Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual Page 71
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ServerIron ADX Advanced Server Load Balancing Guide 59
53-1002435-01
Other TCS options
2
Syntax: show cache-group
Configuring maximum connections for a cache server
You can limit the maximum number of connections supported on a server-by-server basis. By
setting a limit, you can avoid a condition where the capacity threshold of a cache server is
exceeded.
When a cache server reaches the maximum defined connection threshold, the ServerIron ADX
sends an SNMP trap. When the cache server reaches its maximum connection threshold, the
ServerIron ADX sends client requests to the Internet by default. You can optionally direct the
ServerIron ADX to send client requests to another available cache server that has not reached its
maximum connection threshold.
Up to 1,000,000 sessions are supported. This is the default.
To limit the connections to a maximum of 100,000 for cache server1 and 200,000 for server2 in
the network seen in Figure 9 on page 34, enter the following commands.
ServerIronADX(config)# server cache-name server1
ServerIronADX(config-rs-server1)# max-conn 100000
ServerIronADX(config-rs-server1)# server cache-name server2
ServerIronADX(config-rs-server2)# max-conn 200000
ServerIronADX(config-rs-server2)# end
ServerIronADX# write mem
Syntax: max-conn <connections-supported>
The <connections-supported> variable specifies the number of connections supported. Acceptable
values are: 1 to 2000000.
Redirecting client requests to an available cache server
When the limit specified in the max-conn command is reached for a cache server, the default
behavior is that the ServerIron ADX will redirect any traffic intended for this cache server (according
to the allocated hash distribution) directly to the internet.
ServerIronADX# show cache-group
Cache-group 1 has 1 members Admin-status = Enabled Active = 0
Hash_info: Dest_mask = 255.255.255.0 Src_mask = 0.0.0.0
Cache Server Name Admin-status L4-Hash-Buckets L7-Hash-Buckets
cs1 6 0 0
Name: cs1 IP: 192.168.1.1 State: 6 Groups = 1
Spoof Enable Cache->Web-Server Web-Server->Cache
CurCon TotCon Packets Octets Packets Octets
Total 0 0 0 0 0 0
Client->Cache Cache->Client
State CurCon TotCon Packets Octets Packets Octets
http active 0 0 0 0 0 0
Total 0 0 0 0 0 0
- 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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