From: Hung, Sing-Yu (Sing-Yu.Hung@pccw.com)
Date: Mon Oct 21 2002 - 09:46:53 GMT-3
Think you quick advise.
Bradford Hung
> Pacific Century CyberWorks
> Tel: 288 33125
-----Original Message-----
From: Peter van Oene [mailto:pvo@usermail.com]
Sent: Monday, October 21, 2002 8:45 PM
To: Hung, Sing-Yu; ccielab@groupstudy.com
Subject: Re: ISIS
Sounds like you have DIS issues. It could be that R6 comes up initially as
DIS and via the CSNP/PSNP process pushes out r3's L2 LSP toward R5, however
when R3 comes up, it takes over the DIS position and since it cannot
communicate directly with R5, R5 never sees the R3 LSP(s). I expect to
trigger this you are resetting the neighbor at R3, which would indeed
allows one for R6 or R5 to become DR which would result in R3's LSP ending
up on both routers.
Either lower R3 and R5's DIS priority or raise 6's and see what happens.
Pete
At 05:46 PM 10/21/2002 +0800, Hung, Sing-Yu wrote:
>Hi,
>
> Below is my config.
>
> (lo10)r3(s0)-------r6(s0.2)-----------(s0)r5
>
> r6 is the hub and r3 and r5 is the spoke in the frame-relay
>network.And isis is enable in r3, r6 and r5.
>
>In the begining, r5 can see r3 lo10, however after few mins r3 lo10 will
>disappear in r5. Can anyone tell me why? And why it is L2 not L1?
>############################################################
>r3 config:
>clns routing
>interface Loopback10
> ip address 172.16.30.3 255.255.255.128
> ip router isis
> ip ospf network point-to-point
>interface Serial0
> ip address 172.16.100.3 255.255.255.224
> ip router isis
> encapsulation frame-relay
> ip ospf message-digest-key 100 md5 ccie100
> ip ospf network point-to-multipoint
> no fair-queue
> frame-relay map clns 103 broadcast
> frame-relay map dlsw 103
> frame-relay map ip 172.16.100.5 103 broadcast
> frame-relay map ip 172.16.100.6 103 broadcast
> frame-relay interface-dlci 103
> clns router isis
>!
>router isis
> net 01.0000.0000.0003.00
>############################################################
>r6 config:
>interface Serial0.2 multipoint
> ip address 172.16.100.6 255.255.255.224
> ip router isis
> ip pim sparse-dense-mode
> ip ospf message-digest-key 100 md5 ccie100
> ip ospf network point-to-multipoint
> frame-relay map clns 103 broadcast
> frame-relay map clns 101 broadcast
> frame-relay map dlsw 103
> frame-relay map ip 172.16.100.3 103 broadcast
> frame-relay map ip 172.16.100.5 101 broadcast
> frame-relay interface-dlci 101
> class 12k
> frame-relay interface-dlci 103
> class 24k
> clns router isis
> crypto map sec-1
>!
>router isis
> net 01.0000.0000.0006.00
>!
>############################################################
>r5 config:
>!
>interface Serial0
> ip address 172.16.100.5 255.255.255.224
> ip router isis
> encapsulation frame-relay
> ip ospf message-digest-key 100 md5 ccie100
> ip ospf network point-to-multipoint
> ip igmp join-group 224.1.1.1
> frame-relay map clns 101 broadcast
> frame-relay map ip 172.16.100.3 101 broadcast
> frame-relay map ip 172.16.100.6 101 broadcast
> frame-relay interface-dlci 101
> frame-relay lmi-type cisco
> clns router isis
>!
>router isis
> net 01.0000.0000.0005.00
>!
>############################################################
>
>
>
>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
>
> 172.16.0.0/16 is variably subnetted, 6 subnets, 5 masks
>C 172.16.135.0/28 is directly connected, Ethernet0
>C 172.16.56.0/29 is directly connected, Dialer0
>i L2 172.16.30.0/25 [115/30] via 172.16.100.6, Serial0
>C 172.16.5.0/24 is directly connected, Loopback0
>C 172.16.100.0/27 is directly connected, Serial0
>i L1 172.16.86.0/24 [115/20] via 172.16.100.6, Serial0
>r5#
>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
>
> 172.16.0.0/16 is variably subnetted, 5 subnets, 4 masks
>C 172.16.135.0/28 is directly connected, Ethernet0
>C 172.16.56.0/29 is directly connected, Dialer0
>C 172.16.5.0/24 is directly connected, Loopback0
>C 172.16.100.0/27 is directly connected, Serial0
>i L1 172.16.86.0/24 [115/20] via 172.16.100.6, Serial0
>
>Bradford Hung
>
> Pacific Century CyberWorks
> Tel: 288 33125
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