Hi

Can anyone tell me if it is possible to bond an existing bond.

I have 4 nics assigned to 2 bonds for link aggregation. ie

e1000g0 - bond1 - mode =4
e1000g1 - bond1 - mode =4

e1000g2 - bond2 - mode =4
e1000g3 - bond2 - mode =4

I would have presumed that you have 2 x agregates giving 2 x 2gig links and the resilience is that if one nic fails in either bond you carry on with that bond running a 1 gig link until fixed.

But, our architect wants to have an active/passive (mode 1) accross bond2 and bond3.

I have setup tons of mode 1 bonds and mode 4 bonds but never tried bonding 2 x mode 4 bonds!

any thoughts?

thanks.

sorry, above should read

But, our architect wants to have an active/passive (mode 1) accross bond1 and bond2. So bond3 (mode 1) will consist of bond1 and bond2.

thanks.

Hi

Can anyone advise if this is the forum or if know of better place to post this question?

THanks

Answer to this is you cant bond a bond. The linux kernel will not support.

Having 2 LACP bonds with 2 IPs didnt work with our netbackup server version either.....couldnt handle multiple IPs.....i believe this may be addressed in newer version (7>)

So for now stuck to normal mode 1 bond.

But have seen article that in RHEL 6 and bonding 3.5.0 or later can have bond with multiple nics accross multiple switches with different aggregate IDs. RHEL 6 not in roadmap for a while so cant play as dont have a system that could test the trunking.

http://sourceforge.net/projects/bond.../topic/3683894

Have the limitations changed?

I have a similar situation, I would like to bond bonds...

Switch1
eth0 - bond0 - mode=4
eth2 - bond0 - mode=4

Switch2
eth1 - bond1 - mode=4
eth3 - bond1 - mode=4

Bond of Bonds 2 * 2Gb connectivity
bond0 - bond2 - mode=6
bond1 - bond2 - mode=6

Thereby giving load balancing and protection from a switch failure...

I'm running RHEL 6 which appears to have 3.6.0 of the bonding driver. Or is their another method I should be using to achieve what I want?