Nortel Networks 3500, NTRN10AN manual Facility attributes, Virtual concatenation, Engineering rules

Operation, administration, and maintenance (OAM) features 2-85

Virtual concatenation

When the VCAT attribute in the WAN port is set to ENABLE, up to 7 STS3c or 21 STS1 connections can be cross connected to a 2xGigE/FC-P2P WAN port.

—STS-1-nv, n = 1 through 21 or,

—STS-3c-nv, n = 1 through 7

Engineering rules

The following engineering rules apply to the bandwidth management capabilities of the 2xGigE/FC-P2P circuit packs:

•When the VCAT attribute of the WAN port 1 and port 2 is set to DISABLE, if a STS1 granularity connection is made against one of these ports, the only valid connection that can be made against the other WAN port is STS1 connections.

•When the VCAT attribute of the WAN port 1 and port 2 is set to DISABLE, if an STS-nc (STS3c, STS12c or STS24c) connection is made against one of these ports, the only valid connection that can be made against the other WAN port is STS-nc connections.

•When the VCAT attribute of WAN port 1 and port 2 is set to ENABLE, both ports must have the same RATE attribute.

Facility attributes

The 2xGigE/FC-P2P circuit pack supports Ethernet, FC and WAN facilities.

Ethernet facility

Table 2-13 on page 2-85, lists facility parameters supported by the 2xGigE/FC-P2P Ethernet port.

Table 2-13

2xGigE/FC-P2P Ethernet port facility signal attributes

Signal Attribute	Definition	Values	Access
		(See Note 1)	(see Note 2)
AN	Auto-Negotiation	Enable, Disable	R/W
(Auto-Negotiation)
ANSTATUS	Auto-Negotiation Status	InProgess, Completed,	R/O
(Auto-Negotiation		Disabled
Status)
ANETHDPX	Negotiated Duplex Operation, when AN is	Full	R/O
(Negotiated Duplex	enabled
Operation)
ANSPEED	Negotiated speed, when AN is enabled	1000	R/O
(Negotiated Speed)

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004