Bridge Control Protocol; Network Protection Using Upsr, 1+1 Linear And Blsr - Nortel NTRN10AN Planning Manual

Figure 2-35
2x100BT-P2P logical datapath overview
10/100BT
PPP Frame
Flag Add Ctrl Proto
(1) (1) (1)
BCP Frame
Ethernet Frame

Bridge Control Protocol

The Bridge Control Protocol (BCP) is negotiated when packets for transport
are Ethernet. BCP is responsible for configuring, enabling and disabling the
bridge protocol modules on both ends of the link. Negotiation of BCP will not
start until LCP negotiation has been completed and the NCP negotiation phase
has been reached.

Network protection using UPSR, 1+1 linear and BLSR

Bandwidth management refers to the method in which the signal from the
100BT-P2P card interfaces with the OPTera Metro 3500 SONET paths.
Generally an STS connection is formed between the 2x100BT-P2P circuit
pack and another circuit pack on the shelf.
Planning and Ordering Guide—Part 1 of 2 NTRN10AN
Operation, administration, and maintenance (OAM) features 2-69
Ingress
MAC
PHY BCP
Egress
(2)
Flags MAC type
(1) (1)
Preamble SFD
(7) (1)
HDLC
PPP
PPP Payload
(<1592)
Data
(64..1590)
Data
DA SA T/L
(6)
(2)
(6) (46..1576)
DA SA T/L
Data
(2)
(6) (46..1576)
(6)
Rel 12.1 Standard Iss 1 Apr 2004
SONET
STS1/3c
FCS Flag
(1)
(4)
FCS
(4)
FCS
(4)