r6 was generating the route to 24.0.0.0/8 fine but as soon as I configured the "ip broadcast-adress 172.16.56.1" then as you can see in the original message, the route stopped getting learnt and was about to timeout.
What I was thinking would happen is that R6 instead of sending a broadcast to 255.255.255.255 for r5 to hear, that I would be able to send a "direct broadcast" right to 172.16.56.1 (e0 address of r5) and then it would process it and understand it. Anyone? Tim -----Original Message----- From: Ouellette, Tim [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 30, 2002 10:07 PM To: '[EMAIL PROTECTED]' Subject: RIP Broadcast issues and NBMA stuff. ? directed-broadcast? Team, after reading some interesting documents on Cisco. I "discovered" the "ip broadcast-address" command. I instantly though of "NBMA broadcast issues". I thought this command would be usefull. I did use plain ethernet in the following scenario just to test but I would think it would work in other scenarions. Here's the scenarion. R5 has some other network "hanging" off it, including 192.168.1.0/24, 10.1.1.0/24 and R6 has 24.0.0.0/8 off of it. Rather than have r6 broadcast to 255.255.255.255 on the ethernet segment, I issued a "ip broadcast-address 172.16.51.1" which is more of a unicast type packet but I figured that the R5 would take this update without a problem. R5 (.1)----------172.16.56.0/30 --------------(.2) R6 r6(config)#int e0 r6(config-if)#ip broadcast-address 172.16.56.1 ? r6(config-if)#ip broadcast-address 172.16.56.1 r6# %SYS-5-CONFIG_I: Configured from console by consolesh ip int e0 Ethernet0 is up, line protocol is up Internet address is 172.16.56.2/30 Broadcast address is 172.16.56.1 Address determined by setup command MTU is 1500 bytes r6# IP: s=172.16.56.2 (local), d=172.16.56.1 (Ethernet0), len 25, sending broad/mult icast UDP src=520, dst=520 As you can see, R6 is sending the update to 172.16.56.1 which is the ip address of the e0 interface of r5. However, r5 isn't liking the update and the routing table looks like the following. r5#r Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route Gateway of last resort is not set 172.16.0.0/30 is subnetted, 1 subnets C 172.16.56.0 is directly connected, Ethernet0/0 R 24.0.0.0/8 [120/1] via 172.16.56.2, 00:01:54, Ethernet0/0 10.0.0.0/24 is subnetted, 1 subnets C 10.1.1.0 is directly connected, Loopback1 C 192.168.1.0/24 is directly connected, Loopback0 r5# Does anyone have any ideas? Tim _________________________________________________________________ Commercial lab list: http://www.groupstudy.com/list/commercial.html Please discuss commercial lab solutions on this list. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=50237&t=50237 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
