From: Mike Gutknecht (mgutknec@xxxxxxxxx)
Date: Wed Apr 04 2001 - 12:50:01 GMT-3
Thanks, Nigel
Authentication worked fine. I had the same problem when I had no
authentication so I can easily remove it altogether.
sh isdn status showed proper behavior. The call comes up and R1 actually
gets RIP routes in its table from R2, but R2 does not get routes from R1.
-Mike
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Nigel Taylor
Sent: Wednesday, April 04, 2001 12:00 AM
To: Mike Gutknecht; CCIELAB (E-mail)
Subject: Re: Snapshot routing with RIP unidirectional only
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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