ISDN bonding problem

[ciscopix77]

Hi all

I have a 3com router, but am hoping someone here would help me out with this problem. we have 3 isdn lines (2 channels each) and when I try to bind two isdn channels to get 128k of bandwidth, I can dial into the router and it says 128k connected, but nothing happens. I cannot browse the internet, but funnily enough I can ping webpages! When I dial in using only one channel it works fine! I created the config so as to have 3 separate dialers for the 3 isdn lines. This is the config it has on:

Current configuration
!
3Com Router Software V1.30
local-user xxxx service-type ppp password simple xxxx
local-user xxx service-type ftp password simple xxxx local-user xxxxx service-type ppp password simple xxxxxx sysname xxxxxxxx
ppp mp binding-mode authentication
dialer-rule 1 ip permit
info-center console
firewall enable
aaa-enable
aaa accounting-scheme optional
ftp-server enable
!
acl 2000 match-order auto
rule normal permit source any
!
interface Aux0
async mode flow
link-protocol ppp
!
interface Ethernet0
ip address 192.168.1.40 255.255.255.0
nat outbound 2000 interface

!
interface Serial0
link-protocol ppp
!
interface Bri0
link-protocol ppp
ppp authentication-mode pap
ppp mp
isdn service data
isdn service speech
dialer enable-circular
dialer-group 1
dialer circular-group 0
!
interface Bri1
link-protocol ppp
ppp authentication-mode pap
ppp mp
isdn service data
isdn service speech
dialer enable-circular
dialer-group 1
dialer circular-group 1
!
interface Bri2
link-protocol ppp
ppp authentication-mode pap
ppp mp
isdn service data
isdn service speech
dialer enable-circular
dialer-group 1
dialer circular-group 2
!
interface Bri3
link-protocol ppp
ppp authentication-mode pap
ppp mp
isdn service data
isdn service speech
dialer enable-circular
dialer-group 1
dialer circular-group 3
!
interface Dialer0
link-protocol ppp
ppp authentication-mode pap
ppp mp
ppp mp max-bind 2
ip address 10.10.10.1 255.255.255.0
dialer enable-circular
dialer-group 1
dialer number ""
!
interface Dialer1
link-protocol ppp
ppp authentication-mode pap
ppp mp
ppp mp max-bind 2
ip address 10.10.11.1 255.255.255.0
dialer enable-circular
dialer-group 1
dialer number ""
!
interface Dialer2
link-protocol ppp
ppp authentication-mode pap
ppp mp
ppp mp max-bind 2
ip address 10.10.12.1 255.255.255.0
dialer enable-circular
dialer-group 1
dialer number ""
!
interface Dialer3
link-protocol ppp
ppp authentication-mode pap
ppp mp
ppp mp max-bind 2
ip address 10.10.13.1 255.255.255.0
dialer enable-circular
dialer-group 1
dialer number ""

!
quit
ip route-static 0.0.0.0 0.0.0.0 192.168.1.1 preference 60
ip route-static 192.168.5.6 255.255.255.255 Dialer 0 preference 60
ip route-static 192.168.5.7 255.255.255.255 Dialer 1 preference 60
ip route-static 192.168.5.8 255.255.255.255 Dialer 2 preference 60
ip route-static 192.168.5.9 255.255.255.255 Dialer 3 preference 60
!
return


It seems like its a bonding problem?? Any ideas as to what might be causing this?

 

[KiscoKid]

My first inclination is that it's probably a bug in multilink. On Cisco devices, I've seen a few issues with multilink in the past.

Things I would look at would be:

1. Consider upgrading this router.
2. Confirm if necessary what you are dialing into. Is it a single access server or a pool of access servers. If a pool, check that MultiChassis Multilink PPP is correctly configured and operating correctly.
3. Try the connection again but with just one dialer interface. I don't think you need to create 3 dialers as you've done. All the BRI's belong to one dialer group only anyway so one dialer interface should suffice.

 

[ciscopix77]

Hi

Thanks for the reply...I have checked the 3com website and unfortunately for me we have the newest version of the ios. I have tried it with one dialer, it works but ony allows access of one user at a time with 64k connection. I was hoping that more than one user can connect at a time (using one channel).

Any ideas?

Thanks

 

[ciscopix77]

Anyone??