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To set the MTU for a location, use the following command:
Command> set location Locname mtu MTU
Configuring Compression
Compression of TCP/IP headers can increase the performance of interactive TCP sessions
over network hardwired asynchronous lines. Lucent implements Van Jacobson TCP/IP
header compression and Stac LZS data compression. Compression is on by default.
Compression cannot be used with multiline load balancing, but can be used with
Multilink PPP.
Compression must be enabled on both ends of the connection if you are using SLIP.
With SLIP, TCP packets are not passed if only one side of the connection has
compression enabled. For PPP connections, the PortMaster supports both bidirectional
and unidirectional compression. Refer to RFC 1144 for more information about header
compression.
The PortMaster supports Stac LZS data compression only for PPP connections with
bidirectional compression. Stac LZS data compression cannot be used for SLIP
connections.
To configure compression for a location, use the following command:
Command> set location Locname compression on|off|stac|vj
Table 7-2 describes the results of using each keyword.
Table 7-2
Keyword
on
off
stac
vj
To display compression information about a location, enter the following command:
Command> show S0
Setting the Idle Timer
You can set the idle timer for a location with manual or on-demand connections. This
timer defines the length of time the line can be idle, with no network traffic in either
direction, before the PortMaster disconnects the connection. You can set the idle time in
seconds or minutes, to any value from 0 to 240. The default setting is 0 minutes. If the
Configuring Dial-Out Connections
Keywords for Configuring Compression
Description
Enables compression. The PortMaster tries to negotiate both Van
Jacobson and Stac LZS compression. This is the default.
Disables compression.
Enables Stac LZS data compression only.
Enables Van Jacobson TCP/IP header compression only.
Configuring the Location Table
7-7
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Troubleshooting
