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10 ServerIron ADX Security Guide
53-1002440-03
Transaction Rate Limit (TRL)
1
Configure transaction rate limit for pass through traffic
You can configure transaction rate limit for traffic that is not going to a virtual server. You can
configure only one group for pass through traffic.
To create a transaction rate limit group for pass through traffic, follow these steps.
1. Enable privileged EXEC mode.
ServerIronADX> enable
2. Enter global configuration mode.
ServerIronADX# configure terminal
3. Specify name of BW rule set and enter client bandwidth configuration mode.
ServerIronADX(config)# client-trans-rate-limit tcp default
Syntax: [no] client-trans-rate-limit tcp | udp | icmp default
4. Specify the trl parameter for the client subnet and set a connection rate.
For IPv4:
ServerIronADX(config-client-trl)#trl 100.1.1.0 255.255.255.0 monitor-interval
3 conn-rate 10 hold-down-time 1
For IPv6:
ServerIronADX(config-client-trl)#trl 300:11/128 monitor-interval 3 conn-rate
10 hold-down-time 1
Syntax: [no] trl { <client-IPv4> <client-mask> | <client-IPv6> <prefix> } monitor-interval
<mon-value> conn-rate <con-value> hold-down-time <hold-down-value>
5. The transaction rate limit policy pertaining to the protocol and the port must be applied to
either the physical or the virtual interface for pass through traffic. This will ensure that the
traffic is brought to the application processor (BP) for rate-limitation.
Applying policy on physical interface
ServerIronADX(config) # interface eth 1/1
ServerIronADX(config-if-1/1) # ip tcp trans-rate 80
Applying policy on virtual interface
ServerIronADX(config) # interface ve 20
ServerIronADX(config-vif-20) # ip udp trans-rate 53
Syntax: [no} ip tcp | udp trans-rate <ports>
Syntax: [no} ip icmp trans-rate
The <ports> parameter specifies one or more TCP or UDP ports to monitor. You can monitor up
to four ports.
Apply transaction rate limit to a VIP
After configuring transaction rate limit, you must bind transaction rate limit to a VIP. To enable
transaction rate limit, follow these steps.
1. Enable privileged EXEC mode.
ServerIronADX> enable