From: Nathan Kleven (nkleven@intellinet.ws)
Date: Tue Nov 19 2002 - 11:52:22 GMT-3
Did you specify a network statement for each of the BRI's under OSPF? If
you do a "SH IP OS NE" on the routers in a failed condition, are you still
seeing an adjacency with the remote ISDN router?
__________
Nate Kleven
-----Original Message-----
From: Nancy Courtney (ncourtne) [mailto:ncourtne@cisco.com]
Sent: Tuesday, November 19, 2002 5:56 AM
To: 'Donny MATEO'
Cc: 'ccie'; nobody@groupstudy.com
Subject: RE: Solie lab 16-pg 536--backup interface using ISDN
Hi Donny,
Yes, I setup all IP traffic to be interesting. After more work, I found
that you can enable backup interface on both routers if you use frame relay
subinterfaces. I did not set an idle timeout on the bri interfaces, because
the backup delay cmd on the serial interfaces states to kick the bri line up
after 10 sec and disconnect after 120 seconds if there is no traffic. OSPF
Hellos should keep the bri link open....yes? thanks Nancy
-----Original Message-----
From: Donny MATEO [mailto:donny.mateo@sg.ca-indosuez.com]
Sent: Tuesday, November 19, 2002 1:03 AM
To: Nancy Courtney (ncourtne)
Cc: ccie; nobody@groupstudy.com
Subject: Re: Solie lab 16-pg 536--backup interface using ISDN
the problem with 2 backup interface is when say rtr1 serial interface is
down, rtr1 will enable the BRI and call the rtr2. A problem will occured if
on router 2, the serial interface is indicated as up (as is the norm with
frame-relay). Router 2 will force the BRI to be on standby state then it
would not be able to be used to accept the call from rtr1.
for the disconecting after 120sec, did you specify OSPF as interesting
traffic under your access-list for the dialer-list on both routers ?
Donny
"Nancy Courtney
\(ncourtne\)" To: "ccie"
<ccielab@groupstudy.com>
<ncourtne@cisco.c cc:
om> Subject: Solie lab 16-pg
536--backup interface using ISDN
Sent by:
nobody@groupstudy
.com
19-11-2002 12:13
Please respond to
"Nancy Courtney
\(ncourtne\)"
Good Evening,
I am having issues working this lab where item 5 states "both routers must
be capable of initiating ISDN calls" . Solie's solution places the backup
interface cmd on both routers' serial interface. On my lab, this brings
both sides into a standby state and neither will call the other.
When removing the backup interface cmd off one router, backup works well
except the B channels start to disconnect on the called router after the 120
second timeout.
Is Solie incorrect on this config? If not, can someone tell me what I am
doing wrong?
Below is the config where R1 will call R2; however, R2 disconnects the call
after 120 seconds:
R1-Greenbay
interface BRI0
ip address 170.20.20.1 255.255.255.252
encapsulation ppp
dialer map ip 170.20.2.2 name R2-SanDiego broadcast 6785556789 dialer map
ip 170.20.2.2 name R2-SanDiego broadcast 6785559876 dialer load-threshold 1
either dialer-group 1 isdn switch-type basic-ni isdn spid1 67855512341101
isdn spid2 67855543211102 ppp authentication pap ppp pap sent-username
R1-Greenbay password 7 14141B180F0B ppp multilink end ! interface Serial0
backup delay 10 120 backup interface BRI0 backup load 50 25 ip address
170.10.251.9 255.255.255.252 encapsulation frame-relay ip ospf network
point-to-point no fair-queue frame-relay interface-dlci 102 end
R2-SanDiego
interface BRI0
ip address 170.20.20.2 255.255.255.252
encapsulation ppp
dialer map ip 170.20.20.1 name R1-Greenbay broadcast 6785551234 dialer map
ip 170.20.20.1 name R1-Greenbay broadcast 6785554321 dialer load-threshold
1 either dialer-group 1 isdn switch-type basic-ni isdn spid1
67855567891101 isdn spid2 67855598761102 ppp authentication pap ppp pap
sent-username R2-SanDiego password 7 14141B180F0B ppp multilink end !
interface Serial0 ip address 170.10.251.10 255.255.255.252 encapsulation
frame-relay ip ospf network point-to-point no fair-queue frame-relay
interface-dlci 101 end
thanks
Nancy
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