Problem with 2851 config

[blubomber]

I have a Cisco 2851. i also have a VWIC-2MFT-T1 card in stalled. Here is the running-config;


Current configuration : 2769 bytes
!
! Last configuration change at 09:56:35 PCTime Fri Sep 23 2005 by sandsregent
! NVRAM config last updated at 09:58:30 PCTime Fri Sep 23 2005 by sandsregent
!
version 12.3
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname company
!
boot-start-marker
boot-end-marker
!
security authentication failure rate 3 log
security passwords min-length 6
logging buffered 51200 debugging
logging console critical
enable secret 5 $1$pVqH$0Mi4S6UWlisioAn.a5Yvj.
!
clock timezone PCTime -8
clock summer-time PCTime date Apr 6 2003 2:00 Oct 26 2003 2:00
no network-clock-participate wic 3
no network-clock-participate aim 0
no network-clock-participate aim 1
no aaa new-model
ip subnet-zero
no ip source-route
ip tcp synwait-time 10
!
!
ip cef
!
!
no ip bootp server
ip domain name mydomain.com
ip name-server 192.168.67.15
ip name-server 192.168.100.2
no ftp-server write-enable
!
username user privilege 15 secret 5 $1$Uhho$qbNdzQvVyMorytpgfgyQE1
!
!
controller T1 0/3/0
framing esf
linecode b8zs
cablelength short 133
channel-group 0 timeslots 1-24 speed 56
description $branch1$
!
controller T1 0/3/1
framing esf
linecode b8zs
cablelength short 133
channel-group 1 timeslots 1-24 speed 56
description $branch2$
!
!
interface GigabitEthernet0/0
description $privateLAN$
ip address 192.168.100.254 255.255.0.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
duplex auto
speed auto
no mop enabled
!
interface GigabitEthernet0/1
description $Internet$
ip address 172.16.10.5 255.255.255.252
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
duplex auto
speed auto
no mop enabled
!
interface Serial0/3/0:0
description $branch1$
ip address 172.16.10.1 255.255.255.252
encapsulation ppp
!
interface Serial0/3/1:1
description $branch2$
ip address 172.16.11.1 255.255.255.252
encapsulation ppp
!
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.10.6
ip route 10.1.37.0 255.255.255.0 Serial0/3/0:0
ip route 172.30.10.0 255.255.255.0 Serial0/3/1:1
ip http server
ip http authentication local
ip http timeout-policy idle 600 life 86400 requests 10000
!
!
logging trap debugging
no cdp run

I am using this router to replace a 2811 that is currently running with 2 CSU/DSU cards. There are two point to point T1 lines that connect to the branch properties. When i install the 2851, i dont get any routing over the T1 lines. The router always tries to route info over the GE0/1 connection. I have tested this using the tracert command and trying to get to a branch property. THis is my first time setting up a dual T1 card, so i am not sure if i am missing something.

Any help on this matter would be great.

 

[artesian2000]

channel-group 0 timeslots 1-24 speed 56

Don't see why you would be running 56. I'd change and verify both are running at 64

Seeing the other side of the config would help.

 

[Belushi]

First check to make sure that your Serial interfaces are in the up/up state. Then take a look at your route statements:

ip classless
ip route 0.0.0.0 0.0.0.0 172.16.10.6
ip route 10.1.37.0 255.255.255.0 Serial0/3/0:0
ip route 172.30.10.0 255.255.255.0 Serial0/3/1:1


The ip classless command ensures that routing follows the longest match rule stating that the preferred route will be the longest match. I see you have a default route pointing to 172.16.10.6 which is whatever is on the other end of Interface GigabitEthernet0/1. For whatever reason, this is the longest match in whatever address you are trying to route to. If you are trying to get to:

10.1.37.0/24 or
172.30.10.0

then one of the serial addresses should be used.

 

[blubomber]

I will make the changes to 64.

Belushi, i do not currently have the router connected to everything because where it is going, i cannot leave the connections down for too long. But when i did do a show interface command the serials were in a down/down state. Since the router is not connected to the T1 lines, should the serials at least be in a up/down state? Indicating the interface is ready but that there is no line connected. If this is the case, how do i get the interfaces into an up/down state?

thanks again.

 

[Belushi]

If the serial interfaces are not connected to anything you will have a down/down state. The first down represent the physical layer and the second represents the data link layer.

If the only interfaces you have up are the Gigabit Ethernet interfaces it makes snese that everything routes out G0/1. That is the default route. None of the other more specific routes come into play because the interfaces are down.

 

[blubomber]

Well, i used the no shutdown command and got both serials in a up/down state. I am connecting them to exisisting, and working T1 lines.

 

[blubomber]

I think i found the next problem. I noticed, while looking at the excisting routers config, that the encapsulation on the serial connections is HDLC and not PPP. So i am going to reconfig with HDLC and try it again in the morning. i will report back my findings.

Thank you for the help so far.

 

[KiscoKid]

If you're still having problems, maybe the following link will be useful to you -

http://www.cisco.com/en/US/products...ts_feature_guide09186a0080087b21.html#wp46044

 

[blubomber]

Thank you for the link KiscoKid.

I have my new 2851 installed and running great. To solve the problems i was having, i used the "shut" and "no shut" commands on each serial port to reset them. I then set the correct encapsulation on each serial port. After that, i got an up/up state on each serial port and data has been flowing smoothly ever since.

Thank you all for the help.