Hi all,
I have 3 devices on an ethernet segment where all ethernet interfaces are in
the same vlan and ospf area 0
catalyst 3550 priority 0 rid 1.1.1.1
router5 priority 2 rid 55.55.55.55 BDR
router1 priority 3 rid 11.11.11.11 DR
The problem is that the switch keeps changing it's state. For example, from
the router 1 perspective I get the following:
( sh ip ospf nei command )
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 0 DOWN/DROTHER - 150.50.15.8 Ethernet0
55.55.55.55 2 FULL/BDR 00:00:35 150.50.15.5 Ethernet0
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 0 EXSTART/DROTHER 00:00:35 150.50.15.8 Ethernet0
55.55.55.55 2 FULL/BDR 00:00:38 150.50.15.5 Ethernet0
..and on and on, back and forth etc.
router 5 perspective:
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 0 EXSTART/DROTHER 00:00:38 150.50.15.8
Ethernet0/0
11.11.11.11 3 FULL/DR 00:00:30 150.50.15.1
Ethernet0/0
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 0 DOWN/DROTHER - 150.50.15.8
Ethernet0/0
11.11.11.11 3 FULL/DR 00:00:32 150.50.15.1
Ethernet0/0
.switch perspective:
Neighbor ID Pri State Dead Time Address Interface
55.55.55.55 2 INIT/DROTHER 00:00:33 150.50.15.5 Vlan15
11.11.11.11 3 INIT/DROTHER 00:00:39 150.50.15.1 Vlan15
Neighbor ID Pri State Dead Time Address Interface
55.55.55.55 2 INIT/DROTHER 00:00:37 150.50.15.5 Vlan15
11.11.11.11 3 EXCHANGE/DR 00:00:36 150.50.15.1 Vlan15
Neighbor ID Pri State Dead Time Address Interface
55.55.55.55 2 EXCHANGE/BDR 00:00:39 150.50.15.5 Vlan15
11.11.11.11 3 EXCHANGE/DR 00:00:39 150.50.15.1 Vlan15
So...it seems as though r1 and r5 are recognizing eachother's roles as dr
and bdr correctly. But they see the switch as down or init or exchange
DROTHER.
The switch however, sees itelf as DROTHER and r1/r5 as DROTHER or
init/exchange dr and bdr. Here is the output from "sh ip ospf int vlan15" on
the switch:
Vlan15 is up, line protocol is up
Internet Address 150.50.15.8/24, Area 0
Process ID 100, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DROTHER, Priority 0
No designated router on this network
No backup designated router on this network
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:07
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 0, maximum is 0
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 2, Adjacent neighbor count is 0
Suppress hello for 0 neighbor(s)
Then two seconds later....it changes...
Vlan15 is up, line protocol is up
Internet Address 150.50.15.8/24, Area 0
Process ID 100, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DROTHER, Priority 0
Designated Router (ID) 11.11.11.11, Interface address 150.50.15.1
Backup Designated router (ID) 55.55.55.55, Interface address 150.50.15.5
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:05
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 0, maximum is 0
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 2, Adjacent neighbor count is 0
Suppress hello for 0 neighbor(s)
Any ideas?
Thanks,
--
Dain Deutschman
CCNP, CSS-1, MCP, CNA
Data Communications Manager
New Star Sales and Service, Inc.
--
Dain Deutschman
CCNP, CSS-1, MCP, CNA
Data Communications Manager
New Star Sales and Service, Inc.
800.261.0475
[EMAIL PROTECTED]
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=72913&t=72874
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
