From: abdul_rahim@xxxxxxxxxxxxxx
Date: Fri Jul 21 2000 - 16:50:12 GMT-3
Use Dialer Watch-lists when wanna configure EIGRP over ISDN
Configs:
interface BRI0/0
ip address 146.184.72.34 255.255.255.252
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer map bridge name Memphis_2611 broadcast 3685429
dialer map ip 146.184.37.0 name Memphis_2611 broadcast 3685418
dialer map ip 146.184.37.0 name Memphis_2611 broadcast 3685429
dialer map ip 146.184.72.33 name Memphis_2611 broadcast 3685418
dialer map ip 146.184.72.33 name Memphis_2611 broadcast 3685429
dialer load-threshold 1 outbound
dialer watch-group 1
dialer-group 1
isdn switch-type basic-ni
isdn spid1 90136298150100 3629815
isdn spid2 90156505760100 5650576
no cdp enable
ppp authentication chap
ppp multilink
bridge-group 2
router eigrp 100
network 146.184.0.0
access-list 101 deny eigrp any any
access-list 101 permit ip any any
dialer watch-list 1 ip 146.184.37.0 255.255.255.0
dialer-list 1 protocol ip list 101
It works fine,Actually I had made the 146.184.37.0/24 as the route to be
watched by the router ,If this route disappers from the routing table,Due
to the primary link failure in my case,
then this router dials immediately and then eigrp hellos could flow over
it,as soon as the link ( primarily ) comes back up
The ISDN link gets deactivated after a random interval
Abdul
"Bill Dicks" <wdicks@structure-tech.com> on 07/21/2000 11:51:11 AM
Please respond to "Bill Dicks" <wdicks@structure-tech.com>
To: ccielab@groupstudy.com
cc: (bcc: Abdul Rahim/IS Operations/Operations/CCSI)
Subject: RE: EIGRP over ISDN
If you filter the Hellos, then how will the two routers become neighbors
unless the line is already up? If they don't become neighbors, how will
routing occur and routes be exchanged?
I see you have the floating static, so if your link to the WAN goes down,
this will be the only route. BUT, since you are filtering eigrp, you will
never become neighbors with the other router on the other side of the ISDN
link and no routes will be exchanged. If you're going to use a floating
static, use 0.0.0.0 so that all traffic goes that way (assuming of course
that you have a normal 0.0.0.0 route when the WAN link is up). But without
Hellos, no neighbor and no routes.
Bill
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
Wojtek Iwanczyk
Sent: Friday, July 21, 2000 1:08 PM
To: aub95@emirates.net.ae; ccielab@groupstudy.com
Subject: Re: EIGRP over ISDN
Here is a sample config of DDR using EIGRP ... Filter eigrp "helo s" with
the dialer list referencing an extended ip access list ...
interface Dialer0
description ISDN Dial-up to NY-PRI-BRI-Router
ip unnumbered Loopback0
no ip directed-broadcast
ip nat outside
encapsulation ppp
bandwidth 2
delay 6000
dialer remote-name Router1
dialer idle-timeout 90
dialer string xxxxxxxxxxxxxx
dialer string xxxxxxxxxxxxxx
dialer pool 1
dialer-group 1
pulse-time 0
ppp authentication chap callin
ppp chap hostname xxxxx
ppp chap password xxxxx
router eigrp 1
network 172.31.0.0
no auto-summary
ip route 172.31.0.0 255.255.0.0 Dialer0 240
access-list 160 deny udp any any eq snmp
access-list 160 deny eigrp any any
access-list 160 permit ip any any
dialer-list 1 protocol ip list 160
Wojtek Iwanczyk
Sr Support Engineer
Exenet Technologies
15 E 26th Street
New York, NY 10010
(212) 684 7300
wiwanczyk@exenet.com
>>> Walid Fahme <aub95@emirates.net.ae> 07/21/00 01:14PM >>>
Question:
To limit Distance Vector Protocol updates on a dialup link (ISDN) we
have several options (Snapshot, Watch-Group)
To limit Link State OSPF updates ==> "ip ospf demand"
What about EIGRP, any solution ???
(Also, is there anything for IS-IS, NLSP and others ????)
Appreciate your comments.
Walid Fahme.
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