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Community Member

Multiple adsl links

I have a 3725 router with 3 seperate atm interfaces connecting to 3 seperate ADSL lines all supplied by the same ISP each ADSL line has a static IP address and all the lines are on the same PVC. I want to use one line for internet access and the other two for point to point. I have setup three virtual-templates and associated each ATM interface with a virtual-template. My problem is the default gateway, when the router boots it sets up three virtual-access interfaces one for each virtual-template., the next hop router is the same on each virtual-access, when my router boots it associates this next hop router as directly connected with the first virtual-access interface to get established. So if i use this next hop router as my default gateway and the internet virtual-access interface is not first to be established, it will send the data out the wrong interface. I have tried putting the default-gateway as the virtual-template but this doesn't seem to work. Anyone come across this or am i doing something silly?

Community Member

Re: Multiple adsl links

I think i've sussed this by using ACL's on the interfaces to limit what traffic's allowed where. Sometimes a fresh mind in the morning is what you need. I'm new to this so any info is welcome as i probably going about it the wrong way!

Community Member

Re: Multiple adsl links

Hi ,

Yes you need access-list but at different scenario. I suggest you to use PBR (Policy Based Routing).

This is source based routing technique, allows you which subnet should take which gateway. These URLs would address your requirement

Good Luck,


Community Member

Re: Multiple adsl links

Thanks for that Dinesh, i found another solution as well that works, using dialer interfaces instead of virtual-template interfaces. With the dialer interfaces i can use the command "ip route dialer1" which i couldn't with the virtual-templates. So now i can direct traffic via interfaces rather than next hop router which solves my problem.

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