Frame Relay Multipoint Topology Support - Avaya G250 Administration

Configuring WAN interfaces
Figure 13: USP Port - PPP Protocol
Figure 14: USP Port - Frame Relay Protocol
the USP port is encapsulated using the frame relay protocol, and is sent via a frame relay serial
interface and sub-interfaces over the single IP interfaces defined using DLCI.
Figure 14: USP Port - Frame Relay Protocol

Frame Relay multipoint topology support

The Avaya G250/G350 Media Gateway supports point-to-point frame relay connections. To
enable you to use the G250/G350 as an endpoint in a Point to Multi-Point (PTMP) topology, the
G250/G350 supports inverse ARP replies. The G250/G350 responds to inverse ARP queries
received on frame relay sub-interfaces with the proper inverse ARP replies.
When you connect the G250/G350 as an endpoint in a PTMP configuration, you need to
increase the OSPF timers manually. Use the ip ospf network point-to-multipoint
command in Interface Serial context to increase the OSPF timers with the following values:
Increase the OSPF Hello Interval to 30 seconds
●
Increase the OSPF Dead Interval to 120 seconds
●
For more information on OSPF, see
132 Administration for the Avaya G250 and Avaya G350 Media Gateways
on page 132 illustrates a USP port. All data from
Configuring OSPF on page 348.