Frame Relay and Trace Route

From: Rahmlow, Howard F. (howard.rahmlow@xxxxxxxxxx)
Date: Tue Nov 09 1999 - 12:24:59 GMT-3


   
I'm using a 4500 router as a Frame switch, with 3 routers as end points. The
Frame is fully meshed. Using the setup very close to Caslow pg 138.
Everything works fine, I can ping all the ip address, and telnet from one
router to the next with no problems. When I do a trace route, if the address
is not a connected router. The trace seems to bounce around.

Example
R2501#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
       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, * - candidate
default
       U - per-user static route, o - ODR

Gateway of last resort is not set

     172.16.0.0/24 is subnetted, 3 subnets
C 172.16.1.0 is directly connected, Serial1.2
O 172.16.2.0 [110/128] via 172.16.1.2, 3d19h, Serial1.2
                   [110/128] via 172.16.3.2, 3d19h, Serial1.3
C 172.16.3.0 is directly connected, Serial1.3
R2501#trace 172.16.2.1

Type escape sequence to abort.
Tracing the route to 172.16.2.1

  1 172.16.3.2 4 msec
    172.16.1.2 8 msec
    172.16.3.2 8 msec
R2501#

As you can see it goes to 172.16.3.2, then to 172.16.1.2, then back to
172.16.3.2

Any ideas, am I missing something, I don't think its normal. I get the same
resault with OSPF, RIP, EIGRP ect..I also have reloaded all the routers a
few times, and get the same thing.

Thanks
Howard



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