09-22-2005 02:53 AM - edited 03-03-2019 12:08 AM
Hello I was reading this link
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00800ae96a.shtml
Trying to understand the Load Balancing Part
I looked to more configurations about this, and I got completely lost.
For Example
F0 | ========= | F0
Catalyst A Catalyst B
F1 | ========= | F1
Suppose now that Switch A is the root for Vlan 5, and Switch B is the root for Vlan 18
Now I want that Vlan 18 uses trunk F0, and that Vlan 5 uses trunk F1
So if I see it in this way (I have no lab equipments so sorry for the post)
For Vlan 5, can I change the priority like this
Switch A -----------------------------------------------------Switch B
F0 Priority 1 | =================== | 1 Priority
F1 Priority 100 | =================== | 100 Priority
And for Vlan 18 can I change the priority like This.
Switch A -----------------------------------------------------Switch B
F0 Priority 100 | =================== | 100 Priority
F1 Priority 1 | =================== | 1 Priority
I know that this cold maybe work (but its like a hard thinking) because Switch A owns Vlan 5 and Switch B is the root for vlan 18
Can anyone try to explain this a little bit better?
Thanks
Victor
Solved! Go to Solution.
09-22-2005 07:44 AM
Yeah, that can make your head hurt.
First question is, why not just make these two links an etherchannel? If its a channel connection the load is automatically split across both links, and the failover is much faster. This document even suggests that at the end.
If you really do want to do this, realize that you only tune on the 'root' side. If the A switch is your root, do the tuning there. Leave the B switch alone.
Greg
09-22-2005 07:44 AM
Yeah, that can make your head hurt.
First question is, why not just make these two links an etherchannel? If its a channel connection the load is automatically split across both links, and the failover is much faster. This document even suggests that at the end.
If you really do want to do this, realize that you only tune on the 'root' side. If the A switch is your root, do the tuning there. Leave the B switch alone.
Greg
09-23-2005 06:43 AM
hi
in normal stp of two switch network there is one root bridge and other is non root bridge having one designated port and block port to avoid loop. so you will get one designated port on non root bridge throught which u communicat with root bridge so only one link you are using. so when u creat different vlan, it is quite obious all vlan data pass through that one link. If u want to have load balance you have to select two different root bridge and that is what u have done by influancing priority, and by this way u are able to utilise both the link...
devang
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