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TERMINAL SERVERS
to compress PPP fields. It also forces the node to use a pre-configured IP
address on the port.
1 Local> DEFINE PORT 1 CHARACTER 8 PARITY EVEN STOP 1
2 Local> DEFINE PORT 1 PPP IPCP COMPRESSION ENABLED
3 Local> DEFINE PORT 1 PPP IPCP COMPRESSION STATES 8
4 Local> DEFINE PORT 1 PPP IPCP ADDRESS ENABLED
5 Local> DEFINE PORT 1 PPP LCP ACFC ENABLED
6 Local> DEFINE PORT 1 PPP LCP PFC ENABLED
7 Local> DEFINE PORT 1 PPP LCP MAP 000A0000
Figure 4-23. Advanced Settings for a PPP Defined Port.
1: Definition of Port Communication Parameters
Statement 1 defines the general communication parameters dealing with bits
per character, parity and stop bits.
2: PPP IPCP Compression Settings
Statements 2 through 4 specify the IPCP settings. This includes the use of
Van-Jacobson compression (2) where the IPCP enables the nodes to negotiate
the use of this compression method to reduce the overhead of the TCP/IP
headers. Statement 3 specifies the number of TCP connections that the
Terminal Server can decompress from the peer at any given time while 4
specifies that the Terminal Server should attempt to negotiate the IP address
for both ends of the link. If the negotiation is rejected, the IP layer will fail
to open.
3: PPP LCP Compression Settings
Command 5 deals with PPP Address and Control Field Compression and
affects the HDLC frames at the Link Layer. These frames include address and
control bytes that are obsolete on a PPP link. 5 causes the Terminal Server to
negotiate for the omission of these fields during the establishment of a LCP
connection.
For PPP links that are used only to connect two stations and that use a
single Data-Link Protocol (IP in the Terminal Server case), Protocol Field
Compression can reduce the overhead on the PPP frames. Command 6
enables the compression of the PPP Protocol Field.
Summary of Contents for LE2101A-BT-R2
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