Problem on line protocol

[ih1]

Hello!

I just installed two separated networks and i am planning to link the two networks by microwave.
The following figure represents the topology of networks:

| |-----------| |------| |-----| |----- |
| |cisco|-E0|
|-----E0-|cisco 2500 |-S0-|modem |---|modem|--S0|2500 | |
| |------------ |------| |------ |-----|

The problem i am facing is that i am not able to have my line protocol up in both sides. Sometimes my line protocol goes up and suddenly goes down. In addition, i am not able to ping in my serial port. Is there anyone who help me solve this problem?

best Regards/IH1

 

[l1carter]

Can you post a copy of your configs? A line protocol is a layer 3 or above problem this would point a confiuration error but I can't be 100% sure.

Lee

 

[rcasta]

Need some config posting...

 

[experimenter]

Hi ih1,

If serial line in up but line protocol is down, it means your microwave link is working. I suggest you give a go to CDP, loop back test and encapsulation settings.

Good luck



Experimenter

 

[ih1]

Hi Debugall

thanks for your reply and following are the config. requested for the two sites:

Site A

# Configuration du routeur cisco 2500 à Mutsamudu
!
version 11.2
no service udp-small-servers
no service tcp-small-servers
!
hostname site_mutsamudu
!
aaa new-model
aaa authentication username-prompt login:
aaa authentication login console local
enable secret 5 xxxxxxxxxxxxxxxxxx
enable password ciscomor
!
username admin password 7 xxxxxxxxxxxxxxxx
ip subnet-zero
ip domain-name MUTSAMDU.local
ip name-server 192.168.xxx.xxx
ip name-server 192.168.xxx.xxx
isdn switch-type ntt
!
interface ethernet0
ip address 192.168.a.xxx 255.255.255.0
no ip mroute-cache
delay 40000
keepalive 20
!
interface serial0
description liaison 2 Mbits between Moroni et Mutsamudu
ip address 192.168.8.20 255.255.255.0
no ip mroute-cache
delay 40000
keepalive 60
!
interface serial1
shutdown
!
interface serial2
shutdown
!
.
.
interface serial9
shutdown
!
interface Brio
shutdown
!
ip classless
ip route 192.168.b.0 255.255.255.0 192.168.8.30
!
line con 0
line aux 0
line vty 0 4
password xxxxx
!
end
--------------------------------

Site B

# Configuration du routeur cisco 2500 à Moroni
!
version 11.2
no service udp-small-servers
no service tcp-small-servers
!
hostname site_moroni
!
aaa new-model
aaa authentication username-prompt login:
aaa authentication login console local
enable secret 5 xxxxxxxxxxxxxxxxxxxxxxxx
enable password ciscomor
!
username admin password 7 xxxxxxxxxxxxxxxxxxxx
ip subnet-zero
ip domain-name MORONI.local
ip name-server 192.168.xxx.xxx
ip name-server 192.168.xxx.xxx
isdn switch-type ntt
!
interface ethernet0
ip address 192.168.b.60 255.255.255.0
no ip mroute-cache
delay 40000
keepalive 20
!
interface serial0
description liaison 2 Mbits between Moroni et Mutsamudu
ip address 192.168.8.30 255.255.255.0
no ip mroute-cache
delay 40000
keepalive 60
!
interface serial1
shutdown
!
interface serial2
shutdown
!
.
.
interface serial9
shutdown
!
interface Brio
shutdown
!
ip classless
ip route 192.168.a.0 255.255.255.0 192.168.8.20
!
line con 0
line aux 0
line vty 0 4
password moroni
!
end
------------

I am looking forward to reading as soon as possible.

Best Regards/ih1

 

[shanish]

The problem is probably with your microwave Or with Sync. between the microwave and the serial port.
The microwave has some kind of test ability. see if you can create some kind of loopback and then see if you still have this problem.
You can also use debug to see more or less what happens when the line is brought down.