Hello Group Study, Any ideas on why a router would show up twice in a trace route?
r1#trace 172.16.2.2 Type escape sequence to abort. Tracing the route to 172.16.2.2 1 172.16.1.3 12 msec 12 msec 12 msec 2 172.16.1.3 12 msec 8 msec 8 msec 3 172.16.2.2 24 msec 20 msec 20 msec It's a frame-relay hub-and-spoke topology. I'm on one spoke trying to trace to another spoke through the hub. The trace succeeds. The network is working, but what's with the router replying twice? (It happens if I go the other way too.) The hub router is 172.16.1.3. Why is it sending back the dest unreachable twice? The topology is: R1------R3-----R2 Here are my configs: r1 ip subnet-zero no ip icmp rate-limit unreachable ! interface Loopback0 ip address 192.168.255.1 255.255.255.255 ! interface Ethernet0/0 description to Cat 5K 3/1 ip address 10.10.1.1 255.255.255.0 half-duplex ! interface TokenRing0/0 description in ring 1 ip address 192.168.1.1 255.255.255.0 ring-speed 16 ! interface Serial1/0 ip address 172.16.1.1 255.255.255.0 encapsulation frame-relay ip ospf network point-to-point frame-relay interface-dlci 133 frame-relay lmi-type ansi ! router ospf 1 log-adjacency-changes network 10.10.1.0 0.0.0.255 area 0.0.0.0 network 172.16.0.0 0.0.255.255 area 0.0.0.0 network 192.168.1.0 0.0.0.255 area 0.0.0.0 network 192.168.255.1 0.0.0.0 area 0.0.0.0 ! ip classless R3 ip subnet-zero no ip icmp rate-limit unreachable ! interface Loopback0 ip address 192.168.255.3 255.255.255.255 ! interface Ethernet0/0 description link to cat5k 3/3 ip address 10.10.3.1 255.255.255.0 half-duplex ! interface Serial1/0 description Frame relay no ip address encapsulation frame-relay no fair-queue no frame-relay inverse-arp frame-relay lmi-type ansi ! interface Serial1/0.1 point-to-point description link to R1 ip address 172.16.1.3 255.255.255.0 ip ospf network point-to-point frame-relay interface-dlci 331 ! interface Serial1/0.2 point-to-point description link to R2 ip address 172.16.2.3 255.255.255.0 ip ospf network point-to-point frame-relay interface-dlci 332 ! router ospf 1 log-adjacency-changes network 10.10.3.0 0.0.0.255 area 0.0.0.0 network 172.16.0.0 0.0.255.255 area 0.0.0.0 network 192.168.255.3 0.0.0.0 area 0.0.0.0 ! ip classless R2 ! hostname r2 ! ip subnet-zero no ip icmp rate-limit unreachable ! interface Loopback0 ip address 192.168.255.2 255.255.255.255 ! interface Ethernet0/0 description to Cat 5K 3/2 ip address 10.10.2.1 255.255.255.0 half-duplex ! interface TokenRing0/0 ip address 192.168.2.1 255.255.255.0 ring-speed 16 ! interface Serial1/0 ip address 172.16.2.2 255.255.255.0 encapsulation frame-relay ip ospf network point-to-point no fair-queue frame-relay interface-dlci 233 frame-relay lmi-type ansi ! router ospf 1 log-adjacency-changes network 10.10.2.0 0.0.0.255 area 0.0.0.0 network 172.16.0.0 0.0.255.255 area 0.0.0.0 network 192.168.2.0 0.0.0.255 area 0.0.0.0 network 192.168.255.2 0.0.0.0 area 0.0.0.0 ip classless There's a Cisco router "in the cloud" acting as a Frame Relay switch, switching from DLCIs. I don't have its config. (This was a virtual lab). Thanks for any hints you can give me. Priscilla ________________________ Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=47625&t=47625 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
