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Old 08-20-2010, 02:54 AM   #1
kas22
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Question Bonding a Bond running 802.3ad Dynamic link aggregation


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.
 
Old 08-23-2010, 04:13 AM   #2
kas22
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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.
 
Old 08-27-2010, 02:58 AM   #3
kas22
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Hi

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

THanks
 
Old 04-21-2011, 04:54 AM   #4
kas22
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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
 
Old 10-20-2011, 04:24 PM   #5
JLew
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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?
 
  


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