3Com Router Command Reference Guide — V1.002.6.5 nat aging-timeSyntaxnat aging-time { tcp | udp | icmp } secondsnat aging-time defaultViewSystem viewParametertcp seconds: The time that a TCP connection times out, in the range of 10 to 600seconds. By default, the valid value is 240 seconds.udp seconds: The time that a UDP connection times out, in the range of 10 to 600seconds. By default, the valid value is 40 seconds.icmp seconds: The time that an ICMP protocol times out, in the range of 10 to 600seconds. By default, the valid value is 20 seconds.DescriptionUsing the nat aging-time command, you can configure the valid NAT time. Using thenat aging-time default command, you can restore the default value.This command sets up the valid time of address translation connection, different timefor different type of protocol. The unit of time is second.Example# Set up the valid connection time of TCP protocol to 240 seconds.[Quidway] nat aging-time tcp 2402.6.6 nat outbound address-groupSyntaxnat outbound acl-number address-group pool-nameundo nat outbound acl-number address-group pool-nameViewInterface view44