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Layer 2 Circuit Standards
The Junos OS substantially supports the following Layer 2 circuit standards:
- RFC 4447, Pseudowire Setup and Maintenance Using the Label Distribution Protocol (LDP) (except section 5.3)
- RFC 4448, Encapsulation Methods for Transport of Ethernet over MPLS Networks
- Internet draft draft-martini-l2circuit-encap-mpls-11.txt, Encapsulation Methods for Transport of Layer 2 Frames Over IP and MPLS Networks (expires August 2006)
The Junos OS has the following exceptions:
- A packet with a sequence number of 0 is treated as
out of sequence.
- Any packet that does not have the next incremental sequence number is considered out of sequence.
- When out-of-sequence packets arrive, the expected sequence number for the neighbor is set to the sequence number in the Layer 2 circuit control word.
- Internet draft draft-martini-l2circuit-trans-mpls-19.txt, Transport of Layer 2 Frames Over MPLS (expires September 2006).
These drafts are available on the IETF website at http://www.ietf.org/.
