From: Nigel Taylor (nigel_taylor@xxxxxxxxxxx)
Date: Wed Apr 04 2001 - 04:00:18 GMT-3
Mike,
I noticed you're using chap authentication on the bri
interfaces, but there are no usernames configured on the "dialer map"
command.. What did the "sh isdn status" show for layer 3 calls in progress.
More specifically what did your "debug ppp authen" show about the
authentication process...?
HTH
Nigel..
----- Original Message -----
From: Mike Gutknecht <mgutknec@cisco.com>
To: CCIELAB (E-mail) <ccielab@groupstudy.com>
Sent: Wednesday, April 04, 2001 2:31 AM
Subject: Snapshot routing with RIP unidirectional only
> The simple topology:
>
> R1 - bri0 -----bri0 R2
>
> R1:ISDN number 1111
> R2 ISDN number 2222
>
> I want R2, the snapshot client, to call R1.
>
> The problem: R2 dials and connects with R1. R1 gets R2s routes but R2
does
> not get routes from R1. By debugging (IP packet, dialer packet,
snapshot),
> I find that "encapsulation failed" on R1's RIP packets as they are sent
out
> bri0 to R2. I can't figure out why. I have a dialer map statement on
R1's
> bri0 pointing to R2 with the broadcast keyword. Also, a ping from R2-bri0
> to R1-bri0 works. I did notice that when the call came in to R1 the
calling
> party's number (2222) was not identified.
>
> Any ideas? Also, does the called party always need a "dialer map
> ...broadcast" statement for snapshot to work?
>
> Here is the debug ip packet on the RIP updates at router 1. Recall that a
> ping from 10.0.1.1 to 10.0.1.2 works.
>
> 01:36:41: IP: s=10.0.1.2 (BRI0), d=255.255.255.255, len 92, rcvd 2
> 01:36:41: IP: s=10.0.1.2 (BRI0), d=255.255.255.255, len 32, rcvd 2
> router1#
> 01:36:54: IP: s=10.0.1.1 (local), d=255.255.255.255 (BRI0), len 92,
sending
> broad/multicast
> 01:36:54: IP: s=10.0.1.1 (local), d=255.255.255.255 (BRI0), len 92,
> encapsulation failed
> 01:36:54: IP: s=10.0.1.1 (local), d=255.255.255.255 (BRI0), len 32,
sending
> broad/multicast
> 01:36:54: IP: s=10.0.1.1 (local), d=255.255.255.255 (BRI0), len 32,
> encapsulation failed
> 01:36:54: IP: s=10.1.1.1 (local), d=255.255.255.255 (Ethernet0), len 172,
> sending broad/multicast
> 01:36:55: IP: s=10.1.2.1 (local), d=255.255.255.255 (Loopback0), len 172,
> sending broad/multicast
> 01:36:55: IP: s=10.1.3.1 (local), d=255.255.255.255 (Loopback1), len 172,
> sending broad/multicast
> 01:36:55: IP: s=10.1.2.1 (Loopback0), d=255.255.255.255, len 172,
unroutable
> 01:36:55: IP: s=10.1.3.1 (Loopback1), d=255.255.255.255, len 172,
unroutable
> 01:36:55: IP: s=10.0.1.1 (local), d=10.0.1.2 (BRI0), len 132, sending !
DUE
> to the neighbor statement in the RIP config, still fails
> 01:36:55: IP: s=10.0.1.1 (local), d=10.0.1.2 (BRI0), len 132,
encapsulation
> failed
> 01:36:55: IP: s=10.0.1.1 (local), d=10.0.1.2 (BRI0), len 32, sending
> 01:36:55: IP: s=10.0.1.1 (local), d=10.0.1.2 (BRI0), len 32, encapsulation
> failed
>
> Here are the relevant portions of the configs
>
> router1#sh run
> Building configuration...
>
> Current configuration:
> !
> version 11.3
> !
> hostname router1
> !
> enable password cisco
> !
> username router2 password 0 cisco
>
> isdn switch-type basic-5ess
> !
> !
> !
> !
> interface Loopback0
> ip address 10.1.2.1 255.255.255.0
> !
> interface Loopback1
> ip address 10.1.3.1 255.255.255.0
> !
> interface Ethernet0
> ip address 10.1.1.1 255.255.255.0
> no ip route-cache
> no ip mroute-cache
> !
>
> interface BRI0
> ip address 10.0.1.1 255.255.255.0
> encapsulation ppp
> no ip route-cache
> no ip mroute-cache
> dialer map ip 10.0.1.2 broadcast 2222
> dialer-group 1
> isdn switch-type basic-5ess
> snapshot server 5 dialer
> ppp authentication chap
> hold-queue 75 in
> !
> router rip
> network 10.0.0.0
> neighbor 10.0.1.2
> !
> ip classless
> !
> no logging console
> dialer-list 1 protocol ip permit
>
> ------
>
> !
> hostname router2
> !
> isdn switch-type basic-5ess
> username router1 password 0 cisco
> !
> !
> !
> !
> interface Loopback0
> ip address 10.2.2.1 255.255.255.0
> !
> interface Loopback1
> ip address 10.2.3.1 255.255.255.0
> !
> interface Ethernet0
> ip address 10.2.1.1 255.255.255.0
> no ip route-cache
> no ip mroute-cache
> !
> interface BRI0
> ip address 10.0.1.2 255.255.255.0
> encapsulation ppp
> no ip route-cache
> no ip mroute-cache
> dialer idle-timeout 30
> dialer map snapshot 1 1111
> dialer map ip 10.0.1.1 broadcast 1111
> dialer-group 1
> isdn switch-type basic-5ess
> snapshot client 5 10 suppress-statechange-update dialer
> ppp authentication chap
> hold-queue 75 in
> !
> router rip
> network 10.0.0.0
> !
> ip classless
> !
> dialer-list 1 protocol ip permit
> !
>
>
>
> Mike Gutknecht
> Systems Engineer
> Cisco Systems
> 4550 SW Kruse Way Suite 365
> Lake Oswego, OR 97035
> Email:mgutknec@cisco.com
> Desk: 503.699.4679
> Cell: 503.704.8365
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