NTUs Bridge Mode Provisioning
The 1643 AM/AMS supports bridge mode provisioning to the Ethernet NTU.
The following bridge modes are supported. They are:
• Self learning bridge (IEEE 802.1D)
• V-LAN bridge (IEEE 802.1Q)
• Provider bridge (IEEE 802.1ad)
NTU V-LAN functionality (Bridge Mode) Support
The 1643 AM/AMS provides enhanced PM support for third party NTUs. It supports a
two port Ethernet SHDSL modem (NTU) which is connected via 1 to 4 parallel
TU-12s over SHDSL mapped links. The Enhanced NTU ETH LAN port PM counters
are available via the QD2-Lite extension. The Ethernet traffic bandwidth is optimized
by GFP-F encapsulation and VC-12-Xv virtual concatenation using LCAS.
When an NTU works in V-LAN bridge mode (IEEE802.1Q), the NTU’s V-LAN table
is used to assign the VID to ETH ports and WAN ports. The QD2-Lite message is only
used to write to the table; a readout of the existing entries is not provided. The
network element is the configuration master and retains a V-LAN table of its own. It
ensures by corresponding commands that the V-LAN table in the NTU matches the
V-LAN table in the AM.
Using the V-LAN Entry command, individual entries in the table can be added,
modified or deleted. This command is used when individual V-LAN entries are
changed by the EMS.
A table entry for a VID is deleted by a V-LAN Table Entry command in which all
WAN(x) bits and LAN(x) bits are set to ″0″. The V-LAN Table command can be used
to copy the entire V-LAN table from the AM to the NT10ETH. The entire V-LAN
table is deleted by an ″empty″ V-LAN Table command that contains no table entry.
The length of such a message is L=2.
After the restoration of an SDSL link, the NE (AM) must refresh the entire V-LAN
table with the V-LAN Table command. Refreshing the V-LAN table with the V-LAN
Table command is not allowed to result in the interruption of individual or of all
V-LANs.
NTU LPT functionality Support
The 1643 AM/AMS supports Link Pass Through (LPT) functionality via EOC
commands.
Users can enable or disable LPT using the following parameters.
• CA-CSF: GFP Client Signal Fail Signalling
• CA-SSF: Disabling LAN interfaces during WAN connection failure
Traffic provisioning
SHDSL feature
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8-14
Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007
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