Configuring the Enhanced Forwarding Function for Control Packets Generated by the Device

Procedure

1. Run system-view

   The system view is displayed.

2. Run ip soft-forward enhance enable

   The enhanced forwarding function is enabled.

   By default, the enhanced forwarding function is enabled.

3. (Optional) Set the priority for control packets.
   1. Run set priority dot1p priority-value

      The 802.1p priority is set for the control packets.

   2. Run
      • Run the set priority protocol-type protocol-type dscp dscp-value command to set the DSCP priority for the control packets according to the protocol type.
      • Run the set priority acl acl-number dscp dscp-value command to set the DSCP priority for the control packets according to the ACL rule.
      You can set the priority of BGP, FTP, ICMP, SNMP, SSH, and Telnet control packets according to the protocol type. To set the priority of other types of control packets, configure advanced ACL rules according to Configuring an Advanced ACL and then set the DSCP priority of the control packets according to the ACL rules.

      If you set the DSCP priority for control packets according to both the protocol type and ACL rule, the DSCP priority configured according to the protocol type takes effect.

4. (Optional) Configure the control packets to support QoS policies using one or more of the following commands.
   1. Run undo control-packet { bgp | icmp | igmp | ospf | pim | rip | snmp | ssh | telnet | udp [ ip_address port ] | other-protocols } ^* output car bypass or undo control-packet all output car bypass

      Control packets are configured to support traffic policing function.

      By default, control packets do not support traffic policing function.

   2. Run undo control-packet { bgp | icmp | igmp | ospf | pim | rip | snmp | ssh | telnet | udp [ ip_address port ] | other-protocols } ^* output queue bypass or undo control-packet all output queue bypass

      Control packets are configured to support QoS queue functions (including traffic shaping, congestion management, and congestion avoidance).

      By default, control packets do not support QoS queue functions.

   3. Run undo control-packet { bgp | icmp | igmp | ospf | pim | rip | snmp | ssh | telnet | udp [ ip_address port ] | other-protocols } ^* output filter bypass or undo control-packet all output filter bypass

      The device is configured to discard control packets when the traffic policy or ACL-based simplified traffic policy contain the deny action.

      By default, the device does not discard control packets when the traffic policy and ACL-based simplified traffic policy contain the deny action.

      After this command is executed, the device discards control packets.