What type of traffic breakdown? A lot of very small flows? A lot of
different src ip addresses?
On 6/2/2017 11:21 AM, CiscoNSP List wrote:
Hi Everyone - Have a 4 port etherchan between ASR1006/4500X(In VSS) - Tried virtually all
the load-balancing options on the 4500X, but port "1" in the portchan group
always gets majority of traffic share.
Links are:
ASR1006 4500X (2)
0/0/3 1/1/4
1/0/0 1/1/16
1/0/3 2/1/4
2/0/0 2/1/16
src/dst ip - I get both ports on "primary" 4500X being primarily used (1/1/4
getting the most)
src/dst mac - I get a bit of a better load spread, but 2/1/4 gets very little
traffic, and again 1/1/4 gets the most
src/dst port - 1/1/4 gets the most, 2/1/16 gets a lot more (ingress), 2/1/4,
very little
The portchan peak usage is 2 to 2.5Gb/sec, but would do more, as it is being
limited by the load-balancing....i.e 1/1/4 will max out at 1G/sec (We have a
very bursty traffic.....SP - So mix of Inet/L3VPN/backup/replication etc)
If anyone has some suggestions on how to achieve a better(more even) traffic spread, it
would be greatly appreciated....Migrating to 10Gb is what we plan to do, but am
interested in anyones comments on why 1/1/4 is used so heavily regardless of the
load-balancing algorithm used (Assuming it is because it is the "first"
port....spanning tree probably preferring this port?)....the ASR1006 only has 2
load-balancing options flow-based or vlan-manual......lol and I dont have any interest in
setting up manual vlan load-balancing 😉)
Thanks
_______________________________________________
cisco-nsp mailing list [email protected]
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/
_______________________________________________
cisco-nsp mailing list [email protected]
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/
