08-02-2006 08:29 PM
I have been using ISDN as a backup link.But I can see only 64kbps,it means it is using only one channel.Please tell me how can I use both channel(128 Kbps)?
08-02-2006 09:30 PM
Hi
(1)Can You post the config for both the sides?
(2)Idelly bundling can be achieved through "ppp multilink" command.
Regards
JD
08-02-2006 10:46 PM
Hi
Here is the configuration..
!
no crypto isakmp ccm
!
!
!
interface Loopback0
ip address 10.10.10.1 255.255.255.255
!
interface FastEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 172.16.0.20 255.255.255.0
no ip mroute-cache
ip ospf message-digest-key 1 md5 xxx
duplex auto
speed auto
!
interface BRI0/0/0
bandwidth 128
ip address 172.20.1.1 255.255.255.0
encapsulation ppp
no ip route-cache cef
no ip route-cache
no ip mroute-cache
dialer idle-timeout 30
dialer map ip 172.20.1.2 broadcast 4432913
dialer load-threshold 1 outbound
dialer-group 1
isdn switch-type basic-net3
isdn point-to-point-setup
ppp multilink
!
interface Serial0/1/0
no ip address
shutdown
clockrate 2000000
!
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
network 10.10.10.1 0.0.0.0 area 0
network 172.16.0.20 0.0.0.0 area 0
network 172.20.1.1 0.0.0.0 area 0
!
ip classless
ip route 10.10.10.2 255.255.255.255 172.20.1.2 200
ip route 172.16.16.0 255.255.255.0 172.20.1.2 200
!
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 5 life 86400 requests 10000
!
access-list 101 deny ospf any any
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101
!
!
!
line con 0
login local
line aux 0
line vty 0 4
privilege level 15
password xxx
login local
transport input telnet ssh
line vty 5 15
privilege level 15
login local
transport input telnet ssh
!
end
#remote
##########################################################################################
!
!
!
no ftp-server write-enable
isdn switch-type basic-net3
!
!
!
interface Loopback0
ip address 10.10.10.2 255.255.255.255
!
interface FastEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
ip address 172.16.16.210 255.255.255.0
ip ospf message-digest-key 1 md5 xxx
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface BRI0/0/0
bandwidth 128
ip address 172.20.1.2 255.255.255.0
encapsulation ppp
dialer-group 1
isdn switch-type basic-net3
isdn point-to-point-setup
ppp multilink
!
!
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
network 10.10.10.2 0.0.0.0 area 0
network 172.16.16.210 0.0.0.0 area 0
network 172.20.1.2 0.0.0.0 area 0
!
ip classless
ip route 10.10.10.1 255.255.255.255 172.20.1.1 200
ip route 172.16.0.0 255.255.255.0 172.20.1.1 200
ip route 172.16.1.10 255.255.255.255 172.20.1.1 200
!
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 5 life 86400 requests 10000
!
dialer-list 1 protocol ip permit
!
!
c
-----------------------------------------------------------------------
^C
!
!
end
singha#
08-02-2006 11:06 PM
hi
I see the dialer load threshold command missing at the remote end which may be the reason over here for not getting the channels up.
Also do confirm whether you are using one of the channels for any other purpose predominantly for voice in any of these locations ?that may also end up in usage of only one channel though you have 2 in the physical line.
regds
08-03-2006 01:13 AM
Hi
I agree with other poster.Pls check it.
Regards
JD
08-03-2006 01:34 AM
Hi Ishwar,
The ISDN BRI comes in many flavors, for instance it could be that the vendor who is supplying you the connection is actually giving you only 1B+1D instead of 2B+1D.
So I would be recommending that, to use the following link for guidence http://www.cisco.com/en/US/tech/tk801/tk379/technologies_tech_note09186a0080094b7a.shtml
Also, if the issue is still pending may I request you to paste the output from debug ISDN q931 to understand whats really going on.
Please rate if it helps.
Kind Regards,
Wilson Samuel
08-03-2006 02:19 AM
Hello,
in addition to the other posts, what IOS version are you running ? This could also be a bug, there are quite a few of them regarding PPP multilink.
You also might want to try and set you dialer load-threshold to:
dialer load-threshold 5 either
There can be an issue when you set the value to 1, due to both lines coming up at the same time, which might cause contention, and which could lead to failure on one or both B-channels...
Regards,
GNT
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