From: Marvin Greenlee (marvingreenlee@yahoo.com)
Date: Thu Dec 25 2003 - 01:19:10 GMT-3
The cost is determined by dividing the reference
bandwidth by the interface bandwidth.
Why would you want the VLAN to be the same bandwidth
as FE. What is wrong with a bandwidth of 1G? An
up/up gigabit port on a 3550 will show a b/w of 1G.
Sincerely,
Marvin Greenlee
--- k c <jwongccie@yahoo.com.hk> wrote:
> Sorry, I haven't checked the int vlan b/w default
> setting. It is 1000M. Do I need to change it to 100M
> to reflect the real cost of FE if the question
> doesn't mention?
>
> Switch1>sh int vlan 101
> Vlan101 is up, line protocol is up
> Hardware is EtherSVI, address is 000d.293e.1f00
> (bia 000d.293e.1f00)
> Internet address is 9.9.9.9/24
> MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
>
> k c <jwongccie@yahoo.com.hk> 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?
>
> interface FastEthernet0/17
> no switchport
> ip address 1.1.1.1 255.255.255.0
> end
> interface FastEthernet0/20
> switchport access vlan 101
> switchport mode dynamic desirable
> no ip address
> end
> interface Vlan101
> ip address 9.9.9.9 255.255.255.0
> end
>
> When auto-cost reference-bandwidth set to 1000
>
> Switch1#sh ip ospf int f0/17
> FastEthernet0/17 is up, line protocol is up
> (connected)
> Internet Address 1.1.1.1/24, Area 0
> Process ID 1, Router ID 218.102.19.174, Network
> Type BROADCAST, Cost: 10
> Switch1#sh ip ospf int vlan 101
> Vlan101 is up, line protocol is up
> Internet Address 9.9.9.9/24, Area 0
> Process ID 1, Router ID 218.102.19.174, Network
> Type BROADCAST, Cost: 1
> Transmit Delay is 1 sec, State DR, Priority 1
>
> When auto-cost reference-bandwidth set to 10000
>
> Switch1#sh ip ospf int f0/17
> FastEthernet0/17 is up, line protocol is up
> (connected)
> Internet Address 1.1.1.1/24, Area 0
> Process ID 1, Router ID 218.102.19.174, Network
> Type BROADCAST, Cost: 100
> Switch1#sh ip ospf int vlan 101
> Vlan101 is up, line protocol is up
> Internet Address 9.9.9.9/24, Area 0
> Process ID 1, Router ID 218.102.19.174, Network
> Type BROADCAST, Cost: 10
>
__________________________________
Do you Yahoo!?
Protect your identity with Yahoo! Mail AddressGuard
http://antispam.yahoo.com/whatsnewfree
This archive was generated by hypermail 2.1.4 : Sat Jan 03 2004 - 08:25:44 GMT-3