05-18-2006 11:05 PM - edited 03-03-2019 12:45 PM
Hi,
I have 803 router, ISDN is not disconnecting automatically. I have configured idle-timeout for 50 seconds.
Secounds idle is not showing when i excute "show isdn history"
Configuration :
interface Ethernet0
ip address 172.22.127.254 255.255.224.0
!
interface BRI0
description connected to NRAS
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
no cdp enable
ppp authentication pap callin
ppp pap sent-username XXX@XXX.com password 0 XXX123
ppp multilink
!
interface Dialer1
description connected to NRAS
ip address 97.184.x.x.255.255.224
encapsulation ppp
dialer pool 1
dialer idle-timeout 50
dialer string XXXXXXX
dialer-group 1
no cdp enable
ppp authentication pap callin
ppp pap sent-username XXX@XXX.com password 0 XXX123
ppp multilink
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 97.184.30.x.x.255.255 97.184.30.58
no ip http server
!
!
dialer-list 1 protocol ip permit
ELGI-Cochin#sh is his
--------------------------------------------------------------------------------
ISDN CALL HISTORY
--------------------------------------------------------------------------------
Call History contains all active calls, and a maximum of 100 inactive calls.
Inactive call data will be retained for a maximum of 15 minutes.
--------------------------------------------------------------------------------
Call Calling Called Remote Seconds Seconds Seconds Charges
Type Number Number Name Used Left Idle Units/Currency
--------------------------------------------------------------------------------
Out ---N/A--- 3233252 RNCCN1 6072 Unavail - 0
05-18-2006 11:27 PM
I think you need to know the config. for your coressponding dialer interface at the NRAS.
05-19-2006 02:15 AM
uvaraj
The idle timeout will take down the line when it has been idle for that period of time. When the dialer list says ip permit, then any IP packet going over the ISDN link will reset the idle timer. How much traffic is going over this link and what is the possibility that this is enough traffic that the link is never idle for that period of time?
HTH
Rick
05-19-2006 03:00 AM
Is it wise to have a default static route destined for the dialer interface. All default traffic will try the dialer interface. That could be alot of unnecessary traffic. Use a floating static route
ip route 0.0.0.0 0.0.0.0 dialer 1 2
The admin distance was changed to 2 in this statement. That means that any traffic destined for default will not take dialer 1 until the primary choice of traffic for default is down. Or you can remove the default static route all together and place a more specific route in its place, one that will not trigger the dialer.
05-19-2006 03:42 AM
Hi,
Agree with Rick. You need to filter interesting from non interesting traffic.
In your config all ip traffic will keep you connection up (broadcast, mutilcast.. routing protocols..)
I will suggest to start bu adding this:
access-list 120 deny ip any 0.0.0.0 0.0.0.255
access-list 120 deny ip any 224.0.0.0 0.255.255.255
access-list 120 deny ip any 127.0.0.0 0.255.255.255
access-list 120 deny ip 224.0.0.0 0.255.255.255 any
access-list 120 deny ip 127.0.0.0 0.255.255.255 any
access-list 120 deny udp any any eq netbios-ns
access-list 101 deny udp any any eq netbios-dgm
access-list 120 deny ospf any any
access-list 120 deny eigrp any any
access-list 120 deny igrp any any
access-list 120 permit tcp any any
access-list 120 permit udp any any
access-list 120 permit ip any any
dialer-list 1 protocol ip list 120
HTH, please rate.
cisand
05-19-2006 03:43 AM
Hi,
Agree with Rick. You need to filter interesting from non interesting traffic.
In your config all ip traffic will keep you connection up (broadcast, mutilcast.. routing protocols..)
I will suggest to start bu adding this:
access-list 120 deny ip any 0.0.0.0 0.0.0.255
access-list 120 deny ip any 224.0.0.0 0.255.255.255
access-list 120 deny ip any 127.0.0.0 0.255.255.255
access-list 120 deny ip 224.0.0.0 0.255.255.255 any
access-list 120 deny ip 127.0.0.0 0.255.255.255 any
access-list 120 deny udp any any eq netbios-ns
access-list 101 deny udp any any eq netbios-dgm
access-list 120 deny ospf any any
access-list 120 deny eigrp any any
access-list 120 deny igrp any any
access-list 120 permit tcp any any
access-list 120 permit udp any any
access-list 120 permit ip any any
dialer-list 1 protocol ip list 120
HTH, please rate.
cisand
05-24-2006 06:32 AM
Hi All,
After removing the ppp multilink from dialer interface the isdn started disconnecting when it exits the idle timeout.
The input given by you are very useful which avoid triggering the ISDN line from broadcast and multicast traffic.
Thanks for your reply.
Regards
Uvaraj.B
05-28-2006 12:32 AM
rather than putting the idle time out coommand on the dialer , put in the bri0 one::
bri0
dialer idle time out-50
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