From: Albert Lu (albert_ccie@xxxxxxxxx)
Date: Sun Nov 11 2001 - 18:30:20 GMT-3
Hello All,
What can I say?? I give up!! Could someone please take a look at my configs
and tell me why my 200.0.0.0/24 route is going into hold down?
Basically, the 2 routers that are involved in this are R2 and R4 with R2
running EIGRP and IGRP, and R4 running IGRP only. R2 has a 200.0.0.2/32
loopback being redistributed from EIGRP into IGRP and towards R4. R4 has a
200.0.0.4/32 loopback being redistributed connected into IGRP on R4.
I've filtered out the propagation of the 200.0.0.4/32 route into IGRP as can
be seen in the deny_200 route-map on R2, so the only router that should be
getting any 200.0.0.0 routes should be R2 seeing R4's loopback of
200.0.0.4/32 (seen as a 200.0.0.0/24 on R4). However, this 200.0.0.0/24 is
being sent back to R4 after R2 goes into hold down for the 200.0.0.0/24
route.
I've been working on this problem for too long. Please help!!
Thanks in advance
Albert
R2 Config
--------------
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R2
!
logging buffered 55000 debugging
enable password cisco
!
!
!
!
!
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
cns event-service server
!
!
!
!
!
!
!
!
!
interface Loopback0
ip address 200.0.0.2 255.255.255.255
!
interface Ethernet0/0
ip address 150.50.17.2 255.255.255.0
half-duplex
!
interface Serial0/0
no ip address
encapsulation frame-relay
no fair-queue
!
interface Serial0/0.1 point-to-point
ip address 150.50.24.2 255.255.255.0
ip summary-address eigrp 1 150.50.100.0 255.255.255.0 5
ip summary-address eigrp 1 150.50.7.0 255.255.255.0 5
ip summary-address eigrp 1 150.50.5.0 255.255.255.0 5
no arp frame-relay
frame-relay interface-dlci 104
!
interface Serial0/0.2 multipoint
ip address 150.50.100.2 255.255.255.224
ip hello-interval eigrp 1 20
ip hold-time eigrp 1 60
frame-relay interface-dlci 105
frame-relay interface-dlci 106
!
interface TokenRing0/0
no ip address
shutdown
ring-speed 16
!
interface ATM1/0
no ip address
shutdown
atm vc-per-vp 4096
no atm ilmi-keepalive
!
router eigrp 1
redistribute igrp 2 metric 1000 100 255 1 1500
passive-interface Serial0/0.1
passive-interface Loopback0
network 150.50.0.0
network 200.0.0.2 0.0.0.0
no auto-summary
no eigrp log-neighbor-changes
!
router igrp 2
timers basic 5 15 20 30
redistribute eigrp 1 metric 1000 100 255 1 1500 route-map deny_200
passive-interface Ethernet0/0
passive-interface Serial0/0.2
network 150.50.0.0
!
ip classless
ip http server
!
access-list 1 deny 200.0.0.0 0.0.0.255
access-list 1 permit any
route-map deny_200 permit 10
match ip address 1
!
!
R4 Config
---------
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R4
!
logging buffered 55000 debugging
enable secret 5 $1$a4Gk$e21ITX3LOKrRnMlIeVILY1
enable password cisco
!
!
!
!
!
ip subnet-zero
ip tcp synwait-time 5
no ip domain-lookup
!
cns event-service server
!
!
!
!
!
!
!
!
!
interface Loopback0
ip address 200.0.0.4 255.255.255.255
!
interface Loopback1
ip address 10.1.1.4 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0
ip address 150.50.24.4 255.255.255.0
encapsulation frame-relay
ip split-horizon
no fair-queue
frame-relay map ip 150.50.24.2 401 broadcast
no frame-relay inverse-arp
!
interface Serial0/1
no ip address
shutdown
!
router igrp 2
timers basic 5 15 20 30
redistribute connected
network 150.50.0.0
!
ip classless
no ip http server
!
R2#sh ip ro
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
200.0.0.0/32 is subnetted, 6 subnets
D EX 200.0.0.8 [170/297784576] via 150.50.100.5, 00:03:19, Serial0/0.2
[170/297784576] via 150.50.100.6, 00:03:19, Serial0/0.2
D EX 200.0.0.1 [170/2611200] via 150.50.17.1, 00:03:19, Ethernet0/0
C 200.0.0.2 is directly connected, Loopback0
D EX 200.0.0.5 [170/3097600] via 150.50.100.5, 00:03:19, Serial0/0.2
D EX 200.0.0.6 [170/3097600] via 150.50.100.6, 00:03:19, Serial0/0.2
D EX 200.0.0.7 [170/3100160] via 150.50.100.5, 00:03:19, Serial0/0.2
[170/3100160] via 150.50.100.6, 00:03:20, Serial0/0.2
173.16.0.0/22 is subnetted, 1 subnets
D 173.16.0.0 [90/2300416] via 150.50.100.5, 00:03:20, Serial0/0.2
[90/2300416] via 150.50.100.6, 00:03:20, Serial0/0.2
150.50.0.0/16 is variably subnetted, 12 subnets, 3 masks
D 150.50.200.0/24 [90/409600] via 150.50.17.1, 00:03:22, Ethernet0/0
D 150.50.4.0/24 [90/297886976] via 150.50.100.5, 00:03:22, Serial0/0.2
[90/297886976] via 150.50.100.6, 00:03:22, Serial0/0.2
D 150.50.5.0/25 [90/297758976] via 150.50.100.5, 00:03:22, Serial0/0.2
[90/297758976] via 150.50.100.6, 00:03:22, Serial0/0.2
D 150.50.5.0/24 is a summary, 00:03:22, Null0
D 150.50.7.0/25 [90/2172416] via 150.50.100.5, 00:03:22, Serial0/0.2
[90/2172416] via 150.50.100.6, 00:03:22, Serial0/0.2
D 150.50.7.0/24 is a summary, 00:03:22, Null0
D 150.50.3.0/24 [90/297886976] via 150.50.100.5, 00:03:22, Serial0/0.2
[90/297886976] via 150.50.100.6, 00:03:22, Serial0/0.2
C 150.50.17.0/24 is directly connected, Ethernet0/0
D 150.50.18.0/24 [90/409600] via 150.50.17.1, 00:03:22, Ethernet0/0
C 150.50.24.0/24 is directly connected, Serial0/0.1
D 150.50.100.0/24 is a summary, 00:03:24, Null0
C 150.50.100.0/27 is directly connected, Serial0/0.2
R2#
09:31:16: RT: network 200.0.0.0 is now variably masked
09:31:16: RT: add 200.0.0.0/24 via 150.50.24.4, igrp metric [100/8976]
09:31:16: RT: add 10.0.0.0/8 via 150.50.24.4, igrp metric [100/8976]
R2#
09:31:31: RT: flushed route to 200.0.0.0 via 150.50.24.4 (Serial0/0.1)
09:31:31: RT: no routes to 200.0.0.0, entering holddown
R2#
09:31:49: RT: garbage collecting entry for 200.0.0.0
R2#
09:31:51: RT: network 200.0.0.0 is now variably masked
09:31:51: RT: add 200.0.0.0/24 via 150.50.24.4, igrp metric [100/8976]
R2#
09:32:08: RT: flushed route to 200.0.0.0 via 150.50.24.4 (Serial0/0.1)
09:32:08: RT: no routes to 200.0.0.0, entering holddown
R2#
09:32:25: RT: garbage collecting entry for 200.0.0.0
R2#
09:32:26: RT: network 200.0.0.0 is now variably masked
09:32:26: RT: add 200.0.0.0/24 via 150.50.24.4, igrp metric [100/8976]
R2#
09:32:43: RT: flushed route to 200.0.0.0 via 150.50.24.4 (Serial0/0.1)
09:32:43: RT: no routes to 200.0.0.0, entering holddown
R2#
09:32:57: RT: garbage collecting entry for 200.0.0.0
09:32:57: RT: network 200.0.0.0 is now variably masked
09:32:57: RT: add 200.0.0.0/24 via 150.50.24.4, igrp metric [100/8976]
R2#
09:33:15: RT: flushed route to 200.0.0.0 via 150.50.24.4 (Serial0/0.1)
09:33:15: RT: no routes to 200.0.0.0, entering holddown
R2#
09:33:29: RT: garbage collecting entry for 200.0.0.0
09:33:29: RT: network 200.0.0.0 is now variably masked
09:33:29: RT: add 200.0.0.0/24 via 150.50.24.4, igrp metric [100/8976]
R2#
09:33:46: RT: flushed route to 200.0.0.0 via 150.50.24.4 (Serial0/0.1)
09:33:46: RT: no routes to 200.0.0.0, entering holddown
R2#
09:34:00: RT: garbage collecting entry for 200.0.0.0
R2#
09:34:01: RT: network 200.0.0.0 is now variably masked
09:34:01: RT: add 200.0.0.0/24 via 150.50.24.4, igrp metric [100/8976]
R2#
09:34:18: RT: flushed route to 200.0.0.0 via 150.50.24.4 (Serial0/0.1)
09:34:18: RT: no routes to 200.0.0.0, entering holddown
R2#
09:34:33: RT: garbage collecting entry for 200.0.0.0
09:34:33: RT: network 200.0.0.0 is now variably masked
09:34:33: RT: add 200.0.0.0/24 via 150.50.24.4, igrp metric [100/8976]
R2#
R4#sh ip ro
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
200.0.0.0/32 is subnetted, 1 subnets
C 200.0.0.4 is directly connected, Loopback0
I 173.16.0.0/16 [100/10986] via 150.50.24.2, 00:00:02, Serial0/0
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Loopback1
150.50.0.0/24 is subnetted, 9 subnets
I 150.50.200.0 [100/9076] via 150.50.24.2, 00:00:02, Serial0/0
I 150.50.4.0 [100/1165621] via 150.50.24.2, 00:00:02, Serial0/0
I 150.50.5.0 [100/1165121] via 150.50.24.2, 00:00:02, Serial0/0
I 150.50.7.0 [100/10486] via 150.50.24.2, 00:00:03, Serial0/0
I 150.50.3.0 [100/1165621] via 150.50.24.2, 00:00:03, Serial0/0
I 150.50.17.0 [100/8576] via 150.50.24.2, 00:00:03, Serial0/0
I 150.50.18.0 [100/9076] via 150.50.24.2, 00:00:03, Serial0/0
R4#
09:32:00: RT: network 200.0.0.0 is now variably masked
09:32:00: RT: add 200.0.0.0/24 via 150.50.24.2, igrp metric [100/8976]
R4#
09:32:19: RT: flushed route to 200.0.0.0 via 150.50.24.2 (Serial0/0)
09:32:19: RT: no routes to 200.0.0.0, entering holddown
R4#
09:32:33: RT: garbage collecting entry for 200.0.0.0
R4#
09:32:36: RT: network 200.0.0.0 is now variably masked
09:32:36: RT: add 200.0.0.0/24 via 150.50.24.2, igrp metric [100/8976]
R4#
09:32:54: RT: flushed route to 200.0.0.0 via 150.50.24.2 (Serial0/0)
09:32:54: RT: no routes to 200.0.0.0, entering holddown
R4#
09:33:08: RT: garbage collecting entry for 200.0.0.0
R4#
09:33:11: RT: network 200.0.0.0 is now variably masked
09:33:11: RT: add 200.0.0.0/24 via 150.50.24.2, igrp metric [100/8976]
R4#
09:33:30: RT: flushed route to 200.0.0.0 via 150.50.24.2 (Serial0/0)
09:33:30: RT: no routes to 200.0.0.0, entering holddown
R4#
09:33:43: RT: garbage collecting entry for 200.0.0.0
09:33:43: RT: network 200.0.0.0 is now variably masked
09:33:43: RT: add 200.0.0.0/24 via 150.50.24.2, igrp metric [100/8976]
R4#
09:34:02: RT: flushed route to 200.0.0.0 via 150.50.24.2 (Serial0/0)
09:34:02: RT: no routes to 200.0.0.0, entering holddown
R4#
09:34:16: RT: garbage collecting entry for 200.0.0.0
R4#
09:34:19: RT: network 200.0.0.0 is now variably masked
09:34:19: RT: add 200.0.0.0/24 via 150.50.24.2, igrp metric [100/8976]
R4#
09:34:35: RT: flushed route to 200.0.0.0 via 150.50.24.2 (Serial0/0)
09:34:35: RT: no routes to 200.0.0.0, entering holddown
R4#
09:34:53: RT: garbage collecting entry for 200.0.0.0
R4#
09:34:57: RT: network 200.0.0.0 is now variably masked
09:34:57: RT: add 200.0.0.0/24 via 150.50.24.2, igrp metric [100/8976]
R4#
09:35:16: RT: flushed route to 200.0.0.0 via 150.50.24.2 (Serial0/0)
09:35:16: RT: no routes to 200.0.0.0, entering holddown
R4#
09:35:29: RT: garbage collecting entry for 200.0.0.0
R4#
09:35:50: RT: network 200.0.0.0 is now variably masked
09:35:50: RT: add 200.0.0.0/24 via 150.50.24.2, igrp metric [100/8976]
R4#
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