Your absolute best resource is "Cisco LAN Switching" by Clark and Hamilton,
Cisco Press ISBN 1-57870-094-9 Chapter 7. Run to your local book store and
buy it.
Does your boss have pointy hair?
1) mtu is maximum transmission unit. 1500 is the default for ethernet.
SAID, Security Association Identifier. Cisco adds 100,000 to the VLAN number
to create the SAID value. VLAN 1 = 11
You have three active ethernet VLANs
The FDDI and Token Ring VLANs are defaults and most likely not used.
2) sc0 1 means that the "virtual PC" that holds the IP stack is in VLAN 1
(which is default).
sc0 vlan#, ip address, subnet mask, broadcast address
3) spantree priority default is 32768. 16384 may make this switch the root
switch (for the VLAN in question. If no VLAN is specified then VLAN 1.) Do a
"show spantree #" Where # is each VLAN. if you see "Designated Root Cost" at
0 then that switch is the root for that VLAN.
4 & 5) Don't have time to look it up. They did some tuning with the values.
You'll have to look at all the switches to figure out what was intended.
Create a drawing of the physical network. Map each VLAN individually unless
all the values on all the VLANs are the same.
6) "off negotiate" means that a trunk can never be established on this link.
7) MLS only works if you have a Supervisor III E-2 or above with NFFC (open
to correction on this one) and you have an internal routing function RSM
card or RSFC or have an external router with MLS configured. If you have it
working, someone went through the effort to create it. Don't change it until
you know what was intended and why it should be changed.
> -Original Message-
> From: Richard spalding [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, February 08, 2001 12:11 PM
> To: [EMAIL PROTECTED]
> Subject: various catalyst5505 syntax question..help as much
> as you can!
>
>
> Hi...Dear All,
>
> Recently, we just took over the administrator of catalyst
> 5505 switches, my
> boss want me give me a full report on this switches in two
> days time. But I
> don't understand some of the syntax. Pls help as much as you
> can even you
> may only one of the question , welcome to contribute..
>
> 1) What is mean by the following, how many vlan are there??
> what is mean by
> mtu 1500 said 11 ?
>
> #vtp
> set vtp domain TOTO
> set vlan 1 name default type ethernet mtu 1500 said 11
> state active
> set vlan 2 name VLAN0002 type ethernet mtu 1500 said 12
> state active
> set vlan 3 name VLAN0003 type ethernet mtu 1500 said 13
> state active
> set vlan 1002 name fddi-default type fddi mtu 1500 said
> 101002 state active
> set vlan 1004 name fddinet-default type fddinet mtu 1500 said
> 101004 state
> activ
> e stp ieee
> set vlan 1005 name trnet-default type trbrf mtu 1500 said
> 101005 state
> active st
> p ibm
> set vlan 1003 name token-ring-default type trcrf mtu 1500
> said 101003 state
> acti
> ve mode srb aremaxhop 0 stemaxhop 0 backupcrf off
> !
>
>
> 2)Which interface is sc0 refer to? I know this represent IP
> of the switches,
> but any secial meaning of sc0 1 ???
> set interface sc0 1 50.200.45.252/255.255.255.0 50.200.45.255
>
> 3)why vlan1,2,3 setting is different from vlan1003,1005??
> what is mean by
> spantree priority 16384?? why vlan1002,1004 not specify
> here? not in use??
>
> #spantree
> #vlan 1
> set spantree priority 16384 1
> #vlan 2
> set spantree priority 16384 2
> #vlan 3
> set spantree priority 16384 3
> #vlan 1003
> set spantree fwddelay 151003
> set spantree maxage 201003
> #vlan 1005
> set spantree fwddelay 151005
> set spantree maxage 201005set spantree portcost1/1 3006
>
> 4)What is the different between portcost and portvlancost?
> why the value
> different??
>
> set spantree portcost1/1 3006
> set spantree portcost1/2 3019
> set spantree portvlancost 1/1 cost 3005
> set spantree portvlancost 1/2 cost 3018
>
> 5)What is mean by portpri? cost 3004 4-8,11-15 what is mean??
> #module 2 : 1-port Route Switch
> set spantree portcost2/1 3005
> set spantree portpri 2/1 15
> set spantree portvlancost 2/1 cost 3004 4-8,11-15
>
> 6)what is mean by trunk 3/5 off negotiate???
> set trunk 3/5 off negotiate 1-1005
> set trunk 3/6 off negotiate 1-1005
>
> 7)Generally in what kind of situation , we should disable the
> MLS in the
> catalyst switch?
>
>
> __
> ___
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