Brocade Virtual ADX Switch and Router Guide (Supporting ADX v03.1.00) - Manual (Page 94)

80 Brocade Virtual ADX Switch and Router Guide
53-1003246-01
Configuring IP parameters
4
FIGURE 18 Host-based IP load sharing – basic example
As shown in this example, when the Virtual ADX receives traffic for a destination and the IP route
table has multiple equal-cost paths to that destination, the Virtual ADX selects the next equal-cost
path (next-hop router) in the rotation and assigns that path to destination. The path rotation is
determined by the order in which the IP route table receives the paths.
Since the configuration in this example contains two paths to hosts H1 – H9, the software
alternates between the two paths when creating new load sharing cache entries for hosts H1 – H9.
So long as the cache entry for a destination remains in the cache, the Virtual ADX always uses the
same path for the traffic to the destination. In this example, the Virtual ADX always uses R2 as the
next hop for forwarding traffic to H1.
Disabling or re-enabling load sharing
To disable IP load sharing, enter the following commands.