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Configuration Guide - Ethernet Switching

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, MUX VLAN, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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(Optional) Configuring an Eth-Trunk Load Balancing Mode for PPPoE Packets

(Optional) Configuring an Eth-Trunk Load Balancing Mode for PPPoE Packets

Context

By default, a CE switch processes received PPPoE packets as common Ethernet packets. Figure 3-15 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. Fields in the Layer 2 frames of PPPoE packets are fixed except the source MAC address, so packets are often unevenly load balanced on an Eth-Trunk. To improve the load balancing effect, use inner information of PPPoE packets for load balancing.

Figure 3-15 Format of PPPoE packets
NOTE:

The CE6880EI can identify PPPoE packets and load balance the PPPoE packets without configuring Eth-Trunk load balancing.

Procedure

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

      The system view is displayed.

    2. Run load-balance eth-trunk 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, the switch load balances PPPoE packets based on the source MAC address (smac), destination MAC address (dmac), and VLAN ID (vlan).

      You can specify session-id and l4-src-port so that the switch load balances PPPoE packets based on the session ID and transport-layer source port of PPPoE packets.

    3. Run commit

      The configuration is committed.

  • Configure a load balancing mode for PPPoE packets on other models excluding the CE6870EI and CE6875EI.
    1. Run system-view

      The system view is displayed.

    2. Run load-balance profile profile-name

      The global load balancing profile view is displayed.

      By default, the load balancing profile name is default.

    3. Run eth-trunk hash-mode 8

      The Eth-Trunk load balancing hash algorithm is set to 8.

    4. Run quit

      The system view is displayed.

    5. Run load-balance ecmp

      The ECMP view is displayed.

    6. Run hash-mode 7

      The ECMP load balancing hash algorithm is set to 7.

    7. Run quit

      The system view is displayed.

    8. 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, the switch load balances PPPoE packets based on the source MAC address (smac) and destination MAC address (dmac).

      You can specify session-id and l4-src-port so that the switch load balances PPPoE packets based on the session ID and transport-layer source port of PPPoE packets.

      NOTE:

      This command is supported only by the following models: CE6850HI, CE6850U-HI, CE6851HI, CE6855HI, CE6856HI, CE6860EI, CE7800 series, and CE8800 series switches.

    9. Run commit

      The configuration is committed.

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Updated: 2019-05-08

Document ID: EDOC1100004351

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