troubleshooting Question

ISDN timeout

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ssshibu asked on
Routers
4 Comments1 Solution973 ViewsLast Modified:
Hi,

We are trying to setup ISDN connectivity between two location.In each location we have BRI link configured with Multilink. Now we are able to establish connectivity but when we ping to the remote center, then the first BRI channel comes up and we are able to ping the remote end ip with out any time out.When we increase packet size  the second channel also up and get 128 Kbps BW.When packet size is reducing the second channel is down and gets request timed out. That time the first channel is up,and we get the ping from the router console to remote router's Fa0/0 but not happening from the PCS.

why is this happening ? i am attaching both side router configs. please check and help me .thanks


Router one
=========

sh run
Building configuration...

Current configuration : 2612 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname adyar
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
!
isdn switch-type basic-net3
!
!
username cdac privilege 15 secret 5 $1$ZbIY$bbtakNyR7OxweIlkUhE9S.
username adyar password 0 cdac
username gandhigram password 0 cdac
username nellore password 0 cdac
!
!
!
!
!
interface Loopback0
 ip address 172.16.18.31 255.255.255.0
!
interface Loopback1
 no ip address
!
interface FastEthernet0/0
 ip address 192.168.31.81 255.255.255.240
 duplex auto
 speed auto
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface BRI0/0/0
 no ip address
 encapsulation ppp
 dialer pool-member 1
 isdn switch-type basic-net3
 isdn point-to-point-setup
 ppp authentication chap
 ppp multilink
 ppp multilink mrru local 1500
!

interface Dialer3
 description ***connection to gandhigram***
 ip unnumbered Loopback0
 encapsulation ppp
 dialer pool 1
 dialer remote-name gandhigram
 dialer idle-timeout 30
 dialer string 04512450005
 dialer load-threshold 5 either
 dialer-group 1
 ppp authentication chap
 ppp multilink
 ppp multilink mrru local 1500
!
!

ip route 192.168.32.80 255.255.255.240 Dialer3

!
!
ip http server
no ip http secure-server
!
dialer-list 1 protocol ip permit
!
!
!
!
control-plane
!
!
!
line con 0
 password cdactvm
 login local
line aux 0
line vty 0 4
 privilege level 15
 login local
 transport input telnet ssh
!
scheduler allocate 20000 1000
end

adyar#




Router 2
=======

sh run
Building configuration...

Current configuration : 2258 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname gandhigram
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
!
isdn switch-type basic-net3
!
!
username cdac2 password 0 cdac
username cdac privilege 15 secret 5 $1$ZbIY$bbtakNyR7OxweIlkUhE9S.
username gandhigram password 0 cdac
username nellore password 0 cdac
username amblikkai password 0 cdac
!
!
!
!
!
interface Loopback0
 ip address 172.16.18.32 255.255.255.0
!
interface FastEthernet0/0
 ip address 192.168.32.81 255.255.255.240
 duplex auto
 speed auto
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface BRI0/0/0
 no ip address
 encapsulation ppp
 dialer pool-member 1
 isdn switch-type basic-net3
 isdn point-to-point-setup
 ppp authentication chap
 ppp multilink
 ppp multilink mrru local 1500
!

!

!
interface Dialer3
 description ***connection to adyar***
 ip unnumbered Loopback0
 encapsulation ppp
 dialer pool 1
 dialer remote-name adyar
 dialer idle-timeout 30
 dialer string 04422209720
 dialer load-threshold 5 either
 dialer-group 1
 ppp authentication chap
 ppp multilink
 ppp multilink mrru local 1500
!

ip route 192.168.31.80 255.255.255.240 Dialer3

!
!
ip http server
no ip http secure-server
!
dialer-list 1 protocol ip permit
!
!
!
!
control-plane
!
!
!
line con 0
 password cdac
 login local
line aux 0
line vty 0 4
 privilege level 15
 login local
 transport input telnet ssh
!
scheduler allocate 20000 1000
end

gandhigram#





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