Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual download pdf (Page 77)

ServerIron ADX Advanced Server Load Balancing Guide 65

53-1002435-01

Other TCS options

TCS with spoofing

In Figure 14, the cache server is spoofing the client's IP address instead of using its own IP address

when accessing the real server: In flows 3 and 4, the cache server is using the client's IP address

as the source address instead of using its own IP address.

FIGURE 14 TCS with spoofing for passive FTP

High availability support

Since sessions are synced between ServerIron ADX devices, Passive FTP for TCS also supports the

high availability (HA) topology. The most common HA setup is Active-Active mode. The following

diagram shows an example of an L2 Active-Active setup:

FIGURE 15 L2 Active-Active high availability setup

Client

CIP

1a Ctrl (CIP:x - RIP:21)

2a Data (CIP:z - RIP:y)

2b Data (CIP:z - RIP:y )

1b Ctrl (CIP:x - RIP:21)

4b Data (TIP:j - RIP:k)

3a Ctrl (TIP:i - RIP:21)

3b Ctrl (TIP:i - RIP:21)

4a Data (TIP:j - RIP:k)

CIP-Client IP Address

RIP-Real Server IP Address

TIP-Cache Server IP Address

ServerIron ADX Real Server

RIP

Transparent

Cache Server

TIP

Client

CIP

1a Ctrl (CIP:x - RIP:21)

2a Data (CIP:z - RIP:y)

2b Data (CIP:z - RIP:y )

1b Ctrl (CIP:x - RIP:21)

4b Data (CIP:j - RIP:k)

3a Ctrl (CIP:i - RIP:21)

3b Ctrl (CIP:i - RIP:21)

4a Data (CIP:j - RIP:k)

CIP-Client IP Address

RIP-Real Server IP Address

TIP-Cache Server IP Address

ServerIron ADX Real Server

RIP

Transparent

Cache Server

TIP

Spoong

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