From: Sean C. (Upp_and_Upp@xxxxxxxxxxx)
Date: Sun Apr 07 2002 - 00:51:57 GMT-3
Hi Kym,
I have a stupid question (there are no stupid questions - just stupid people
that ask the questions) - I don't see where you state what issure you're
tying to resolve - is it that the BRI is always up or that it's not coming
up at all?
Since the majority of posts on Demand are on BRIs staying up when they
shouldn't - I'll assume that is the issue. 2 suggestions:
1) use the undocumented command "debug ip ospf monitor" and see what's
bringing up the link.
2) if that doesn't show the culprit then start shutting down links
one-by-one. See if the demand still comes up after the link is shut. It's
time consuming but you'll find the stinker.
HTH,
Sean
----- Original Message -----
From: "kym blair" <kymblair@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Saturday, April 06, 2002 4:28 PM
Subject: OSPF over BRI -- need more suggestions
Still having a problem with ospf demand-circuit ... need help. I've
searched the archives and tried all the suggestions to no avail.
Of course, am using "no peer neighbor-route" and "ip ospf cost 9999", and
only have "ip ospf demand-circuit" on one end (have tried it on each end).
I want ospf to remain "interesting" so it will exchange routing tables then
let demand-circuit quiet the line.
Using "ip ospf network point-to-point", ospf updates are continually
multicast over the BRI, and using "ip ospf network point-to-multipoint",
they are unicast; either way, they are interesting and keep the BRI up.
My configs at the moment are:
R6:
interface BRI0/0
bandwidth 64
ip address 137.20.224.6 255.255.240.0
encapsulation ppp
no ip route-cache
ip ospf network point-to-multipoint
ip ospf cost 9999
no ip mroute-cache
no keepalive
dialer map ip 137.20.224.5 broadcast 8358662
dialer-group 6
isdn switch-type basic-ni
isdn spid1 0835866101 8358661
no peer neighbor-route
no cdp enable
!
dialer-list 6 protocol ip permit
R5:
interface BRI0
bandwidth 64
ip address 137.20.224.5 255.255.240.0
encapsulation ppp
no ip route-cache
ip ospf network point-to-multipoint
ip ospf cost 9999
ip ospf demand-circuit
no ip mroute-cache
no keepalive
dialer map ip 137.20.224.6 broadcast 8358661
dialer-group 6
isdn switch-type basic-ni
isdn spid1 0835866201 8358662
no peer neighbor-route
!
dialer-list 6 protocol ip permit
WITH "IP OSPF NETWORK POINT-TO-MULTIPOINT":
R6#debug dialer packet
Dial on demand packets debugging is on
01:57:22: BR0/0 DDR: ip (s=137.20.224.6, d=137.20.224.5), 120 bytes,
outgoing interesting (ip PERMIT)
01:57:27: BR0/0 DDR: ip (s=137.20.224.6, d=137.20.224.5), 120 bytes,
outgoing interesting (ip PERMIT)
01:57:31: BR0/0 DDR: ip (s=137.20.224.6, d=137.20.224.5), 120 bytes,
outgoing interesting (ip PERMIT)
R5#debug dialer packet
Dial on demand packets debugging is on
01:59:41: BR0 DDR: ip (s=137.20.224.5, d=137.20.224.6), 120 bytes, outgoing
interesting (ip PERMIT)
01:59:41: BR0 DDR: ip (s=137.20.224.5, d=137.20.224.6), 120 bytes, outgoing
interesting (ip PERMIT)
01:59:46: BR0 DDR: ip (s=137.20.224.5, d=137.20.224.6), 120 bytes, outgoing
interesting (ip PERMIT)
WITH "IP OSPF NETWORK POINT-TO-POINT":
02:00:27: BR0/0 DDR: ip (s=137.20.224.6, d=224.0.0.5), 120 bytes, outgoing
interesting (ip PERMIT)
02:00:27: BR0/0 DDR: sending broadcast to ip 137.20.224.5
02:00:31: BR0/0 DDR: ip (s=137.20.224.6, d=224.0.0.5), 120 bytes, outgoing
interesting (ip PERMIT)
02:00:31: BR0/0 DDR: sending broadcast to ip 137.20.224.5
OSPF Demand-Circuit has worked for me in the past, but not today. any
ideas?
Thanks, Kym
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:57:58 GMT-3