Brocade Communications Systems ServerIron ADX 12.4.00 Manual de servicio Pagina 77

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ServerIron ADX Advanced Server Load Balancing Guide 65
53-1002435-01
Other TCS options
2
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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