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CLI-based Configuration Guide - IP Unicast Routing

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009

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(Optional) Enabling the SPR Function for Protocol Packets Generated on a Device

(Optional) Enabling the SPR Function for Protocol Packets Generated on a Device

Context

By default, the SPR function cannot be enabled for protocol packets generated on a device. For example, when POTS phones are directly connected through FXS interfaces on the device, the device converts voice signals on the phones into voice packets. These voice packets do not support the SPR function. When the quality of the voice transmission link changes, the service data link must be dynamically switched to ensure voice quality. In this case, enable the SPR function for protocol packets generated on the device.

Procedure

  1. Run system-view

    The system view is displayed.

  2. The following configurations apply to IPv4 protocol packets.
    1. Run acl [ number ] acl-number [ match-order { auto | config } ]

      A numbered advanced ACL is created using an ACL number and the advanced ACL view is displayed. For the detailed ACL configuration, see Configuring an Advanced ACL.

      By default, no ACL exists on the device.

    2. Run quit

      Return to the system view.

    3. Run ip soft-forward enhance enable

      The enhanced forwarding function is enabled.

      By default, the enhanced forwarding function is enabled.

    4. Run ip route re-search acl acl-number

      The SPR function is enabled for protocol packets generated on a device.

      By default, the SPR function is disabled for IPv4 protocol packets generated on a device.

      The following protocols support this command: DNS, HTTP, HWTACACS, ICMP, RADIUS, SNMP, SSH, TELNET, BGP, GRE (GRE-KeepAlive), UDP (UDP-Helper), NQA, NHRP, CAPWAP.

  3. The following configurations apply to IPv6 protocol packets.
    1. Run acl ipv6 [ number ] acl6-number [ match-order { auto | config } ]

      A numbered ACL6 is created, and the ACL6 view is displayed for you to configure advanced ACL6s. For details about how to configure ACL6s, see Configuring an Advanced ACL6.

      By default, no ACL6 exists on the device.

    2. Run quit

      Return to the system view.

    3. Run ipv6 soft-forward enhance enable

      The enhanced forwarding function is enabled for IPv6 control packets generated on the device.

      By default, the enhanced forwarding function is enabled for IPv6 control packets generated on the device.

    4. (Optional) Run ipv6 route re-search acl acl6-number

      The SPR function is enabled for the IPv6 protocol packets generated on the device.

      By default, the SPR function is disabled for IPv6 protocol packets generated on a device.

      The following commands support this command: DNSv6, SSH, Telnet, SNMP, ICMPv6, and BGP4+.

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Updated: 2019-05-17

Document ID: EDOC1000174069

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