Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual Page 89
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ServerIron ADX Advanced Server Load Balancing Guide 77
53-1002435-01
Content aware cache switching
2
ServerIronADX(config)# csw-rule r1 url pattern “asp”
ServerIronADX(config)# csw-policy policyA1
ServerIronADX(config-csw-policyA1)# match forward 0
ServerIronADX(config-csw-policyA1)# default forward 100
ServerIronADX(config-csw-policyA1)# exit
The pattern method in the command causes the policy to look for the selection criteria anywhere
within the URL string.
The match forward 0 command looks for URL strings that contain the text "asp"; for example,
/active/q.asp?ln=fdry. These HTTP requests are sent to the Internet.
The default forward 100 command sends HTTP requests that do not meet the selection criteria in
policyA1’s match command server group ID = 100.
Configuring the cache servers
To place the cache servers in Figure 20 on page 76 into server group ID = 100, enter the following
commands.
ServerIronADX(config)# server cache-name CacheServer1 192.168.1.101
ServerIronADX(config-rs-CacheServer1)# port http group-id 100 100
ServerIronADX(config-rs-CacheServer1)# exit
ServerIronADX(config)# server cache-name CacheServer5 192.168.1.102
ServerIronADX(config-rs-CacheServer5)# port http group-id 100 100
ServerIronADX(config-rs-CacheServer5)# exit
ServerIronADX(config)# server cache-name CacheServer6 192.168.1.103
ServerIronADX(config-rs-CacheServer6)# port http group-id 100 100
ServerIronADX(config-rs-CacheServer6)# exit
Assigning the cache servers to a cache group
To activate the configuration shown in Figure 20, enter the following commands.
ServerIronADX(config)# server cache-group 1
ServerIronADX(config-tc-1)# cache-name CacheServer1
ServerIronADX(config-tc-1)# cache-name CacheServer2
ServerIronADX(config-tc-1)# cache-name CacheServer3
ServerIronADX(config-tc-1)# http-cache-control
ServerIronADX(config-tc-1)# csw
ServerIronADX(config-tc-1)# csw-policy policyA1
Syntax: [no] http-cache-control
The http-cache-control command ensures that HTTP 1.0 requests that have a pragma:no-cache
header and HTTP 1.1 requests that have a Cache-Control header containing a no-cache directive
are sent to the Internet. This is the default behavior. To configure the ServerIron ADX to ignore the
pragma:no-cache or Cache-Control header in an HTTP request, use the no http-cache-control
command.
HTTP 1.1 support for content aware cache switching
Beginning with release 12.4.00, HTTP keep-alive mode is enabled by default for content aware
cache switching. This has been added to fully support HTTP 1.1 for TCS CSW; Unlike the operation
in previous releases of ServerIron ADX, the client request isn’t downgraded to HTTP 1.0 and the
connection header is unmodified. The client will send subsequent requests over the same TCP
connection if the server supports HTTP keep-alive. The ServerIron ADX software will maintain 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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