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IRF overview ································································································································································· 1
Feature and hardware compatibility ······························································································································· 1
IRF application scenario ··················································································································································· 1
IRF functionality ································································································································································· 2
Network topology ···················································································································································· 2
Simplified topology ·················································································································································· 2
Single point of management ··································································································································· 3
Node redundancy ···················································································································································· 3
Link redundancy ······················································································································································· 3
Configuration synchronization ································································································································ 4
Basic concepts ··································································································································································· 4
Operating mode ······················································································································································· 4
IRF member roles ······················································································································································ 4
IRF member ID ··························································································································································· 4
MPU roles ·································································································································································· 5
IRF port ······································································································································································ 5
IRF physical interface ··············································································································································· 5
MAD ·········································································································································································· 6
IRF domain ID ··························································································································································· 6
IRF split ······································································································································································ 7
IRF merge ·································································································································································· 7
Member priority ························································································································································ 7
Master election ·································································································································································· 7
Multi-active handling procedure ······································································································································ 8
Detection ··································································································································································· 8
Collision handling ················································································································································· 10
Failure recovery ····················································································································································· 10
MAD mechanisms ·························································································································································· 10
BFD MAD (centralized IRF devices) ····················································································································· 11
BFD MAD (distributed devices) ···························································································································· 12
ARP MAD ······························································································································································· 13
ND MAD ································································································································································ 14
Setting up an IRF fabric (centralized IRF devices) ···································································································· 16
Hardware compatibility ················································································································································· 16
General restrictions and configuration guidelines ······································································································ 16
IRF fabric size and member ID restrictions ········································································································· 16
Software requirements ·········································································································································· 16
IRF physical interface requirements ····················································································································· 16
Connecting IRF ports ············································································································································· 16
Feature compatibility and configuration restrictions ·························································································· 17
Configuration backup ··········································································································································· 17
Setup and configuration task list ·································································································································· 17
Planning the IRF fabric setup ········································································································································· 18
Assigning a member ID to each IRF member device ································································································· 18
Specifying a priority for each member device ············································································································ 19
Connecting IRF physical interfaces ······························································································································· 19
Binding physical interfaces to IRF ports ······················································································································· 20
Accessing the IRF fabric ················································································································································ 21
