This is normal behaviour: if you configure BRI as backup, it will go in standby mode and line protocol goes down. You can avoid this by configuring a dialer interface as backup. Then the dialer interface will go in standby mode, but the BRI stays up!! This is preferred since: 1. some Telco's will lock out your line when it is too long down; 2. you can easily detect if your backup goes down. This won't give any surprises when you really need the backup!
So replace this: interface s0 backup interface bri0 By following: interface s0 backup interface dialer 1 interface dialer 1 dialer pool 1 interface bri0 dialer pool-member 1 In your case I would try something like this: interface s0 ip address 172.20.14.1 255.255.255.252 backup interface dialer 1 dialer-list 1 protocol ip permit interface dialer 1 description Dialer to LDS ip address 172.21.14.1 255.255.255.0 encapsulation ppp ppp authentication chap ppp chap password 7 1307161100191426222A23 dialer idle-timeout 750 dialer map ip 172.21.14.2 name LDS 23225374 dialer-group 1 dialer pool 1 interface bri0 isdn switch-type basic-net3 encapsulation ppp ppp authentication chap ppp chap password 7 1307161100191426222A23 dialer pool-member 1 Hope this helps, Eric Brouwers PS Be careful about moving all statements below BRI interface to dialer interface. This is what Cisco says about it: "...Commands that apply before authentication is complete must be configured on the physical (BRI) interface and not on the dialer profile. Dialer profiles do not copy PPP authentication commands (or LCP commands) to the physical interface .." I've never tried the most efficient configuration, that's why there is some redundancy in the config above. Maybe someone else can comment about removing the PPP encaps. and auth. commands from the dialer interface?? Cheers, Eric ----- Original Message ----- From: "H T" To: Sent: Tuesday, July 08, 2003 8:36 AM Subject: ISDN case... [7:72017] > Hi all, > I have a problem with my ISDN back up link... the interface in STANDBY mode. > > > TBRS#sho inter bri0 > BRI0 is standby mode, line protocol is down > Hardware is PQUICC BRI > Description: Dialer to Lovisenberg > Internet address is 172.21.14.1/24 > MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, > reliability 255/255, txload 1/255, rxload 1/255 > Encapsulation PPP, loopback not set > Last input never, output never, output hang never > Last clearing of "show interface" counters 00:39:45 > Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 > Queueing strategy: weighted fair > Output queue: 0/1000/64/0 (size/max total/threshold/drops) > Conversations 0/0/16 (active/max active/max total) > Reserved Conversations 0/0 (allocated/max allocated) > Available Bandwidth 48 kilobits/sec > 5 minute input rate 0 bits/sec, 0 packets/sec > 5 minute output rate 0 bits/sec, 0 packets/sec > 0 packets input, 0 bytes, 0 no buffer > Received 0 broadcasts, 0 runts, 0 giants, 0 throttles > 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort > 0 packets output, 0 bytes, 0 underruns > 0 output errors, 0 collisions, 0 interface resets > 0 output buffer failures, 0 output buffers swapped out > 0 carrier transitions > > > and the configuration is > > hostname TBRS > ! > username LDS password 7 15100A0F0F3F3B28213D3E > isdn switch-type basic-net3 > ! > interface BRI0 > description Dialer to LDS > ip address 172.21.14.1 255.255.255.0 > encapsulation ppp > dialer idle-timeout 750 > dialer map ip 172.21.14.2 name LDS 23225374 > dialer-group 1 > isdn switch-type basic-net3 > ppp authentication chap > ppp chap password 7 1307161100191426222A23 > ! > interface FastEthernet0 > ip address 172.20.40.1 255.255.255.0 > ip helper-address 100.73.120.16 > speed auto > no cdp enable > ! > interface Serial0 > backup interface BRI0 > ip address 172.20.14.1 255.255.255.252 > no fair-queue > ! > router eigrp 1 > redistribute connected > redistribute static > passive-interface FastEthernet0 > network 172.0.0.0 > no auto-summary > no eigrp log-neighbor-changes > ! > ip classless > ip route 0.0.0.0 0.0.0.0 172.20.14.2 > ip route 0.0.0.0 0.0.0.0 172.21.14.2 200 > no ip http server > ! > dialer-list 1 protocol ip permit > > > > > The other side is configred in the same way. > > > Cheers Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72021&t=72017 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
