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New Member

ISDN Dial Backup Bundled with Serial Interface

Hi All

I have a problem where i have a 512k serial line from a branch Office into my core. I have applied for additional bandwidth but can only get it later in the year due to Telco problems.

I have a PRI used for dial backup and dialin users, can i get the isdn to dial up and bundle with my primary link when a threshold is reached.

7 REPLIES
Silver

Re: ISDN Dial Backup Bundled with Serial Interface

Yes it is possible though performance wil be hit. You can use backup interface and backup load threshold which will trigger the backup when the threshold configured is reached.

HTH

New Member

Re: ISDN Dial Backup Bundled with Serial Interface

I have done that, it seems to acknowledge the fact that the interface needs to come up but it does not dial the interface up

Re: ISDN Dial Backup Bundled with Serial Interface

hi

Can you post the config of your router here (with public ips and passwds masked )?

regds

New Member

Re: ISDN Dial Backup Bundled with Serial Interface

interface Serial1/0:1

description lancet-jhb

mtu 600

bandwidth 512

backup interface Dialer1

backup load 20 10

ip address (ip address)

encapsulation ppp

ip mroute-cache

load-interval 30

no fair-queue

down-when-looped

no cdp enable

ppp multilink

interface Dialer1

description ISDN Dialup/Backup

no ip address

encapsulation ppp

dialer in-band

dialer idle-timeout 900

dialer string 70113580980

dialer-group 1

no peer default ip address

no fair-queue

no cdp enable

ppp authentication chap

ppp chap hostname PILLMAC

ppp chap password 7 ##############

ppp multilink

Silver

Re: ISDN Dial Backup Bundled with Serial Interface

1) Wonder why you need the multilink on the serial

2) Can you show the routes in the router ? The Route to Dialer should be of the same AD as the route to the Serial. THen it will dial out

New Member

Re: ISDN Dial Backup Bundled with Serial Interface

i accidently left it on i was going to put ppp multilink on the interface for Interleaving

ip route 172.16.0.0 255.255.0.0 192.168.2.5 100 - Serial

ip route 172.16.0.0 255.255.0.0 192.168.3.1 200 - Dialer

Should i have an ip address on my Dialer Interface or unnumbered

Silver

Re: ISDN Dial Backup Bundled with Serial Interface

I would suggest using the ip unnumbered if you are getting a static IP on the dialer. That is the reason why i think it isnt dialing out.

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