PfR:MC-BR-Versions

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General Rule:

  • The major version numbers need to be the same
  • The minor version of the BR needs to be less than or equal to the minor version of the MC for a connection to be established (It can be more than one version away).


  • Cisco 7600
IOS Release MC Version BR Version
12.2(33)SRE 3.0 3.0


  • ISR
IOS Release MC Version BR Version
15.0(1)M 3.0 3.0
15.1(1)T 3.0 3.0
15.1(2)T 3.0 3.0
15.1(3)T 3.0 3.0
15.1(4)M 3.0 3.0
15.2(1)T (future) 3.1 3.1
15.2(2)T (future) 3.1 3.1


  • ASR 1000
IOS-XE Release IOSd Release MC Version BR Version
2.6.2 (RLS6) N/A 3.0
3.1.1 (RLS7) 15.0(1)S N/A 3.0
3.2.0 (RLS8) 15.1(1)S N/A 3.0
3.3.0 (RLS9) 15.1(2)S 3.1 3.1
3.4.0 (RLS10) - Future 15.1(3)S 3.1 3.1

Rating: 5.0/5 (3 votes cast)

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