I assume you are doing floating static route? Did you filter out EIGRP and
SNMP in your access-list? Did you disable cdp? For example:
interface BRI0/0
bandwidth 56
ip address 10.1.x.y 255.255.255.0
no ip directed-broadcast
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer idle-timeout 300
dialer wait-for-carrier-time 10
dialer map ip 10.1.x.2 name hq speed 56 broadcast 18735185470
dialer map ip 10.1.x.1 name hq speed 56 broadcast 18735185472
dialer-group 1
isdn switch-type basic-ni
no cdp enable
ppp authentication chap
ppp multilink
!
router eigrp 1
network 10.0.0.0
no auto-summary
ip classless
ip route 0.0.0.0 0.0.0.0 10.1.2.1 240
ip route 10.11.0.1 255.255.255.255 BRI0/0
ip route 10.99.99.99 255.255.255.255 BRI0/0
no ip http server
!
access-list 102 deny eigrp any any
access-list 102 deny udp any any eq snmp
access-list 102 permit ip any any
dialer-list 1 protocol ip list 102
Chris
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Jim Bond
Sent: Wednesday, December 27, 2000 8:08 PM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: EIGRP problem
Hello,
We have 4000 router and 5200 router at central office,
2500 routers and 3640 routers at branch office. 4000
and 2500s are connected with frame relay, 5200 and
3640s are connected with ISDN backup. Eigrp is the
only protocol. We have a default route from 4000 and
it got advertised on 2500s and 3640s as AD /170. We
also configure a default route on 3640s with AD /200
so in case frame is down, /200 default route will take
over and then can bring up ISDN.
The problem is sometimes when frame is ok, 3640 router
default route changes to AD /200 and hence brings up
ISDN backup (3640 also serves as RAS server). When I
do "clear ip route", the AD /170 default route will
come back again, then some days later, it'll get
replaced by the AD /200 one.
We use the same IOS on all routers but this only
happened on some branch offices, not all of them. Any
idea what wrong it is?
Thanks in advance.
Jim
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