Below you'll find the FR switch configuration (important parts, anyway).
Also, s0.2 on R3 is a point-to-point PVC to another router (R6).
In the last hour, I've actually gotten the OSPF to work correctly by using
"ip ospf priority" statements. What was happening was that R4 (a spoke) was
always taking on the role of DR, and since R5 couldn't talk to R4, it wasn't
receiving any O routes. I've now made it so that R3 is always the DR. I
think a DR is necessary because it's a multipoint network - similar to an
ethernet network in an addressing sense.
However, I still have a problem - R5 can't ping R4. I've added map
statements to no avail. R5 knows all the routes, but either it's not
sending packets out its S0 interface, or R3 isn't routing them on R5's
behalf.
<ShamelessPlug> If anyone is interested in helping me troubleshoot this in
real time, join me on www.mcpmag.com's chat server! I'm in the
#CiscoGroupStudy room. </ShamelessPlug>
FR Switch config:
frame-relay switching
isdn switch-type basic-ni1
!
interface Loopback0
description 192.168.1.64 /30 (.67)
ip address 192.168.1.65 255.255.255.252
!
interface Serial0
description Frame Relay PVC 100,101,102
no ip address
encapsulation frame-relay
bandwidth 1544
clockrate 2000000
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 101 interface Serial1 101
frame-relay route 102 interface Serial2 102
frame-relay route 103 interface Serial3 103
!
interface Serial1
description Frame Relay PVC 100
no ip address
encapsulation frame-relay
bandwidth 1544
clockrate 2000000
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 101 interface Serial0 101
!
interface Serial2
description Frame-Relay PVC 101
no ip address
encapsulation frame-relay
clockrate 115200
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 102 interface Serial0 102
!
interface Serial3
description Frame-Relay PVC 102
no ip address
encapsulation frame-relay
clockrate 115200
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 103 interface Serial0 103
************************************
R3#sho ip ospf int s0.1
Serial0.1 is up, line protocol is up
Internet Address 10.0.0.3/24, Area 0
Process ID 1, Router ID 192.168.1.9, Network Type NON_BROADCAST, Cost: 64
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 192.168.1.9, Interface address 10.0.0.3
No backup designated router on this network
Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
Hello due in 00:00:13
Neighbor Count is 2, Adjacent neighbor count is 2
Adjacent with neighbor 10.0.0.5
Adjacent with neighbor 192.168.1.13
Suppress hello for 0 neighbor(s)
R4#sho ip ospf int s0.1
Serial0.1 is up, line protocol is up
Internet Address 10.0.0.4/24, Area 0
Process ID 1, Router ID 192.168.1.13, Network Type NON_BROADCAST, Cost: 64
Transmit Delay is 1 sec, State DROTHER, Priority 0
Designated Router (ID) 192.168.1.9, Interface address 10.0.0.3
No backup designated router on this network
Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
Hello due in 00:00:23
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 192.168.1.9 (Designated Router)
Suppress hello for 0 neighbor(s)
R5#sho ip ospf int s0.1
Serial0.1 is up, line protocol is up
Internet Address 10.0.0.5/24, Area 0
Process ID 1, Router ID 10.0.0.5, Network Type NON_BROADCAST, Cost: 64
Transmit Delay is 1 sec, State DROTHER, Priority 0
Designated Router (ID) 192.168.1.9, Interface address 10.0.0.3
No backup designated router on this network
Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
Hello due in 00:00:06
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 192.168.1.9 (Designated Router)
Suppress hello for 0 neighbor(s)
----- Original Message -----
From: Fred Danson
To: [EMAIL PROTECTED]
Sent: Saturday, March 31, 2001 3:16 PM
Subject: Re: OSPF over FR - stop me before my head starts bleeding
Hey Brad,
Could you please paste your frame-switch configuration in a reply? Also, one
thing that caught my eye was the formation of DR/BDRs in your lab. When you
have point to multipoint subinterfaces, there should not be any DR/BDRs.
Could you do a show ip ospf int s0.1 on R3, R4, and R5? Also, what is the
purpose of s0.2 on R3?
Fred - CCDA, CCNP
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