From: Dillon Yang (gzdillon@hotmail.com)
Date: Sat Mar 05 2005 - 12:51:02 GMT-3
Thanks for your fast reply.
I do know "redistribute conn" under ISIS, but I want to eliminate unnecessary disturbing routes.
Now the 4 nodes can perform well without 3.3.24.0 link, and loop with 3.3.24.0 link. I have to resolve it for a formular redistribution.
dillon
----- Original Message -----
From: <Jongsoo.Kim@Intelsat.com>
To: <gzdillon@hotmail.com>
Cc: <ccielab@groupstudy.com>
Sent: Saturday, March 05, 2005 11:32 PM
Subject: RE: Redistribution in 3 protocols
> Yang
>
> I saw some problems.
>
> In R2 and R4, you are not announcing 3.3.24.0/24 to R3 and R6.
> When you redistribute ISIS to other protocols, I believe it behaves a little
> different.
> Other protocol will redistribute all ISIS route except for
> directly-connected ISIS, which is the case of 3.3.24.0/24 here.
> And believe or not, this is default behavior of Ipv6 redistribution.
>
> So your route-map for connect should also permit 3o.3.24.0/24.
>
> Let me know how it goes.
>
> Regards
>
>
> Jongsoo
>
>
>
> -----Original Message-----
> From: Dillon Yang [mailto:gzdillon@hotmail.com]
> Sent: Saturday, March 05, 2005 7:38 AM
> To: ccie2be
> Cc: Group Study
> Subject: Re: Redistribution in 3 protocols
>
>
> Hi, all:
>
> I'm doing a loop+loadbalance test with full-mesh.
> There are 3 version:
>
> YangTestV1# 3nodes+1protocol
> You know, the IGP use the lowest cost path to prevent loops, meanwhile it
> waste the bandwidth of other links. My original intention is obtaining the
> most bandwidth sum of all links just like eigrp's non-equal balance. I
> successed in the case with static route.
>
> YangTestV2# 4nodes+1protocol
> The topology is too complex to finish with static route.
>
> YangTestV3# 4nodes+3protocol
> ( all nodes are full mesh in each )
> I met the big trouble in redistribution though I tried the "distance",
> "route-map".
> I want help to resolve the loops.
> Thanks in advance.
> dillon
>
> ps.
>
> neighborhood of YangTestV3
>
> r2: e0/0 to testing pc
> r2: s1/1.203 r3 ospf
> r2: s1/2.214 r4 isis
> r2: s1/2.216 r6 ospf
> r3: s0/0.302 r2 ospf
> r3: s0/0.304 r4 eigrp
> r3: s0/0.306 r6 ospf
> r4: s1/1.403 r3 eigrp
> r4: s1/1.406 r6 eigrp
> r4: s1/2.412 r2 isis
> r4: f0/0 to testing pc
> r6: s1.612 r2 ospf
> r6: s0.603 r3 ospf
> r6: s0.604 r4 eigrp
>
> Configuration of YangTestV3
> !
> hostname r2
> !
> interface Loopback0
> ip address 3.3.2.2 255.255.255.0
> ip ospf network point-to-point
> !
> interface Ethernet0/0
> ip address 3.3.28.2 255.255.255.0
> !
> interface Serial1/1.203 multipoint
> bandwidth 125
> ip address 3.3.23.2 255.255.255.0
> ip ospf priority 0
> delay 100
> frame-relay map ip 3.3.23.3 203 broadcast
> no frame-relay inverse-arp
> !
> interface Serial1/2.214 multipoint
> bandwidth 125
> ip address 3.3.24.2 255.255.255.0
> ip router isis is24
> delay 100
> isis metric 60 level-2
> frame-relay map clns 214 broadcast
> frame-relay map ip 3.3.24.4 214 broadcast
> no frame-relay inverse-arp
> !
> interface Serial1/2.216 multipoint
> bandwidth 125
> ip address 3.3.26.2 255.255.255.0
> ip ospf priority 0
> delay 100
> frame-relay map ip 3.3.26.6 216 broadcast
> no frame-relay inverse-arp
> !
> router ospf 3
> router-id 3.3.2.2
> log-adjacency-changes
> redistribute connected subnets route-map conn2ospf
> redistribute isis is24 level-2 subnets
> network 3.3.2.2 0.0.0.0 area 0
> network 3.3.23.2 0.0.0.0 area 0
> network 3.3.26.2 0.0.0.0 area 26
> !
> router isis is24
> net 47.0001.2222.2222.2222.00
> is-type level-2-only
> redistribute ospf 3
> !
> ip prefix-list conn28 seq 5 permit 3.3.28.0/24
> !
> route-map conn2ospf permit 10
> match ip address prefix-list conn28
> set metric 2000
> !
> end
>
> r2#s ip route
> 3.0.0.0/24 is subnetted, 11 subnets
> C 3.3.2.0 is directly connected, Loopback0
> O 3.3.3.0 [110/801] via 3.3.23.3, 00:50:11, Serial1/1.203
> O E2 3.3.4.0 [110/20] via 3.3.26.6, 00:07:19, Serial1/2.216
> [110/20] via 3.3.23.3, 00:07:19, Serial1/1.203
> O IA 3.3.6.0 [110/1601] via 3.3.23.3, 00:14:53, Serial1/1.203
> C 3.3.23.0 is directly connected, Serial1/1.203
> C 3.3.24.0 is directly connected, Serial1/2.214 <-------changed
> C 3.3.26.0 is directly connected, Serial1/2.216
> C 3.3.28.0 is directly connected, Ethernet0/0
> O E2 3.3.34.0 [110/20] via 3.3.23.3, 00:14:54, Serial1/1.203
> [110/20] via 3.3.26.6, 00:14:54, Serial1/2.216
> O IA 3.3.36.0 [110/1600] via 3.3.23.3, 00:14:54, Serial1/1.203
> O E2 3.3.46.0 [110/20] via 3.3.26.6, 00:07:21, Serial1/2.216
> [110/20] via 3.3.23.3, 00:07:21, Serial1/1.203
> 150.100.0.0/24 is subnetted, 1 subnets
> O E2 150.100.2.0 [110/20] via 3.3.26.6, 00:07:21, Serial1/2.216
> [110/20] via 3.3.23.3, 00:07:21, Serial1/1.203
> < after shutdown link between R2 and R4 >
> r2#s ip route
> 3.0.0.0/24 is subnetted, 10 subnets
> C 3.3.2.0 is directly connected, Loopback0
> O 3.3.3.0 [110/801] via 3.3.23.3, 00:54:42, Serial1/1.203
> O E2 3.3.4.0 [110/20] via 3.3.26.6, 00:11:50, Serial1/2.216
> [110/20] via 3.3.23.3, 00:11:50, Serial1/1.203
> O IA 3.3.6.0 [110/1601] via 3.3.23.3, 00:19:25, Serial1/1.203
> C 3.3.23.0 is directly connected, Serial1/1.203
> C 3.3.26.0 is directly connected, Serial1/2.216
> C 3.3.28.0 is directly connected, Ethernet0/0
> O E2 3.3.34.0 [110/20] via 3.3.23.3, 00:19:26, Serial1/1.203
> [110/20] via 3.3.26.6, 00:19:26, Serial1/2.216
> O IA 3.3.36.0 [110/1600] via 3.3.23.3, 00:19:26, Serial1/1.203
> O E2 3.3.46.0 [110/20] via 3.3.26.6, 00:11:51, Serial1/2.216
> [110/20] via 3.3.23.3, 00:11:51, Serial1/1.203
> 150.100.0.0/24 is subnetted, 1 subnets
> O E2 150.100.2.0 [110/20] via 3.3.26.6, 00:11:52, Serial1/2.216
> [110/20] via 3.3.23.3, 00:11:52, Serial1/1.203
> !
> hostname r3
> interface Loopback0
> ip address 3.3.3.3 255.255.255.0
> ip ospf network point-to-point
> !
> interface Serial0.302 multipoint
> bandwidth 125
> ip address 3.3.23.3 255.255.255.0
> delay 100
> frame-relay map ip 3.3.23.2 302 broadcast
> no frame-relay inverse-arp
> !
> interface Serial0.304 multipoint
> bandwidth 125
> ip address 3.3.34.3 255.255.255.0
> delay 100
> frame-relay map ip 3.3.34.4 304 broadcast
> no frame-relay inverse-arp
> !
> interface Serial0.306 multipoint
> bandwidth 125
> ip address 3.3.36.3 255.255.255.0
> delay 100
> frame-relay map ip 3.3.36.6 306 broadcast
> no frame-relay inverse-arp
> !
> router eigrp 3
> redistribute ospf 3 metric 100 100 255 1 1500
> network 3.3.34.3 0.0.0.0
> distance 111 3.3.46.6 0.0.0.0 66
> no auto-summary
> !
> router ospf 3
> router-id 3.3.3.3
> log-adjacency-changes
> redistribute eigrp 3 subnets
> network 3.3.3.3 0.0.0.0 area 0
> network 3.3.23.3 0.0.0.0 area 0
> network 3.3.36.3 0.0.0.0 area 36
> neighbor 3.3.23.2
> neighbor 3.3.36.6
> distance 171 3.3.6.6 0.0.0.0 66
> !
> access-list 33 deny 3.3.3.0 0.0.0.255
> access-list 33 deny 3.3.23.0 0.0.0.255
> access-list 33 deny 3.3.34.0 0.0.0.255
> access-list 33 permit any
> access-list 66 deny 3.3.46.0 0.0.0.255
> access-list 66 permit any
> end
>
> r3#s ip route
> 3.0.0.0/24 is subnetted, 10 subnets
> O 3.3.2.0 [110/801] via 3.3.23.2, 00:47:33, Serial0.302
> C 3.3.3.0 is directly connected, Loopback0
> D 3.3.4.0 [90/20633600] via 3.3.34.4, 00:12:35, Serial0.304
> D 3.3.6.0 [90/20659200] via 3.3.34.4, 00:12:35, Serial0.304
> C 3.3.23.0 is directly connected, Serial0.302
> D 3.3.26.0 [90/20556800] via 3.3.34.4, 00:12:35, Serial0.304
> O E2 3.3.28.0 [110/2000] via 3.3.23.2, 00:20:04, Serial0.302
> C 3.3.34.0 is directly connected, Serial0.304
> C 3.3.36.0 is directly connected, Serial0.306
> D 3.3.46.0 [90/20531200] via 3.3.34.4, 00:12:36, Serial0.304
> 150.100.0.0/24 is subnetted, 1 subnets
> D EX 150.100.2.0 [170/20531200] via 3.3.34.4, 00:12:36, Serial0.304
>
> < after shutdown link between R2 and R4 , no change >
>
> 3.0.0.0/24 is subnetted, 10 subnets
> O 3.3.2.0 [110/801] via 3.3.23.2, 00:35:00, Serial0.302
> C 3.3.3.0 is directly connected, Loopback0
> D 3.3.4.0 [90/20633600] via 3.3.34.4, 00:00:02, Serial0.304
> D 3.3.6.0 [90/20659200] via 3.3.34.4, 00:00:02, Serial0.304
> C 3.3.23.0 is directly connected, Serial0.302
> D 3.3.26.0 [90/20556800] via 3.3.34.4, 00:00:02, Serial0.304
> O E2 3.3.28.0 [110/2000] via 3.3.23.2, 00:07:32, Serial0.302
> C 3.3.34.0 is directly connected, Serial0.304
> C 3.3.36.0 is directly connected, Serial0.306
> D 3.3.46.0 [90/20531200] via 3.3.34.4, 00:00:03, Serial0.304
> 150.100.0.0/24 is subnetted, 1 subnets
> D EX 150.100.2.0 [170/20531200] via 3.3.34.4, 00:00:03, Serial0.304
>
> !
> hostname r4
> !
> interface Loopback0
> ip address 3.3.4.4 255.255.255.0
> !
> interface FastEthernet0/0
> ip address 150.100.2.3 255.255.255.0
> !
> interface Serial1/1.403 multipoint
> bandwidth 125
> ip address 3.3.34.4 255.255.255.0
> delay 100
> frame-relay map ip 3.3.34.3 403 broadcast
> no frame-relay inverse-arp
> !
> interface Serial1/1.406 multipoint
> bandwidth 125
> ip address 3.3.46.4 255.255.255.0
> delay 100
> frame-relay map ip 3.3.46.6 406 broadcast
> no frame-relay inverse-arp
> !
> interface Serial1/2.412 multipoint
> bandwidth 125
> ip address 3.3.24.4 255.255.255.0
> ip router isis is24
> delay 100
> isis metric 60 level-2
> frame-relay map clns 412 broadcast
> frame-relay map ip 3.3.24.2 412 broadcast
> no frame-relay inverse-arp
> !
> router eigrp 3
> redistribute connected metric 1000 100 255 1 1500 route-map conn150
> redistribute isis is24 level-2 metric 100 100 255 1 1500 <-no policy to
> generate loop
> network 3.3.4.4 0.0.0.0
> network 3.3.34.4 0.0.0.0
> network 3.3.46.4 0.0.0.0
> no auto-summary
> !
> ip prefix-list conn150 seq 5 permit 150.100.2.0/24
> route-map conn150 permit 10
> match ip address prefix-list conn150
> !
> end
>
> r4#s ip rou
> 3.0.0.0/24 is subnetted, 11 subnets
> i L2 3.3.2.0 [115/60] via 3.3.24.2, Serial1/2.412
> i L2 3.3.3.0 [115/60] via 3.3.24.2, Serial1/2.412 <--------loop here
> C 3.3.4.0 is directly connected, Loopback0
> D 3.3.6.0 [90/20633600] via 3.3.46.6, 00:08:56, Serial1/1.406
> i L2 3.3.23.0 [115/60] via 3.3.24.2, Serial1/2.412 <--------loop here
> C 3.3.24.0 is directly connected, Serial1/2.412
> D 3.3.26.0 [90/20531200] via 3.3.46.6, 00:08:58, Serial1/1.406
> D EX 3.3.28.0 [170/25651200] via 3.3.46.6, 00:04:56, Serial1/1.406
> [170/25651200] via 3.3.34.3, 00:04:57, Serial1/1.403
> C 3.3.34.0 is directly connected, Serial1/1.403
> D 3.3.36.0 [90/20531200] via 3.3.46.6, 00:04:57, Serial1/1.406
> C 3.3.46.0 is directly connected, Serial1/1.406
> 150.100.0.0/24 is subnetted, 1 subnets
> C 150.100.2.0 is directly connected, FastEthernet0/0
>
> r4#traceroute 3.3.3.3
> Type escape sequence to abort.
> Tracing the route to 3.3.3.3
>
> 1 3.3.24.2 20 msec 20 msec 16 msec
> 2 3.3.24.2 20 msec 20 msec 20 msec
> 3 * * *
> 4 * * * <---problem
> 5 * * *
> 6 * * *
> r4#tr ip
> Target IP address: 3.3.28.2
> Source address: 150.100.2.3
> Numeric display [n]:
> Timeout in seconds [3]:
> Probe count [3]:
> Minimum Time to Live [1]:
> Maximum Time to Live [30]:
> Port Number [33434]:
> Loose, Strict, Record, Timestamp, Verbose[none]:
> Type escape sequence to abort.
> Tracing the route to 3.3.28.2
>
> 1 3.3.46.6 16 msec
> 3.3.34.3 20 msec
> 3.3.46.6 16 msec
> 2 3.3.34.3 20 msec
> 3.3.46.6 20 msec
> 3.3.34.3 20 msec
> 3 3.3.26.2 36 msec
> 3.3.23.2 44 msec *
> r4#
> < after shutdown link between R2 and R4 >
> r4#s ip route
> Codes: C - connected, S - static, 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
> 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
>
> 3.0.0.0/24 is subnetted, 10 subnets
> D EX 3.3.2.0 [170/25651200] via 3.3.34.3, 00:01:23, Serial1/1.403
> [170/25651200] via 3.3.46.6, 00:01:23, Serial1/1.406
> D EX 3.3.3.0 [170/25651200] via 3.3.34.3, 00:01:23, Serial1/1.403
> [170/25651200] via 3.3.46.6, 00:01:23, Serial1/1.406
> C 3.3.4.0 is directly connected, Loopback0
> D 3.3.6.0 [90/20633600] via 3.3.46.6, 00:15:24, Serial1/1.406
> D EX 3.3.23.0 [170/25651200] via 3.3.34.3, 00:01:23, Serial1/1.403
> [170/25651200] via 3.3.46.6, 00:01:24, Serial1/1.406
> D 3.3.26.0 [90/20531200] via 3.3.46.6, 00:15:28, Serial1/1.406
> D EX 3.3.28.0 [170/25651200] via 3.3.46.6, 00:11:26, Serial1/1.406
> [170/25651200] via 3.3.34.3, 00:11:26, Serial1/1.403
> C 3.3.34.0 is directly connected, Serial1/1.403
> D 3.3.36.0 [90/20531200] via 3.3.46.6, 00:11:26, Serial1/1.406
> C 3.3.46.0 is directly connected, Serial1/1.406
> 150.100.0.0/24 is subnetted, 1 subnets
> C 150.100.2.0 is directly connected, FastEthernet0/0
> !
> hostname r6
> !
> interface Loopback0
> ip address 3.3.6.6 255.255.255.0
> ip ospf network point-to-point
> !
> interface Serial0.603 multipoint
> bandwidth 125
> ip address 3.3.36.6 255.255.255.0
> no ip directed-broadcast
> ip ospf priority 0
> delay 100
> frame-relay map ip 3.3.36.3 603 broadcast
> no frame-relay inverse-arp
> !
> interface Serial0.604 multipoint
> bandwidth 125
> ip address 3.3.46.6 255.255.255.0
> no ip directed-broadcast
> delay 100
> frame-relay map ip 3.3.46.4 604 broadcast
> no frame-relay inverse-arp
> !
> interface Serial1.612 multipoint
> bandwidth 125
> ip address 3.3.26.6 255.255.255.0
> no ip directed-broadcast
> delay 100
> frame-relay map ip 3.3.26.2 612 broadcast
> no frame-relay inverse-arp
> !
> router eigrp 3
> redistribute ospf 3 metric 100 100 255 1 1500
> passive-interface default
> no passive-interface Loopback0
> no passive-interface Serial0.604
> network 3.0.0.0
> distance 111 3.3.46.4 0.0.0.0 33
> eigrp log-neighbor-changes
> !
> router ospf 3
> router-id 3.3.6.6
> log-adjacency-changes
> redistribute eigrp 3 subnets
> network 3.3.6.6 0.0.0.0 area 36
> network 3.3.26.6 0.0.0.0 area 26
> network 3.3.36.6 0.0.0.0 area 36
> neighbor 3.3.26.2
> distance 171 3.3.3.3 0.0.0.0 33
> !
> access-list 33 deny 3.3.3.0 0.0.0.255
> access-list 33 deny 3.3.23.0 0.0.0.255
> access-list 33 deny 3.3.34.0 0.0.0.255
> access-list 33 permit any
> access-list 66 deny 3.3.26.0 0.0.0.255
> access-list 66 deny 3.3.6.0 0.0.0.255
> access-list 66 deny 3.3.46.0 0.0.0.255
> access-list 66 deny 3.3.36.0 0.0.0.255
> access-list 66 permit any
> !
> end
>
> r6#
> r6#s ip route
> 3.0.0.0/24 is subnetted, 10 subnets
> O IA 3.3.2.0 [110/801] via 3.3.26.2, 00:15:42, Serial1.612
> O IA 3.3.3.0 [110/801] via 3.3.36.3, 00:15:43, Serial0.603
> D 3.3.4.0 [111/20633600] via 3.3.46.4, 00:17:09, Serial0.604
> C 3.3.6.0 is directly connected, Loopback0
> O IA 3.3.23.0 [110/1600] via 3.3.36.3, 00:15:43, Serial0.603
> [110/1600] via 3.3.26.2, 00:15:43, Serial1.612
> C 3.3.26.0 is directly connected, Serial1.612
> O E2 3.3.28.0 [110/2000] via 3.3.26.2, 00:15:43, Serial1.612
> D 3.3.34.0 [90/20531200] via 3.3.46.4, 00:17:09, Serial0.604
> C 3.3.36.0 is directly connected, Serial0.603
> C 3.3.46.0 is directly connected, Serial0.604
> 150.100.0.0/24 is subnetted, 1 subnets
> D EX 150.100.2.0 [170/20531200] via 3.3.46.4, 00:11:58, Serial0.604
> r6#
> < after shutdown link between R2 and R4 , no change >
>
> r6#s ip route
> 3.0.0.0/24 is subnetted, 10 subnets
> O IA 3.3.2.0 [110/801] via 3.3.26.2, 00:19:45, Serial1.612
> O IA 3.3.3.0 [110/801] via 3.3.36.3, 00:19:45, Serial0.603
> D 3.3.4.0 [111/20633600] via 3.3.46.4, 00:21:12, Serial0.604
> C 3.3.6.0 is directly connected, Loopback0
> O IA 3.3.23.0 [110/1600] via 3.3.36.3, 00:19:45, Serial0.603
> [110/1600] via 3.3.26.2, 00:19:45, Serial1.612
> C 3.3.26.0 is directly connected, Serial1.612
> O E2 3.3.28.0 [110/2000] via 3.3.26.2, 00:19:45, Serial1.612
> D 3.3.34.0 [90/20531200] via 3.3.46.4, 00:21:12, Serial0.604
> C 3.3.36.0 is directly connected, Serial0.603
> C 3.3.46.0 is directly connected, Serial0.604
> 150.100.0.0/24 is subnetted, 1 subnets
> D EX 150.100.2.0 [170/20531200] via 3.3.46.4, 00:16:01, Serial0.604
>
> ----- Original Message -----
> From: "ccie2be" <ccie2be@nyc.rr.com>
> To: "'Dillon Yang'" <gzdillon@hotmail.com>; "'Group Study'"
> <ccielab@groupstudy.com>
> Sent: Friday, March 04, 2005 11:58 PM
> Subject: RE: Redistribution in 3 protocols
>
>
> > Dillon,
> >
> > GS people could help you better if you posted your config's and the output
> > of some show ip route commands.
> >
> > But, in general, it's a good idea to clear your ip route tables after
> making
> > routing configuration changes. Sometimes, that clears up an apparent
> > problem.
> >
> > HTH, Tim
> >
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Dillon Yang
> > Sent: Friday, March 04, 2005 10:43 AM
> > To: Group Study
> > Subject: Redistribution in 3 protocols
> >
> > Hi, dear all:
> >
> >
> > I'm confused by this topology:
> >
> > |ospf----------(s0/1)R3(s0/2)-----------isis-
> > | | ospf |
> > | | |
> > | |------eigrp------R1(s0/2)---------isis| |
> > | | | |
> > (1)(2) (s0/1)(s0/2)
> >
> R2(3)-----eigrp-----------------------(s0/1)R4------150.100.2.3-------Ethern
> > et
> >
> >
> > Though I shutdown the e0 of R4, the address 150.100.2.0/24 is still seen
> in
> > the 3 protocol.
> > I can not prevent routing loop in the case by using "distance xxx
> > address/mask <acl>".
> > Any advice?
> >
> > dillon
> >
> > _______________________________________________________________________
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