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SMDS
Provides a transmission channel over V.35 (synchronous media) between the router
and an SMDS (Switched Multi-megabit Data Service) data service unit (DSU) or
switch. Displays a screen with parameters for configuring an SMDS (Switched Multi-
megabit Data Service) circuit. Results in these additional parameters:
ARP Group Address Extended (32-bit) CRC
Group Address Heartbeat Down Count
Heartbeat Polling Interval Individual Address
Max Link Latency Max Pkt Size
Min Frame Spacing Use DXI v3.2
Use Heartbeat Poll Use SNAP
V.25 bis Adapter
Provides a transmission channel for automatic dialup over a V.25 bis circuit. Results
in these additional parameters:
Adapter Record Bandwidth Reservation
Max Link Latency lMin Frame Spacing
Compression
Enables or disables packet compression to enable increased throughput over HP
Point-to-Point WAN links connecting two Hewlett-Packard routers. Compression
reduces or eliminates the need to move to higher-speed (and more expensive)
synchronous lines. In operation, individual packets are compressed in the source
router, transmitted to the destination router over the Point-to-Point circuit, and
decompressed. Compression operates with the following three circuit types:
HP Point to Point
Pt to Pt Protocol (PPP)
PPP over V.25 bis
Note: To operate properly, compression must be configured on both the source and
destination routers for the interconnecting circuit.
Limitations: On any HP series 200 or 400 router, there should be no more than than
two WAN links running with Compression enabled.
Default:
HP Point to Point: Auto
Pt to Pt Protocol (PPP): No Compression
PPP over V.25 bis: No Compression
Auto
Lets the router automatically sense the compression setting used by the remote
device and resets local compression accordingly.
HP PPC (Packet-by-
Packet)
Enables packet compression.
No Compression
Disables packet compression.
Circuit
Parameters
4
Circuit Parameters
Parameters and Options
4-9