The P4S company connects a pair of sites with three GigE links between two routers with fairly high processor utilization. It has a great many pairs of hosts communicating between the sites, and some use applications that may be sensitive to packet re-ordering. How to maximize the utility of the links while adding minimal load to the routers?
A) use policy-based routing to force all delivery order applications onto a single link and configure per-packet load sharing across the remaining two links
B) verify that the total delay of each link is within 100 milliseconds of the other two links and configure per-packet load sharing across the three links
C) set the link metrics so all three paths are installed in the routing table and use the default per-flow load sharing across the links
D) use multilink PPP to bundle the three links into a single logical link and adjust the routing metrics as needed

Question

Quizplus · Accepted Answer

Per-flow load sharing across the links will distribute traffic evenly without causing packet re-ordering, as each flow will consistently use the same path. This approach minimizes additional load on the routers compared to per-packet load sharing.

The P4S Company Connects a Pair of Sites with Three