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Using dialers with more than one physical interface

Hi,

I have a router which dials a central site with 2 ISDN lines (4 B channels). If the highest interface (BRI 1/1) becomes disconnected/faulty the other wont connect at all.

When the two lines are plugged in and working OK I notice that the dialer starts with the highest BRI first and works its way down the interfaces. If the first one doesn't come up neither do any others. How can I make this happen so I at least get 128K in a possible fault scenario. If I admin down the bri1/1, 1/0 come up no probs. Its only when the line is at fault or the cable is unplugged I see this problem.

IOS 12.2(8)T4

Thanks.

Here's my config:

interface BRI1/0

no ip address

ip pim sparse-dense-mode

encapsulation ppp

dialer rotary-group 0

dialer-group 1

isdn switch-type basic-net3

no cdp enable

!

interface BRI1/1

no ip address

ip pim sparse-dense-mode

encapsulation ppp

dialer rotary-group 0

dialer-group 1

isdn switch-type basic-net3

no cdp enable

!

interface Dialer0

ip address x.x.x.x x.x.x.x

ip pim sparse-dense-mode

encapsulation ppp

load-interval 30

dialer in-band

dialer idle-timeout 300

dialer map ip x.x.x.x name xxxxx broadcast 123456

dialer load-threshold 1 either

dialer-group 1

no cdp enable

ppp authentication chap

ppp multilink

ppp timeout multilink link add 1

1 REPLY
Bronze

Re: Using dialers with more than one physical interface

See if you can use the 'dialer priority' and 'dialer rotor' commands given at http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/dial_r/drdrd.htm

You can also try using dialer profiles instead if that is an option that you can consider.

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