NS3000/iX NMMGR Screens Reference Manual - Edition 8 (36922-90038)

Chapter 8 169

Token Ring Network Interface Conﬁguration Screens

Token Ring Network Interface Conﬁguration

Fields

Network

segment size This ﬁeld speciﬁes the largest packet that will be sent

by the token ring device. The only reason for entering a

value smaller than 1984 is to make better use of

memory for those systems where it is known that upper

layer services will always send shorter messages. Note

that whenever packets larger than the network

segment size are sent, they will be fragmented to the

network segment size, thus incurring fragmentation

overhead at the source and assembly overhead at the

destination node.

Default value: 1984 bytes

Range: 300–1984

Number of

outbound buffers

This ﬁeld speciﬁes the number of buffers to be allocated

for outbound data. Outbound buffers are used for

outbound data packets and are held by the transport

until they are acknowledged by the destination node.

Underallocation may adversely affect TCP throughput.

Overallocation may waste core memory.

Related screen:

• NETXPORT.GPROT.TCP

The maximum number of connections is conﬁgured

here. If it is increased, consider increasing the

number of outbound buffers also.

Default value: 128

Range: 128–4096

Load network