OSPF on Aux

From: Ebru Toker (EToker@tepum.com.tr)
Date: Tue Nov 05 2002 - 01:04:53 GMT-3


Hi group,

2 routers (R5 and R6) have external modems connected to the aux ports. I want them to be OSPF neighbors but I have a problem. After R6 calls R5, it sends hello packets to R5 but I have this debug output on R5

*Mar 1 00:36:12.236: IP: s=10.1.1.6 (Async5), d=224.0.0.5, len 64, rcvd 0
*Mar 1 00:36:12.560: IP: s=10.1.1.5 (local), d=224.0.0.5 (Async5), len 68, sending broad/multicast
*Mar 1 00:36:12.560: IP: s=10.1.1.5 (local), d=224.0.0.5 (Async5), len 68, encapsulation failed

Both of the configurations are below;

CALLING PARTY

R6#sh run
Building configuration...

Current configuration : 1114 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R6
!
!
ip subnet-zero
!
!
!
!
chat-script Dialout ABORT ERROR ABORT BUSY "" "AT" OK "ATDT \T" TIMEOUT 45 CONNECT \c
!
!
!
interface Loopback0
 ip address 2.2.2.2 255.255.255.0
!
interface FastEthernet0/0
 no ip address
 shutdown
 speed auto
!
interface Serial0/0
 ip address 3.3.3.6 255.255.255.0
 encapsulation ppp
!
interface Serial0/1
 no ip address
 shutdown
!
interface Async5
 ip address 10.1.1.6 255.255.255.0
 encapsulation ppp
 dialer in-band
 dialer idle-timeout 900
 dialer map ip 10.1.1.5 name R5 broadcast 250
 dialer-group 1
 async default routing
 async mode interactive
!
router ospf 10
 log-adjacency-changes
 network 0.0.0.0 255.255.255.255 area 0
!
ip classless
no ip http server
!
!
dialer-list 1 protocol ip permit
!
!
line con 0
line aux 0
 exec-timeout 0 0
 script dialer Dialout
 modem InOut
 modem autoconfigure discovery
 transport input all
 autoselect ppp
 stopbits 1
 speed 115200
 flowcontrol hardware
line vty 0 4
 login
!
no scheduler allocate
end

CALLED PARTY

R5#sh run
Building configuration...

Current configuration : 989 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R5
!
!
ip subnet-zero
!
!
!
!
!
!
!
interface FastEthernet0/0
 no ip address
 shutdown
 speed auto
!
interface Serial0/0
 ip address 3.3.3.5 255.255.255.0
 encapsulation ppp
 shutdown
 no fair-queue
 clockrate 128000
!
interface Serial0/1
 no ip address
 shutdown
!
interface Async5
 ip address 10.1.1.5 255.255.255.0
 encapsulation ppp
 dialer in-band
 dialer idle-timeout 900
 dialer map ip 10.1.1.6 name R6 broadcast
 dialer-group 1
 async default routing
 async mode interactive
!
router ospf 10
 log-adjacency-changes
 network 0.0.0.0 255.255.255.255 area 0
!
ip classless
no ip http server
!
!
dialer-list 1 protocol ip permit
!
!
line con 0
line aux 0
 exec-timeout 0 0
 modem InOut
 modem autoconfigure discovery
 transport input all
 autoselect ppp
 stopbits 1
 speed 115200
 flowcontrol hardware
line vty 0 4
 login
!
no scheduler allocate
end

What can be the possible reason of failed encapsulation?

Ebru



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