From: Li Wenhui (wenhui.li@xxxxxxxxxxxxxxxxxx)
Date: Mon Feb 11 2002 - 12:09:25 GMT-3
It seems that the switch port which connect to the R5 can't pass the
broadcast which rip and igrp use to send their routing table.
hope it help.
Thanks and Best regards
Li Wenhui
----------------------------------------------------------------
Li Wenhui
Senior Network Engineer
Datacraft (China) Guangzhou Ltd.
Room 5102-5103,CITIC Plaza 233 TianHe North Road,GuangZhou,China
tel: 86-20-38770770
Fax: 86-20-87520583
email:wenhui.li@datacraft-asia.com
mobile:13802966594
--------------------------------------------------------------
----- Original Message -----
From: "sherry huies" <cholscurry@yahoo.co.kr>
To: <ccielab@groupstudy.com>
Sent: Monday, February 11, 2002 9:57 PM
Subject: problem between ISL and RIP,IGRP with config(again)
> Hi all,
>
> I have a problem on catalyst ISL Trunk problem.
> my R5-router's loopback0 is 175.3.5.0/24.
> R5 is connected to R6 via Fastethernet(175.3.56.5/24)
> R6's interface is a Fastethernet Trunking(ISL)0/1.10
>
> between R5 and R6, if i run OSPF or EIGRP,
> R6's routing table is good.
> that is R6 has the 175.3.5.0 on its routing table.
>
> but, if i run RIP or IGRP between R5 and R6,
> R6 doesn't have the 175.3.5.0 on its routing table.
>
> of course, R6 has the 175.3.5.0 in a short time.
> but after a while, 175.3.5.0 is possibly down
> and disappeared on R6 routing table.
>
> so when i try to debug on R5 and R6,
> R5 continue to send the 175.3.5.0 to R6,
> but, on R6, the receiving debug message dose not show.
>
>
> If i change the R6's ISL FastEthernet
> to main FastEthernet
> all routing protocol(including RIP,IGRP) is good.
>
> is there any problem between ISL and RIP,IGRP?
> Any suggestions on what I am doing wrong?
>
> =======================================================
> R5#sh run
> interface Loopback0
> ip address 175.3.5.5 255.255.255.0
>
> interface FastEthernet0/0
> ip address 175.3.56.5 255.255.255.0
>
> router igrp 500
> network 175.3.0.0
>
> Rack01R5#sh ip route
> Gateway of last resort is not set
> C 175.3.5.0 is directly connected, Loopback0
> C 175.3.56.0 is directly connected,
> FastEthernet0/0
> I 175.3.6.0 [100/610] via 175.3.56.6,
> 00:01:06, FastEthernet0/0
> =======================================================
> R6#sh run
> interface Serial0/0
> ip address 175.3.6.5 255.255.255.0
>
> interface FastEthernet0/1
> no ip address
>
> interface FastEthernet0/1.10
> encapsulation isl 10
> ip address 175.3.56.6 255.255.255.0
> !
> interface FastEthernet0/1.20
> encapsulation isl 20
> no ip address
>
> router igrp 500
> network 175.3.0.0
>
> R6#sh ip route
> Gateway of last resort is not set
> C 175.3.6.0/24 is directly connected,Serial0/0
> C 175.3.56.0/24 is directly connected,
> FastEthernet0/1.10
> I 175.3.5.0/24 [100/610] via 175.3.56.5,
> 00:00:00, FastEthernet0/1.10
> =======================================================
>
> 2~~~3 minute later R6's table
>
> R6#sh ip route
> Gateway of last resort is not set
> C 175.3.6.0/24 is directly connected,Serial0/0
> C 175.3.56.0/24 is drectly connected,
> FastEthernet0/1.10
>
> I 175.3.5.0/24 is possibly down,
> routing via 175.3.56.5, FastEthernet0/1.10
> ======================================================
>
> if i change the R6's ISL interface to main interface,
> this problem is disappeared at once.
>
> Of course, OSPF and EIGRP have no problem under same
> configuration(ISL).
>
> why doesn't R6 receive IGRP,RIP update packet?
> R6 receive very well OSPF hello packet
> if i try to debug ip ospf hello.
>
>
This archive was generated by hypermail 2.1.4 : Thu Jun 20 2002 - 13:46:18 GMT-3