From: Emad (emad@zakq8.com)
Date: Fri Jul 11 2003 - 16:17:41 GMT-3
The uplinks will carry vlans of course , the design is like this:
Three access layer switches , each one has 2 vlans configured and all
the three switches are connected through one uplink to one core and the
another link to the another core switch ,
Of course the core switches will have all the vlans configured on all
the access layer switches but I need to load balance between the two
uplinks connecting between each access layer switch and the core switch,
How can I do it , if I used the routing , shall I turn the port-channel
of the uplinks to be L3 ports or what?
Plz advice
thanx
-----Original Message-----
From: Larry Letterman [mailto:lletterm@cisco.com]
Sent: Friday, July 11, 2003 10:09 PM
To: 'Emad '; ccielab@groupstudy.com
Subject: RE: Switching: OT network design
If the network were L3 to the switches and no vlans, the routing
Protocol could load balance coming down to the switches...
The only way I know to do it, is to make one core the root switch for
one
Vlan and the other core the root for the other..thats not a good design,
but if
You really want to load balance from the core it might work...
Larry Letterman
Cisco Systems
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Emad
Sent: Friday, July 11, 2003 11:50 AM
To: ccielab@groupstudy.com
Subject: Switching: OT network design
Folks,
I just wanna share an idea with you all ,
I have 4506 switch in a network acting as the access layer and connected
to two 6513 core switches with 2G uplink per each one,
Each 4506 switch has 2 vlans and I want to have both uplinks to the core
switches working in load balance , how can we guarantee that:
- By STP layer2 load balance? If yes , plz tell me how?
- By enabling routing protocol between the access layer and the core
layer , but how?
I read the good paper of CISCO AVVID network infrastructure but I didn't
get it because most of scenarios are depending on one vlan and
redundancy between the two uplinks not load balancing and 2 vlans,
Plz advice
Thanx
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