Load balancing using 1300 series

[binoyjosephstanly]

i have 4 1300 series bridges, want to connect to branch from H.O, planning to put 2 no's in H.O & 2 in branch. i want to use both of them, how can i use these 2 links? how can i achieve the load balance facility.

In H.O & branch i'm using 3750 switches with EMI.

i will appreciate the inputs.

Regds

Binoy.

[scottmac]

Well, to begin with, I suppose you'd want to put a root and non-root at each side of the span; that would prevent two non-roots from associating to the same root on the other side.

Different channels is a must, as far apart as possible (i.e., Channel 1 for #1, channel 11 for the other).

Once you have the parallel links up & tweaked, then the load balance can be done by whatever your preferred method might be (i.e., policy routing, hard-coded default gateways, routing protocols ... whatever).

Good Luck

Scott

[binoyjosephstanly]

Dear scott thanks for your input.

i have no issues to opt 2 different channels.

but if i connect 2 1300 at one site and to one 3750 switch, STP will cut one of them rt?.

but im confused how can i achieve load alancing in this scenario.

is there any special config. required at switch side.

but if i connect these two into a single switch STP will cut one of them, how can i overcome this, i cannot disable STP in switch bcoz it's a Datacenter switch, with 45 servers and all.

scott can you give me an idea abt all these things.

thnaks & regds

Binoy

[binoyjosephstanly]

Dear scott thanks for your input.

i have no issues to opt 2 different channels.

but if i connect 2 1300 at one site and to one 3750 switch, STP will cut one of them rt?.

but im confused how can i achieve load alancing in this scenario.

is there any special config. required at switch side.

but if i connect these two into a single switch STP will cut one of them, how can i overcome this, i cannot disable STP in switch bcoz it's a Datacenter switch, with 45 servers and all.

scott can you give me an idea abt all these things.

thnaks & regds

Binoy

[sushilk]

Hi Binoy,

On both the sites there will be two bridges.

You can try out the following configuration:

On Site 1

Configure bridge pair 1 to have a relatively low administrative distance and bridge pair 2 to have

a relatively high administrative distance.

On Site 2

Configure bridge pair 1 to have a relatively high administrative distance and bridge pair 2 to have a

relatively low administrative distance.

Traffic will flow from site 1 to site 2 across ridge pair 1 and from site 2 to site 1 across bridge pair 2.

In order to have redundancy you can have another pair of bridge. Then configure bridge pair 3 to have a relatively medium administrative distance on Site 1 and configure bridge pair 3 to have a relatively medium administrative distance on site 2 also.

Thus, whenever either bridge pair fails, bridge pair 3 will work as the failover link.

Please find the network diagram and the related configurations.

Regards,

Sushil.