In per-flow load balancing mode, why all hops except the first hop of packets in the Tracert test are identical?

Created Apr 12, 2017 08:41:20Latest reply Apr 12, 2017 14:03:25 617 2 0 0
In per-flow load balancing mode, why all hops except the first hop of packets in the Tracert test are identical?
  • x
  • convention:

user_2790689  Expert   Created Apr 12, 2017 13:44:04 Helpful(0) Helpful(0)

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  • x
  • convention:

Adamcolob     Created Apr 12, 2017 14:03:25 Helpful(0) Helpful(0)

In per-flow load balancing mode, the hash algorithm is based on the quintuple information of the packet. The Tracert test sends three UDP packets each time, with the destination port number in the UDP packet being increased by 1.

The first link for forwarding a UDP packet is calculated according to the quintuple information of the packet through the hash algorithm. The destination port number of each UDP packet is different, and therefore the obtained first hop is different.

In per-destination load balancing mode, UDP packets are forwarded as common packets in the second link and later, and therefore the other hops of UDP packets are identical.
  • x
  • convention:

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