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,
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