Implementation Report for draft-ietf-idr-rfc2842bis-00.txt
reported by the IDR WG:
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The following is the list of some of the implementations of rfc2842:

Ericsson:
Interoperates with: Cisco, Juniper

Juniper Networks
Interoperates with: Cisco

Laurel Networks:
Interoperates with: Cisco, Juniper

NetPlane Systems Inc.
Interoperates with: Cisco, Juniper

Redback
Interoperates with: Cisco, Juniper

Riverstone:
Interoperates with: Cisco, Juniper, Zebra, Foundry

Unisphere Networks:
Interoperates with: Cisco, Juniper

Gated:
Interoperates with: Cisco

If a BGP speaker that supports a certain capability determines that
its peer doesn't support this capability, 2 implementations never
send a NOTIFICATION message to the peer, and 5 implementations
sometimes send a NOTIFICATION message to the peer.

Out of the 5 implementations that send the NOTIFICATION message
(when the peer doesn't support a particular capability), 2
implementations never include the Capability in question in the
message, and 3 implementations always include the Capability in
question in the message.

Five implementors reported that they always terminate BGP
session when receive the NOTIFICATION message with subcode 7
(unsupported capability).