Alcatel-Lucent 1643 AMS Applications And Planning Manual page 264

SHDSL Overview
• Ethernet Dropped Frames due to Error (ppDE)
• Ethernet Incoming Number of Frame with collisions (eINFC)
• Ethernet Outgoing Number of Frame with collisions (eONFC)
• Ethernet Forwarded Discarded Frames due to overflow in egress direction
(eFDFO).
• Ethernet Outgoing Discarded Frames due to lifetime end (eODFT).
Note that the above Ethernet Traffic and Error PM bins are applicable for both LAN
and WAN ports of the NTU. However, the WAN port does not support pPPS, eINFC,
and eONFC counters.
Note: The PM counters -pCbR, -pCbS and -ppDE are supported since 1643 AM / 1643
AMS Release 6.1.
NTUs Bridge Mode Provisioning
The 1643 AM / 1643 AMS supports bridge mode provisioning to the Ethernet NTU.
The following bridge modes are supported.
• Self learning bridge (IEEE 802.1D)
• V-LAN bridge (IEEE 802.1Q)
• Provider bridge (IEEE 802.1ad)
NTU V-LAN Bridge Mode Support
The 1643 AM / 1643 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.
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12-18 Alcatel-Lucent - Proprietary
See notice on first page
SHDSL features
365-312-801R7.2
Issue 3, May 2007