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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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How Do I Change the Aging Time of the Firewall Session Table?

How Do I Change the Aging Time of the Firewall Session Table?


<Huawei> system-view
[Huawei] firewall-nat session { dns | ftp | ftp-data | http | icmp | tcp | tcp-proxy | udp | sip | sip-media |  rtsp | rtsp-media | pptp | pptp-data } aging-time time-value

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The Router creates a session table for data flows of each protocol, such as TCP, UDP, and ICMP, to record the connection status of the protocol. An aging time is set for the session table. If a record in the session table does not match any packet within the aging time, the system deletes the record.

By default, the aging time of each protocol is as follows:
  • DNS: 120 seconds
  • FTP: 120 seconds
  • FTP-data: 120 seconds
  • HTTP: 120 seconds
  • ICMP: 20 seconds
  • TCP: 600 seconds
  • TCP-proxy: 10 seconds
  • UDP: 120 seconds
  • SIP: 1800 seconds
  • SIP-media: 120 seconds
  • RTSP: 60 seconds
  • RTSP-media: 120 seconds
  • PPTP: 600 seconds
  • PPTP-data: 600 seconds

The default aging time is recommended.

AR510 series do not support the sip and sip-media keywords.

Updated: 2019-05-10

Document ID: EDOC1000079719

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