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> Bonding
Marktower
post Mar 5 2012, 07:28 AM
Post #1


Whats this Lie-nix Thing?
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Joined: 29-February 12
From: Portugal
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Hello,

I was reading and trying the same configuration that is present in "Linuxhelp > Support > Guides Forum> Channel Bonding , load balancing, CentOS 4.x", and I have a question about this and I will be very glade to listen your advise.

I know that is possible to do LACP (802.3ad Link Aggregation Control Protocol) in a CentOS box with 2 wired interfaces.
You may think why? And the answer is: For the network load to be balanced across more links, because of bandwidth limitations, etc, etc...
I will need to combine two physical Ethernet links or ports, into one logical link via channel bonding. Like others linux distributions I'm using ifenslave, miitools, etc.
To do my wired bonding/aggregation was easy and all goes ok, up and running.

After this I think, why not try to do bonding of two wifi cards also, the ath0 and ath1 that I have in my two CentOS box's.
Every way that I try seems to work fine until 2 wireless devices are bonded. When that happens they both disconnect and reconnect like crazy. I have done exactly the same thing that you have in your post. But maybe something missing for me...

My ifconfig output:

bond0 Link encap:Ethernet HWaddr A4:BA:DB:10:30:1E
inet addr:132.207.108.7 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a6ba:dbff:fe10:301e/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:572665 errors:0 dropped:0 overruns:0 frame:0
TX packets:145041 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:320433098 (305.5 MiB) TX bytes:11531560 (10.9 MiB)

ath0 Link encap:Ethernet HWaddr A4:BA:DB:FF:FA:KE
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:286461 errors:0 dropped:0 overruns:0 frame:0
TX packets:87853 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:160503391 (153.0 MiB) TX bytes:6747616 (6.4 MiB)
Interrupt:106 Memory:da000000-da012800

ath1 Link encap:Ethernet HWaddr A4:BA:DB:FF:FA:KE
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:286204 errors:0 dropped:0 overruns:0 frame:0
TX packets:57188 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:159929707 (152.5 MiB) TX bytes:4783944 (4.5 MiB)
Interrupt:114 Memory:dc000000-dc012800

I think because my two wifi cards are getting the same MAC address the wireless access point is getting confused. Did I need to make sure that both cards get different MAC addresses? But at same time I also think the process of bonding will always make the device IP and MAC address the same. That is the meaning of the word 'bonded'. And I agree and this is working well on wired interfaces. But in Wireless interfaces no.

In the other post "Linuxhelp > Support > Guides Forum> Channel Bonding , load balancing, CentOS 4.x" it speaks about option called MAC ADDRESS CLONING, but I do not understand what MAC address I need to clone in my case. Can someone advise me please.

All advises or experience that you may give will be very appreciated.

Best Regards,
Tower
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Posts in this topic
- Marktower   Bonding   Mar 5 2012, 07:28 AM
- - Marktower   QUOTE (Marktower @ Mar 5 2012, 12:28 PM) ...   Mar 6 2012, 05:46 AM


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