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Configuration Guide - IP Unicast Routing

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of IP Unicast Routing, including IP Routing, Static Route, RIP, RIPng, OSPF, OSPFv3, IPv4 IS-IS, IPv6 IS-IS, BGP, Routing Policy, and PBR.
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Configuring an ECMP Load Balancing Mode for PPPoE Packets

Configuring an ECMP Load Balancing Mode for PPPoE Packets

Context

By default, a CE switch except the CE5880EI and CE6880EI processes received PPPoE packets as common Ethernet packets. Figure 1-7 shows the format of PPPoE packets. The switch cannot identify the 5-tuple information in PPPoE packets and performs the hash algorithm based on the outer Ethernet frame of common Layer 2 packets by default. There are fewer variable fields of Layer 2 Ethernet frames of PPPoE packets and only source MAC addresses of packets from different users are different, so packets are often unevenly load balanced on an ECMP. To improve load balancing, use inner information of PPPoE packets for load balancing.

Figure 1-7 Format of PPPoE packets
NOTE:

The CE5880EI and CE6880EI can identify PPPoE packets and load balance the PPPoE packets without configuring ECMP load balancing.

Procedure

  • (On the CE6870EI and CE6875EI) Configure a load balancing mode for PPPoE packets.
    1. Run system-view

      The system view is displayed.

    2. Run load-balance ecmp pppoe { session-id | l4-src-port { ppp-address-compression | ppp-protocol-compression | both | none } }

      A load balancing mode is configured for PPPoE packets.

      By default, PPPoE packets are load balanced based on src-mac, dst-mac, and vlan.

      You can also specify session-id and l4-src-port to configure a load balancing mode for PPPoE packets based on the session ID and transport-layer source interface of the packets.

    3. Run commit

      The configuration is committed.

  • (Models excluding the CE6870EI and CE6875EI) Configure a load balancing mode for PPPoE packets.
    1. Run system-view

      The system view is displayed.

    2. Run load-balance pppoe { session-id | l4-src-port { ppp-address-compression | ppp-protocol-compression | both | none } }

      A load balancing mode is configured for PPPoE packets.

      By default, PPPoE packets are load balanced based on src-mac and dst-mac.

      You can also specify session-id and l4-src-port to configure a load balancing mode for PPPoE packets based on the session ID and transport-layer source interface of the packets.

      NOTE:

      Only the CE6850HI, CE6850U-HI, CE6851HI, CE6855HI, CE6856HI, CE6857EI, CE6860EI, CE6865EI, CE7850EI, CE7855EI, CE8850EI, CE8860EI, CE8861EI, and CE8868EI support this command.

    3. Run commit

      The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100074760

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