[ovs-dev] Stochastic group select using kernel module

Rhaban Hark rhabanhark at gmail.com
Mon Feb 16 14:49:12 UTC 2015


On 15.02.2015 at 20:12, Ben Pfaff wrote:
> On Sun, Feb 15, 2015 at 01:58:21PM +0100, Rhaban Hark wrote:
>> we want to achieve round-robin over different action-buckets in a group
>> table. Since we expect packets with identical headers (same ip & mac
>> address), the current implementation is not sufficient. As far as i know ovs
>> is using the hashed mac address to determine the selected bucket.
> What's this good for?  It seems like it would cause packet reordering at
> the destination and therefore slow down practical networking.
It's for a UDP multicast stream over multiple trees, whereas we expect a 
compensation buffer at the receivers. Nevertheless, we are going to 
inspect the amount/frequency of reordered packets.



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