0/0/1:0 bonded T1s are working as intened and are showing both Layer 1 is up and line protocol up.
S0/1/0 is showing as up but line protocol down.
Any ideas? Can I not use a WIC-1DSU-T1-V2 in a MLPPP configuration?
Solved! Go to Solution.
11-01-2012 06:21 AM
Sounds like a carrier issue, verify with the carrier the correct framing/linecode are in use and the third circuit is running smoothly. Config looks good.
Even though the Interface is up/down and won't join the multilink, another useful command is show ppp multilink gives you a quick look at which interfaces are joined to the multilink, just for future troubleshooting.
--
CCNP, CCIP, CCDP, CCNA: Security/Wireless
Blog: http://ccie-or-null.net/
11-01-2012 06:21 AM
Sounds like a carrier issue, verify with the carrier the correct framing/linecode are in use and the third circuit is running smoothly. Config looks good.
Even though the Interface is up/down and won't join the multilink, another useful command is show ppp multilink gives you a quick look at which interfaces are joined to the multilink, just for future troubleshooting.
--
CCNP, CCIP, CCDP, CCNA: Security/Wireless
Blog: http://ccie-or-null.net/
11-01-2012 06:24 AM
Thank you that is a very useful command.
Turns out that the cable going into s0/1/0 is a old PRI, which the teleco ran incorrectly. So that would explain my issue.
None the less does the configuration look ok? I can not run the controller T1 0/1/0 command. Is that normal for the type of module/card?
11-01-2012 06:33 AM
The WIC-1DSU-T1-V2 is different hardware and doesn't utilize the controller command it's rolled into the interface.
--
CCNP, CCIP, CCDP, CCNA: Security/Wireless
Blog: http://ccie-or-null.net/
11-01-2012 06:39 AM
Thank you once again.
I figured as much I just wanted to make sure,
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: