From: Jonathan Hays (nomad@gfoyle.org)
Date: Thu Dec 25 2003 - 09:13:26 GMT-3
you wrote:
Hi group,
It is stange that the auto-cost ref-bw is different for vlan and
router-port. Any idea? By default, vlan reference to 1000M and router
port reference to 100M?
= = =
It would have been helpful if you had included your OSPF configuration
in your posts.
I configured a simple OSPF configuration on a catalyst 3550, with one
VLAN and one routed interface in OSPF. I did not change the auto-cost
reference-bandwidth from the default (100 Mbps). From what I can see the
reference bandwidth is the same for both VLANs and router ports. See
below.
What are you doing to achieve those strange results? (Or maybe I just
don't understand what you are saying...)
Please clarify,
Jonathan
CAT1#sh ip int brief | exclude unassigned
Interface IP-Address OK? Method Status
Protocol
Vlan11 139.10.11.10 YES manual up
up
FastEthernet0/23 139.10.12.10 YES manual up
up
CAT1#
CAT1#sh run | begin router ospf 1
router ospf 1
log-adjacency-changes
network 139.10.11.10 0.0.0.0 area 0
network 139.10.12.10 0.0.0.0 area 0
!
CAT1#sh ip ospf interface
Vlan11 is up, line protocol is up
Internet Address 139.10.11.10/24, Area 0
Process ID 1, Router ID 139.10.10.1, Network Type BROADCAST, Cost: 1
<==
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 139.10.10.1, Interface address 139.10.11.10
No backup designated router on this network
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 0, Adjacent neighbor count is 0
Suppress hello for 0 neighbor(s)
FastEthernet0/23 is up, line protocol is up (connected)
Internet Address 139.10.12.10/24, Area 0
Process ID 1, Router ID 139.10.10.1, Network Type BROADCAST, Cost: 1
<==
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 139.10.10.1, Interface address 139.10.12.10
No backup designated router on this network
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:00
Index 2/2, 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 0, Adjacent neighbor count is 0
Suppress hello for 0 neighbor(s)
CAT1#
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