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Bonding two t-1'S from cisco 7200 to cisco 2600

Ok. This problem has plagued me for the last 3 weeks or so. I have a cisco 7200 routing a channelized DS3. I have two ptp t1's coming back to a cisco 2600 with two WIC cards. Here is my problem. I believe something is wrong with either the multi-link or overload, because they do not balance. When I terminate the T1's seperately, they work perfectly. When I bond them, all the bandwidth is taken by the first person to access it. It then kill the line if anybody jumps onto it. I tried only passing publics, I then tried nating publics to privates, and yet nothing seems to solve my problem. I will show you the configs to see if anybody sees a problem.

this is the TEC config
ip subnet-zero
!
!
ip name-server 63.123.133.21
ip name-server 66.151.174.70
!
!
!
interface Multilink1
 description 7204-DS3
 ip address 66.179.108.102 255.255.255.252
 ip nat outside
 ppp multilink max-links 2
 multilink-group 1
!
interface Ethernet0/0
 ip address 66.179.108.1 255.255.255.192
 ip address 172.1.255.1 255.255.255.0
 ip address 172.1.254.1 255.255.255.0
 ip nat inside
 full-duplex
 no cdp enable
!
interface Serial0/0
 description Multilink-to-DS3
 no ip address
 encapsulation ppp
 no ip mroute-cache
 no fair-queue
 no cdp enable
 full-duplex
 ppp multilink
 multilink-group 1
!
interface Serial0/1
 description Multilink-to-DS3
 no ip address
 encapsulation ppp
 no ip mroute-cache
 no fair-queue
 no cdp enable
 full-duplex
 ppp multilink

Here is the DS3 7200 config


!
ip subnet-zero
ip cef
!
!
ip name-server 63.123.133.21
ip name-server 209.245.92.22
!
call rsvp-sync
!
!
!
!
!
!
controller T3 3/0
 t1 1 timeslots 1-24
 t1 1 clock source Line
 t1 2 timeslots 1-24
 t1 2 clock source Line
 t1 3 timeslots 1-24
 t1 3 clock source Line
 t1 10 timeslots 1-24
 t1 11 timeslots 1-24
 t1 11 clock source Line
 t1 12 timeslots 1-24
!
!
!
interface Multilink1
 description TECBLDG
 ip address 66.179.108.101 255.255.255.252
 ppp multilink
 multilink-group 1
!
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
interface Ethernet2/0
 ip address 216.183.119.70 255.255.255.240
 duplex full
!
interface Ethernet2/1
 no ip address
 shutdown
 duplex half
!
interface Ethernet2/2
 no ip address
 shutdown
 duplex half
!
interface Ethernet2/3
 no ip address
 shutdown
 duplex half
!
interface Serial3/0:1
 ip address 66.179.31.229 255.255.255.252
!
interface Serial3/0:2
 ip address 66.179.117.129 255.255.255.252
!
interface Serial3/0:3
 ip address 66.179.108.97 255.255.255.252
!
interface Serial3/0:10
 ip address 66.179.117.141 255.255.255.252
!
interface Serial3/0:11
 description Multilink-to-TEC
 no ip address
 encapsulation ppp
 ppp multilink
 multilink-group 1
!
interface Serial3/0:12
 description Multilink-to-TEC
 no ip address
 encapsulation ppp
 ppp multilink
 multilink-group 1
!
ip classless
ip route 0.0.0.0 0.0.0.0 216.183.119.68
ip route 66.179.108.0 255.255.255.192 66.179.108.102
ip route 66.179.117.192 255.255.255.248 66.179.117.130
ip route 66.179.117.248 255.255.255.248 66.179.117.142
ip route 66.179.118.0 255.255.255.192 66.179.108.98
no ip http server
!
!
dial-peer cor custom
!


any help on this would be greatly appreciated, its critical I get this finished ASAP. I have tried many different ways of using hte overload and the multi-link with no luck. I was wondering if im missing anything.
0
cmquickfix
Asked:
cmquickfix
1 Solution
 
lrmooreCommented:
On TEC

interface Serial0/0
  multilink-group 1
!
interface Serial0/1
   <<=== multilink-group 1 is missing ? ?


 t1 11 timeslots 1-24
 t1 11 clock source Line
 t1 12 timeslots 1-24
   <<== Where is the clock source?

If these are point-to-point T1's, where is the clock source? 2600 is clocking from line by default, 7200 is clocking from line also. Suggest that the 7200 be the clocking source and set these 2xT1's to clock source internal on 7200

Can you post result of "show interface" on the 2600 ?
0
 
noctotCommented:
  I'm not sure I agree with the recommendation of using the 7200 as the clock source. Cisco TAC has advised me that the 7200s have discrete clocking for every T1 on a channelized DS3. With this same set up they recommended I have the 2800 do the clocking as it only has one source even for multiple WICs. Admittedly you can't always trust Cisco TAC. A better way would be to set everything to line and make sure your telco provider is supplying clocking from a single source. That is most likely the case for two T1s served to the same location.
0

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