Architecture; Features; Figure 4. Resilient Nni Architecture - Bay Networks Baystream 7 Notice

BayStream 7.3 Documentation Change Notice

Architecture

Figure 4
connected by the Resilient NNI across Link 1 and Link 2. Link 1 is the primary
link and Link 2 is the backup link. The two physical links are connected to
different ports on different slots of a single node in each of the two networks. The
nodes on either side of the RNNI are configured to operate in complementary
master and slave modes of operation.
The NNI gateway node belonging to Network A is configured to operate in the
master mode, and has ports A1 and A2 on different slots connected to Link 1 and
Link 2 respectively. Similarly, the NNI gateway node belonging to Network B is
configured to operate in the slave mode, and has ports B1 and B2 on different
slots connected to Link 1 and Link 2 respectively.
Figure 4. Resilient NNI Architecture

Features

Resilient NNI supports the following features:
• Single-port HSSI line cards
• Annex A link management type
• Bi-directional procedures
• SVCs using FRF.4 signaling where BayStream is configured as a UNI DCE
device
• Resilient RNNI Slave Mode operations only
• Both SVCs and PVCs on the RNNI interface
14
shows the architecture of Resilient NNI. Network A and Network B are
Network A
Frame relay switch
A1
A2
Operates in
master mode
BayStream Multiservice Software Version 7.3
Resilient NNI Network B
Frame relay switch
Link 1
B1
B2
Link 2
Operates in
slave mode
BYS0091A
115385-D Rev 01