Hmm, I don't think the problem lies with the ISDN or its capabiltiy to dial, as DW mentioned, pings are possible from router to router, so a route is possible, just not from the LAN. possibly a better debug would be debug ip icmp an then run either extended pings from the Fast Ether, or from the client on the LAN. HTH Keith ""Juntao"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > I'd check the isdn stuf, deb dialer, deb isdn q931, etc... > > ""DW"" a icrit dans le message de news: > [EMAIL PROTECTED] > > When the primary is up the route table shows: > > > > 192.1.1.0/24 is variably subnetted, 2 subnets, 2 masks > > S 192.1.1.0/24 is directly connected, Serial0/0:1 > > C 192.1.1.25/32 is directly connected, Serial0/0:1 > > > > When the primary goes down it shows: > > > > 192.1.1.0/24 is variably subnetted, 2 subnets, 2 masks > > S 192.1.1.0/24 is directly connected, BRI1/1 > > C 192.1.1.25/32 is directly connected, BRI1/1 > > > > This is why I don't understand why it will not work !! > > > > Thanks, > > > > Derek > > > > > > > > wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > What does your route table show on both routers? > > > > > > Mark > > > > > > > I have a 3640 router (Pri rate Interface / backup ISDN interfaces) > that > > is > > > > not performing as I thought it would...One of the channelised > interfaces > > > > went down yesterday and the backup ISDN for that line kicked in, > however > > I > > > > could no longer ping into the remote site once the backup came up - > The > > > > remote router is a 1720. > > > > I could ping from router to router (In both directions). > > > > I could not ping from a client in Site A to router in Site B, or > beyond. > > > > I could not ping from a client in Site B to router in Site A, or > beyond. > > > > > > > > Below is part of the config: > > > > > > > > SITE A - 3640 > > > > > > > > interface FastEthernet0/0 > > > > ip address 192.168.25.25 255.255.255.0 > > > > > > > > duplex auto > > > > > > > > speed 100 > > > > > > > > no cdp enable > > > > > > > > > > > > interface Serial0/0:1 > > > > > > > > bandwidth 128 > > > > > > > > backup delay 20 20 > > > > > > > > backup interface BRI1/1 > > > > > > > > ip unnumbered FastEthernet0/0 > > > > > > > > no ip directed-broadcast > > > > > > > > encapsulation ppp > > > > > > > > fair-queue 64 256 0 > > > > > > > > no cdp enable > > > > > > > > > > > > > > > > interface BRI1/1 > > > > > > > > ip unnumbered FastEthernet0/0 > > > > > > > > no ip directed-broadcast > > > > > > > > encapsulation ppp > > > > > > > > dialer idle-timeout 300 > > > > > > > > dialer string XXXXXXXX > > > > > > > > dialer hold-queue 20 > > > > > > > > dialer-group 1 > > > > > > > > isdn switch-type basic-net3 > > > > > > > > no cdp enable > > > > > > > > ppp authentication chap > > > > > > > > > > > > > > > > ip route 192.1.1.0 255.255.255.0 Serial0/0:1 > > > > > > > > ip route 192.1.1.0 255.255.255.0 BRI1/1 50 > > > > > > > > > > > > > > > > access-list 100 permit ip any any > > > > > > > > access-list 100 permit icmp any any > > > > > > > > dialer-list 1 protocol ip list 100 > > > > > > > > > > > > > > > > SITE B - 1720 > > > > > > > > > > > > > > > > interface BRI0 > > > > ip unnumbered FastEthernet0 > > > > encapsulation ppp > > > > dialer idle-timeout 300 > > > > dialer string XXXXXXX > > > > > > > > dialer hold-queue 50 > > > > dialer-group 1 > > > > isdn switch-type basic-net3 > > > > ppp authentication chap > > > > ! > > > > interface FastEthernet0 > > > > ip address 192.1.1.25 255.255.255.0 > > > > speed auto > > > > ! > > > > interface Serial0 > > > > bandwidth 128 > > > > backup delay 20 20 > > > > backup interface BRI0 > > > > ip unnumbered FastEthernet0 > > > > ! > > > > ip classless > > > > ip route 192.168.25.0 255.255.255.0 Serial0 > > > > ip route 192.168.25.0 255.255.255.0 BRI0 50 > > > > no ip http server > > > > ! > > > > access-list 100 permit ip any any > > > > access-list 100 permit icmp any any > > > > dialer-list 1 protocol ip list 100 > > > > > > > > > > > > > > > > Can anyone out there see anything obviously wrong with the above > > config.... > > > > > > > > > > > > > > > > Thanks in advance. > > > > > > > > > > > > > > > > Derek
Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=62781&t=62568 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
