Nortel Networks OPTera Metro 3500 - Manual (Page 108)

2-70 Operation, administration, and maintenance (OAM) features
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
When connecting to OCn circuit packs, the following protection schemes
supported by the OCn circuit pack can be used.
• UPSR: 2WAY (unprotected), 2WAYPR, 1WAY (unprotected), 1WAYPR
• 1+1 linear: 1WAY, 2WAY
Note: 1WAY protection schemes support another 1WAY connection to
travel back from the same circuit pack.
• BLSR: 2WAY (protected), 2WAYPR(for interconnecting BLSR or UPSR
rings)
OAMP support
Similar to traditional TDM service, the following features are supported:
• Connection Identifier (CID) is supported.
• STS1 and STS3c path trace are supported.
Ethernet Operational Measurements
The Ethernet Operational Measurements collected by the 2x100BT-P2P circuit
packs can be divided into two groups: Generic Interface Operational
Measurements (based on the Interfaces Group MIB, RFC 1213, RFC 2233,
RFC 2863) and Ethernet Specific Operational Measurements (based on RFC
2665 Ethernet-Like MIB).
The 2x100BT-P2P circuit packs collects Generic Interface Operational
Measurements (Generic Interface OMs) which contain a set of counters not
specific to any interface type. It is also used for the WAN side of the card. It
consists of 64 bit octet and packet counters for all interface speeds. The
counters are combined for unicast, multicast, and broadcast packets.
Table 2-16 on page 2-91 defines the generic interface Operational
Measurements (OM) for LAN interface supported on the 2x100BT-P2P a
circuit pack.
Table 2-17 on page 2-92 defines the generic interface Operational
Measurements (OM) for WAN interface supported on the 2x100BT-P2P
circuit packs.
Table 2-18 on page 2-93 defines the Ethernet specific Operational
Measurements (OM) supported by the 2x100BT-P2P circuit packs
Note: Dribble bit errors are not counted.
For a description of the 2x100BT-P2P circuit pack, see 2x100BT-P2P circuit
pack on page 3-91 .