Orlando Palomar Jr CCIE#11206 wrote: > > You may want to know if RIP indeed does trigger the dialing. > So, to answer your 2nd question, use the command "debug dialer > packets" to give you a rundown if RIP is considered an > interesting traffic. If RIP is triggering your ISDN, you'll see > a debug output similar to the following: > > 07:34:30: BR0/0 DDR: ip (s=192.168.0.1, d=255.255.255.255), 52 > bytes, outgoing interesting (ip PERMIT)
How do you know that is RIP though? It could be any IP broadcast? Just being picky. Sorry! :-) A 52-byte RIPv1 packet would have a 20-byte IP header, an 8-byte UPP header, an 8-byte RIP header, and one route. So that could be a clue... Also, if RIPv1 is the only thing you have that uses 255.255.255.255, that could be a clue. > > OR > > 07:35:49: BR0/0 DDR: ip (s=192.168.0.1, d=224.0.0.9), 52 bytes, > outgoing interesting (ip PERMIT) That's a little more recognizable because of 225.0.0.9. But is RIPv2 the only thing that uses that? Just wondering.... Priscilla > > The first output is shown that RIPv1 is considered interesting > and is responsible for bringing up the ISDN line. The second > output is a simillar condition using RIPv2. > > Now, to block RIP, you will have to "instruct" the router that > RIP should not be treated as an interesting traffic. The way to > do that is to put an access-list that denies RIP and permit all > others on the dialer-list of the dialing router... Like so: > > access-list 101 deny udp any any eq rip > access-list 101 permit ip any any > dialer-list 1 protocol ip list 101 > > Doing a "debug dialer packets again would yield the following: > > 07:41:40: BR0/0 DDR: ip (s=192.168.0.1, d=255.255.255.255), 72 > bytes, outgoing uninteresting (list 101) > > OR for RIPv2 > > 07:43:22: BR0/0 DDR: ip (s=192.168.0.1, d=224.0.0.9), 52 bytes, > outgoing uninteresting (list 101) > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65500&t=65482 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
