Configuring the ECN330-switch
318 1553-KDU 137 365 Uen D 2006-06-16
Points of Non-compliance with the Martini Draft
The ECN330-switch does not comply the following items in the draft-martini-
l2circuit-trans-mpls-16:
• Withdrawing label after port disabled
[2.2.5 Martini] – If the Label Switching Router (LSR) detects a failure on
the Ethernet physical port, or the port is administratively disabled, it
MUST withdraw the label mappings for all VCs associated with the port.
DOES NOT COMPLY – L2MPLS will not withdraw the label mapping for
all VCs associated with the port if the port is administratively disabled.
• Missing support for Control Word
[2.2.6 Martini] – When transporting Ethernet and VLAN frames, the
Martini Control Word is optional.
It must be supported to both send and receive without the Control Word!
And it must be supported to receive a Control Word from an
implementation having implemented the optional Control Word, and the
egress R2 (Martini tunnel end-point, defined in the draft and used in 3.1
Martini Draft Introduction) must be aware of this from configuration (or
Label Distribution Protocol - LDP signalling)!
It must also be specified how to handle a received sequence number (in
the Control Word), is it ignored or is it processed according to the
Martini-draft!
DOES NOT COMPLY – L2MPLS does not support Martini Control
Word. (T, E, C, U and "Optional sequence number") The implementation
does not comply with the Martini draft at this point. An MPLS packet with
a Control Word cannot be received correctly. It will just be treated as a
normal L2MPLS packet. The ECN330-switch will use the Control Word
as the first 32 bits of CDA MAC (destination MAC address of original
packet). The CDA, CSA (source MAC address of original packet),
CVLAN tag and payload will all be mismatched.
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