Address Resolution - HP 200 Series Services And Applications

Address Resolution

Internet RFC 1293, "Inverse Address Resolution Protocol", describes
additions to ARP (Address Resolution Protocol) that are intended to reduce
the amount of address resolution traffic in a Frame Relay network. An ARP
packet is sent whenever a TCP/IP system wants to communicate with a
system it hasn't communicated with recently. The sender of the ARP needs
to determine the hardware address of the destination system. Normally this
packet is broadcast to all machines on a network.
Inverse ARP reduces address resolution traffic by directing an Inverse ARP
packet to each system when its DLCI becomes active. What Inverse ARP
does is to match up an unknown IP address with a known hardware address
(DLCI). When enabling Inverse ARP on HP routers, it is a good idea to
disable the ARP Cache Timer of the Frame Relay circuit in the network
interface definition using the router's Configuration Editor.
Protocol Analysis/Testing
The HP PT502 and HP PT302 are high-performance wide-area network
protocol testers, which provide powerful monitoring, analysis, emulation,
and conformance testing capabilities for a variety of protocols including
Frame Relay at speeds up to 2 Mbit/s. The PT502 is a multiport protocol
tester designed for lab use and high-level network maintenance. The PT302
is a companion of the PT502; it has a single test port and is well suited for
field use.
These protocol testers may be used to:
Monitor Frame Relay protocol between a user device and the Frame
Relay network. Triggers, filters, and detailed decoded displays
reduce troubleshooting time. All identified protocol violations are
highlighted in red, allowing the user to identify the problem quickly.
Perform statistical analysis of network performance. Statistical
analysis is useful for predicting network usage versus capacity,
predicting growth trends, and preventing network overload
conditions.
Linking Up with Frame Relay
Address Resolution
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