At 06:27 PM 3/6/02, Jerry P. wrote:
>When I added a network 154.1.1.0 to router r1 pinged it and shut it down
>this is what r3 did:
>
>r3#debug ip routing
>IP routing debugging is on
>r3#
>05:25:49: RT: del 154.1.0.0 via 193.1.1.1, rip metric [120/2]
>05:25:49: RT: delete network route to 154.1.0.0
Did it do this right away? Also what did the routing table show? You can
also do a specific lookup by doing "show ip route 154.1.0.0." Also, can you
do a "show ip protocol." Here's what my R3 shows. What does your show?
r3#show ip protocol
Routing Protocol is "rip"
Sending updates every 30 seconds, next due in 24 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Redistributing: rip
Routing for Networks:
192.168.30.0
193.1.1.0
Routing Information Sources:
Gateway Distance Last Update
193.1.1.1 120 0:00:04
Distance: (default is 120)
All I can say is that I tried to reproduce your problem of the route not
going into holddown, and I couldn't. On my ancient routers running IOS 11.0
and RIPv1, the route goes into holddown on R3 and R2. This happens whether
I disconnect the cable on R1 or shut down its Ethernet interface 1. Using
an analyzer, I see that R1 sends a triggered update listing 154.1.0.0 as 16
hops away out its e0 interface (the one connected to R2 in my lab). R1 does
this immediately when I do a shutdown. It takes a while when I yank the
cable.
And here's what I see on R3:
(ALL IS FINE AT FIRST)
r3#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
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, * - candidate
default
Gateway of last resort is not set
R 3.0.0.0 [120/2] via 193.1.1.1, 00:00:26, Serial0
C 192.168.30.0 is directly connected, Ethernet0
R 154.1.0.0 [120/2] via 193.1.1.1, 00:00:26, Serial0
R 192.1.1.0 [120/1] via 193.1.1.1, 00:00:27, Serial0
C 193.1.1.0 is directly connected, Serial0
r3#debug ip routing
IP routing debugging is on
(I YANKED THE CABLE ON R1 HERE)
r3#
RT: delete route to 154.1.0.0 via 193.1.1.1, rip metric [120/2]
RT: no routes to 154.1.0.0, entering holddown
r3#show ip route 154.1.0.0
Routing entry for 154.1.0.0 255.255.0.0
Known via "rip", distance 120, metric 4294967295 (inaccessible)
Redistributing via rip
Advertised by rip (self originated)
Last update from 193.1.1.1 on Serial0, 00:02:02 ago
Hold down timer expires in 72 secs
r3#show ip route 154.1.0.0
Routing entry for 154.1.0.0 255.255.0.0
Known via "rip", distance 120, metric 4294967295 (inaccessible)
Redistributing via rip
Advertised by rip (self originated)
Last update from 193.1.1.1 on Serial0, 00:03:21 ago
Hold down timer expires in 0 secs
r3#
RT: 154.1.0.0 came out of holddown
r3#
(I PUT THE CABLE BACK ON R1 HERE)
RT: add 154.1.0.0 255.255.0.0 via 193.1.1.1, rip metric [120/2]
r3#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
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, * - candidate
default
Gateway of last resort is not set
R 3.0.0.0 [120/2] via 193.1.1.1, 00:00:08, Serial0
C 192.168.30.0 is directly connected, Ethernet0
R 154.1.0.0 [120/2] via 193.1.1.1, 00:00:08, Serial0
R 192.1.1.0 [120/1] via 193.1.1.1, 00:00:09, Serial0
C 193.1.1.0 is directly connected, Serial0
r3#
(I MOVED CONSOLE CABLE TO R1 HERE)
r1#config t
Enter configuration commands, one per line. End with CNTL/Z.
r1(config)#int e1
r1(config-if)#shut
r1(config-if)#
(I MOVED THE CONSOLE CABLE BACK TO R3 HERE)
r3#
r3#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
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, * - candidate
default
Gateway of last resort is not set
R 3.0.0.0 [120/2] via 193.1.1.1, 00:00:11, Serial0
C 192.168.30.0 is directly connected, Ethernet0
R 154.1.0.0 is possibly down, routing via 193.1.1.1, Serial0
R 192.1.1.0 [120/1] via 193.1.1.1, 00:00:12, Serial0
C 193.1.1.0 is directly connected, Serial0
r3#show ip route 154.1.0.0
Routing entry for 154.1.0.0 255.255.0.0
Known via "rip", distance 120, metric 4294967295 (inaccessible)
Redistributing via rip
Advertised by rip (self originated)
Last update from 193.1.1.1 on Serial0, 00:00:30 ago
Hold down timer expires in 157 secs
So...... that's all I can tell you. It works on my routers, but they are
ancient. ;-)
Priscilla
>I have ethernet connections from r1 to r2 using a crossover cable.
>
>Jerry
________________________
Priscilla Oppenheimer
http://www.priscilla.com
Message Posted at:
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