Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual Page 64
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52 ServerIron ADX Advanced Server Load Balancing Guide
53-1002435-01
Other TCS options
2
ServerIronADX(config)# server cache-group 1
ServerIronADX(config-tc-1)# source-nat
ServerIronADX(config-tc-1)# dest-nat
These commands configure a source IP address at the global CONFIG level of the CLI, then change
the CLI to the cache group configuration level and enable source NAT and Destination NAT. Source
NAT configures the ServerIron ADX to change the source IP address in a client query from the
client’s IP address to configured source IP address. Destination NAT configures the ServerIron ADX
to change the destination IP address of the client’s request to the IP address of the cache server.
Syntax: [no] source-ip <ip-addr> <network-mask> <default-gateway>
NOTE
The gateway parameter is required. If you do not want to specify a gateway, enter "0.0.0.0".
Syntax: [no] source-nat
To enable source NAT on a specific cache server instead of at the cache group configuration level
for all cache servers, enter commands such as the following:
ServerIronADX(config)# server cache-name C1
ServerIronADX(config-rs-C1)# source-nat
ServerIronADX(config-rs-C1)# dest-nat
The commands in this example enable Source NAT and Destination NAT on cache server C1 only.
This example assumes that the source IP address also is configured as shown in the previous
example.
NOTE
FTP is not supported when source NATis configured.
Selecting a method for server selection within a cache group
By default, selecting a server within a cache group is performed using a hash method that is based
on source and destination IP addresses for the SSL and HTTP protocols and for all other protocols
the least connection method is used. The method of server selection within a cache group can be
changed as shown in the following.
ServerIronADX(config)# server cache-group 1
ServerIronADX(config-tc-1)# predictor least-connection port http
ServerIronADX(config-tc-1)# predictor hash port ftp
Syntax: predictor { hash | least-connection } port <portname or number>
The default predictor for SSL and HTTP is the hash method described in “Controlling traffic
distribution among cache servers” on page 53.
The default predictor for all other protocols is least-connection.
Examples
In the following example, SSL traffic uses the hash mechanism to select a cache server which is
the default action. SSL and HTTP traffic can use one hash table, This means that traffic having the
same hash value will go to the same cache server whether it is SSL traffic or HTTP traffic.
ServerIronADX(config)# server cache-name cs1 3.3.3.1
ServerIronADX(config-rs-server1)# port http
- ServerIron ADX 1
- Document History 2
- Contents 5
- About This Document 9
- Command syntax conventions 10
- Notice to the reader 11
- Related publications 11
- Web access 12
- E-mail and telephone access 12
- SIP Server Load Balancing 13
- SIP terminology 16
- SIP message headers 17
- Max-Forwards 18
- Sample deployment topologies 19
- RINGING F4 21
- Configuring SIP SLB 23
- Configuring health check 26
- Example 29
- Load Balancing SIP over TCP 31
- Call-ID3 33
- Call-ID1 34
- Rehashing the SIP hash table 38
- Debug commands 40
- SIP SLB command reference 42
- Sample configuration 43
- Transparent Cache Switching 45
- Stateful caching 47
- Sample Deployment Topologies 48
- TCS with spoofing 49
- TCS with destination NAT 49
- TCS with Source NAT 50
- VIPs with reverse proxy 51
- Configuring TCS 52
- Defining a cache server 53
- Enabling TCS 56
- Other TCS options 57
- Cache Route Optimization 58
- Enabling Destination NAT 62
- Configuring Source NAT 62
- Examples 64
- Distribution algorithm 66
- • Maximum connection rate 72
- Enabling FastCache 73
- Enabling remote cache 73
- Shutting down a cache server 74
- Passive FTP for TCS 75
- Traffic flow of passive FTP 76
- Topologies supported 76
- High availability support 77
- ServerIron ADX 2 78
- Policy based caching 79
- Show commands 81
- Content aware cache switching 82
- Setting up the CSW policies 84
- Configuring the cache servers 85
- This field... Displays 91
- Displaying cache information 95
- TCS information (Continued) 96
- Sample configurations 98
- Applying IP policies 99
- Defining the caches 99
- Defining the cache groups 100
- 53-1002435-01 101
- Policy-based caching 102
- Asymmetric TCS (FastCache) 103
- Policy-based cache failover 105
- TCS with reverse proxy 107
- Layer 3 TCS 109
- Basic TCS configuration 110
- Commands for ServerIron ADX A 111
- Commands for ServerIron ADX B 112
- Internet 114
- 10.10.20.104 114
- 10.10.20.102 114
- Router NI1 117
- Router NI2 117
- OSPF Area 0 117
- Commands for Router NI2 121
- Active-standby TCS 125
- Configuring Router R1 126
- Configuring ServerIron ADX A 126
- Configuring ServerIron ADX B 127
- NetCache servers 128
- NetCache C720 cache server 128
- TABLE 9 Hashing methods 130
- Parsing the host string 133
- Force rehash 136
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