
Frame Relay Overview
117376-B Rev. 00 2-9
Multiple Service Records
Interfaces can have multiple service records, and each service record can contain
multiple PVCs, SVCs or combinations of PVCs and SVCs.
Adding and Moving PVCs
You can add PVCs to a service record either individually, or in a range. You can
also move PVCs on the same interface from one service record to another
individually or as a group. For instructions, see Cha
pter 3, “Customizing Frame
Relay.”
Frame Relay Access Modes
Bay Networks describes frame relay PVCs in terms of three access modes: group,
direct, and hybrid. The following topics define each of these modes within the
context of service records.
Group Access Mode
Group mode describes a service record with multiple VCs. It represents a true
point-to-multipoint circuit. In group access mode, upper-layer protocols treat each
frame relay network interface as a single access point to the switched network.
The upper-layer protocols use a single network address to send all traffic destined
for the switched network to the frame relay network interface.
When you configure each router, you assign only one network address (for
example, an IP or IPX address) to the frame relay interface, not to each VC. The
Data Link Control Management Interface (DLCMI) dynamically configures VCs
on the default service record; you do not need to explicitly configure them.
Service records in group mode:
• Allow multiple groups of PVCs per frame relay connection.
• Enable you to gather multiple VCs for each network protocol into a separate
group or service record, thereby reducing the number of buffers needed per
circuit during broadcasts.
• Lower customer costs by creating multiple broadcast domains.
Comentarios a estos manuales