From: Victor Cappuccio (cvictor@protokolgroup.com)
Date: Sun Aug 13 2006 - 15:01:51 ART
More about this
Sw1#test spanning-tree diameter 2
diameter 2 and hello time 2 gives max age = 10 and forward delay 7
Sw1#test spanning-tree diameter 3
diameter 3 and hello time 2 gives max age = 12 and forward delay 9
Sw1#test spanning-tree diameter 4
diameter 4 and hello time 2 gives max age = 14 and forward delay 10
Sw1#test spanning-tree diameter 5
diameter 5 and hello time 2 gives max age = 16 and forward delay 12
Sw1#test spanning-tree diameter 6
diameter 6 and hello time 2 gives max age = 18 and forward delay 13
Sw1#test spanning-tree diameter 7
diameter 7 and hello time 2 gives max age = 20 and forward delay 15
Sw1#test spanning-tree diameter 7
diameter 7 and hello time 2 gives max age = 20 and forward delay 15
-----Mensaje original-----
De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de
Schulz, Dave
Enviado el: Domingo, 13 de Agosto de 2006 11:35 a.m.
Para: paul.schuuring@tele2.com
CC: ccielab@groupstudy.com; tony_hall123@hotmail.co.uk
Asunto: Re: Spanning-Tree
Excellent point, Paul. Thanks!
Dave Schulz
*** Sent from my Blackberry ***
-----Original Message-----
From: Paul Schuuring <paul.schuuring@tele2.com>
To: Schulz, Dave <DSchulz@dpsciences.com>
CC: ccielab@groupstudy.com <ccielab@groupstudy.com>; tony hall
<tony_hall123@hotmail.co.uk>
Sent: Sun Aug 13 11:15:29 2006
Subject: RE: Spanning-Tree
Good to know Dave.
It depends on the diameter though. Diameter of 3 gives Fwdelay=5;
SW2(config)#spanning-tree vlan 1 root primary diameter 3 hello-time 1
SW2(config)#
SW2#sh spanning-tree vlan 1 | i VLAN|ID|Forward
VLAN0001
Root ID Priority 24577
Hello Time 1 sec Max Age 7 sec Forward Delay 5 sec
Bridge ID Priority 24577 (priority 24576 sys-id-ext 1)
Hello Time 1 sec Max Age 7 sec Forward Delay 5 sec
While diameter of 6 gives Fwdelay=8;
SW2(config)#spanning-tree vlan 1 root primary diameter 6 hello-time 1
SW2(config)#
SW2#sh spanning-tree vlan 1 | i VLAN|ID|Forward
VLAN0001
Root ID Priority 24577
Hello Time 1 sec Max Age 11 sec Forward Delay 8 sec
Bridge ID Priority 24577 (priority 24576 sys-id-ext 1)
Hello Time 1 sec Max Age 11 sec Forward Delay 8 sec
Paul Schuuring
"Schulz, Dave" <DSchulz@dpsciences.com>
08/13/2006 04:55 PM
To
"Paul Schuuring" <paul.schuuring@tele2.com>, "tony hall"
<tony_hall123@hotmail.co.uk>
cc
<ccielab@groupstudy.com>
Subject
RE: Spanning-Tree
There is yet another way to do this (if something in the scenario won't
let you directly use that forward-time command)......
You can use the extensions on this command:
spanning-tree vlan xx root <primary/secondary> diameter hello-time
Setting the hello-time to 1 sec will automatically add the commands for
the forward-time of 5seconds and a max-age time of 7 seconds. (either
primary or secondary both work).
Just another way to do something.
Dave Schulz
Email: dschulz@dpsciences.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Paul Schuuring
Sent: Sunday, August 13, 2006 9:26 AM
To: tony hall
Cc: ccielab@groupstudy.com
Subject: Re: Spanning-Tree
Hi Tony,
When they ask you to set the time fixed to 5 seconds. It's more likely
to
adjust the forwarding time;
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225see/scg/s
wstp.
htm#wp1150580
Configure the forward time of a VLAN. The forward delay is the number of
seconds a port waits before changing from its spanning-tree learning and
listening states to the forwarding state.
SW2(config)#spanning-tree vlan 1 forward-time 5
SW2#sh spanning-tree vlan 1 | i VLAN|ID|Forward
VLAN0001
Root ID Priority 24577
Hello Time 2 sec Max Age 20 sec Forward Delay 5 sec
Bridge ID Priority 24577 (priority 24576 sys-id-ext 1)
Hello Time 2 sec Max Age 20 sec Forward Delay 5 sec
Paul Schuuring
"tony hall" <tony_hall123@hotmail.co.uk>
Sent by: nobody@groupstudy.com
08/13/2006 01:41 PM
Please respond to
"tony hall" <tony_hall123@hotmail.co.uk>
To
ccielab@groupstudy.com
cc
Subject
Spanning-Tree
Hi Group,
Can some one explain to me that how can I shortened the time for
listening
and learning to 5 sec on my switch.Please if some one can explain in bit
detail.
Regards, Tony.
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