Allied Telesis x900-48FE-N User Manuals

Table of Contents

• Introduction

  1
• What information will you find in this document?

  1
• Which products and software versions does it apply to?

  2
• How EPSR Works

  3
  • Establishing a Ring

    4
  • Detecting a Fault

    5
  • Recovering from a Fault

    5
    • Fault in a link or a transit node

      5
    • Fault in the master node

      6
  • Restoring Normal Operation

    7
    • Master Node

      7
    • Transit Nodes with One Port Down

      7
    • Transit Nodes with Both Ports Down

      7
• How To Configure EPSR

  8
  • Configuring EPSR

    8
  • Modifying the Control VLAN

    10
• Example 1: A Basic Ring

  11
  • Configure the Master Node (A)

    11
  • Configure the Transit Nodes (B and C)

    12
• Example 2: A Double Ring

  14
• Example 3: EPSR and RSTP

  17
• Example 4: EPSR with Nested VLANs

  20
• Example 5: EPSR with management stacking

  23
• Example 6: EPSR with an iMAP

  26
  • Configure the AT-TN7100 iMAP as Master Node

    26
    • Checking the Master Node Configuration

      27
  • Configure the AT-TN7100 iMAP as a Transit Node

    28
    • Checking the Transit Node Configuration

      28
• Classifiers and Hardware Filters

  29
• Ports and Recovery Times

  30
• IGMP Snooping and Recovery Times

  31
• Health Message Priority

  31
• EPSR State and Settings

  32
• SNMP Traps

  34
• Counters

  35
• Debugging

  36
  • Link Down Between Master Node and Transit Node

    36
    • Master Node (Node A) Debug Output

      36
    • Transit Node (Node B) Debug Output

      42
  • Link Down Between Two Transit Nodes

    47
    • Master Node (Node A) Debug Output

      47
    • Transit Node (Node B) Debug Output

      53