Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual download pdf (Page 59)

ServerIron ADX Advanced Server Load Balancing Guide 47

53-1002435-01

Other TCS options

Syntax: [no] server cache-router-offload

NOTE

FTP is not supported when cache-router-offload is enabled.

Cache Route Optimization example

The Cache Route Optimization (CRO) feature solves a typical network topology dilemma, in which a

cache server’s default gateway is not the most direct route to the client. Figure 10 shows an

example of a network with this topology.

In this example, return traffic from the cache servers passes through the ServerIron ADX to the BAR

because the BAR is the default gateway for the cache servers. However, the traffic is destined for

the clients on the other side of the RAS. The ServerIron ADX can switch the traffic at wire-speed,

causing no perceivable response delays for the clients even if their return traffic must pass through

the ServerIron ADX twice. However, the client return traffic might add noticeable overhead to the

BAR, especially if the BAR is also the default gateway for other devices on the network.

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Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual Page 59