MIMP protocol states

There are five MIMP states:

• discovery

• notEligible

• eligible

• standby

• master

The five MIMP states are described as follows:

• discovery

  Upon enabling MC-IPsec for the tunnel-group, for example:

  1. system starts up

  2. no shutdown MC-IPsec peer

  3. no shutdown MC-IPsec tunnel-group

  Functionally, this means blackhole traffic to the ISA and no shunting.

  If the peer is reached before the discovery-interval (configurable) has expired, then the state is changed to whatever the MIMP decides

  If the peer is not reached before the discovery-interval has expired, then the state is changed to eligible or notEligible depending on the oper-status of the tunnel-group.

• notEligible

  The tunnel-group is operationally down. Functionally, this means blackhole traffic to the ISA and no shunting.

• eligible

  The peer is not reachable or the associated BFD session is down but the tunnel-group is operationally up. Functionally, this means the ISA processes traffic.

• standby

  Peer is reachable, elected standby. Functionally, this means blackhole traffic to ISA and shunting if possible.

• master

  Peer is reachable, elected master. Functionally, this means the ISA processes traffic.