Whats the Adv of On-Demand routing ?

[cisco]

rgd

Neo

[pkhatri]

Assuming that you are referring to DDR and not ODR: in the context of links where you pay per-minute (e.g. ISDN links), it is advantageous to only bring up the line when you need to send data over it and not when you only when you want to send routing updates over it. That's where dial on-demand routing helps...

Paresh

[cisco]

Hi Paresh ,

I am talking abt ODR only :)

regards

Neo

[pkhatri]

Ok,

ODR is a very simple routing protocol and very easy to configure (only configured on hub routers) and that's what its advantage is, compared to traditional distance vector and link-state protocols. The disadvantages, of course, are many:

- it's Cisco proprietary

- it needs CDP to run

- it is effective in hub and spoke environments only...

Paresh

[cisco]

Hi Paresh ,

Any link for ODR.

regards

Neo

[pkhatri]

Here's a link with a bunch of documents regarding ODR:

http://www.cisco.com/en/US/tech/tk365/tk810/tsd_technology_support_sub-protocol_home.html

Paresh

PS. Pls do rate posts

[pnschurr]

There's nothing actually "on-demand" about ODR.

It's main benefit WAS very low processing, simple to configure, next-to-zero maintainense. You could run it on the smallest and cheapest devices, blah blah.

It is dead, and I know one place that still uses it sparsely on the fringes of an EIGRP network in Australia.

peter