Lucent Technologies PortMaster - Manual (Page 98)

Configuring a Port for a Dedicated Connection
5-22 PortMaster Configuration Guide
Setting the Protocol
The network protocol for the hardwired port can be set for PPP packet encapsulation or
SLIP encapsulation as described in “PPP and SLIP Connections” on page 5-19. If you
want to use PPP you have your choice of the following options:
• PPP with IP packet routing
• PPP with IPX packet routing
• PPP with both IP and IPX packet routing
You should select a protocol that is compatible with your network configuration.
Setting the MTU Size
The maximum transmission unit (MTU) defines the largest frame or packet that can be
sent through this port. If a packet exceeds the specified MTU size, it is automatically
fragmented if IP or discarded if IPX. PPP connections can have an MTU set from 100 to
1500 bytes. SLIP connections can have an MTU set from 100 to 1006 bytes. The remote
host can negotiate smaller MTUs if necessary.
The MTU is typically set to the maximum allowed for the protocol being used, either
1500 or 1006 bytes. Setting smaller MTU values is useful for interactive (typing) users
who send small packets, while larger values are better for multi-line load balance.
Setting the Destination IP Address and Netmask
The IP address or hostname of the machine on the other end of the hardwired
connection must be entered to identify the port destination. For PPP, the IP destination
can be set to negotiated (255.255.255.255). You can optionally specify the netmask of
the system on the other end of the hardwired connection.
Setting the IPX Network Number
IPX traffic can be passed through a port if you assign an IPX network number to the
hardwired network connection.
Note – The IPX network number must be different from the IPX networks used on the
Ethernets on either end of the connection.
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