Enterasys Networks CSX6000 - Manual (Page 251)

Central Site Remote Access Switch 251
C ONFIGURING A LTERNATE A CCESSES
X.25 Accesses
N ONSTANDARD D EFAULT T RANSMIT W INDOW S IZE
The number of frames that a DTE can send without receiving an acknowledgment. Using
modulo 128, the DTEs can send up to 127 frames without receiving an acknowledgment.
Using modulo 8, the DTEs can send up to 7 frames without receiving an acknowledgment.
The default value for both modulo 8 and modulo 128 is 2.
N ONSTANDARD D EFAULT R ECEIVE W INDOW S IZE
The number of frames that a DTE can receive without receiving an acknowledgment. Using
modulo 128, the DTEs can receive up to 127 frames without receiving an acknowledgment.
Using modulo 8, the DTEs can send up to 7 frames without receiving an acknowledgment.
The default value for both modulo 8 and modulo 128 is 2.
N ONSTANDARD D EFAULT T RANSMIT P ACKET S IZE
The size of a packet that a DTE can transmit. The choice of a packet size must be weighed
against the requirements for larger buffers at all the machines that process the packet.
Larger packet sizes reduce the opportunity for other devices to share the channel. On the
other hand, a larger packet reduces the ratio of overhead fields to user data. The default
transmit packet size is 128 bytes.
N ONSTANDARD D EFAULT R ECEIVE P ACKET S IZE
The size of a packet that a DTE can receive. The choice of a packet size must be weighed
against the requirements for larger buffers at all the machines that process the packet.
Larger packet sizes reduce the opportunity for other devices to share the channel. On the
other hand, a larger packet reduces the ratio of overhead fields to user data. The default
transmit packet size is 128 bytes.
N ONSTANDARD D EFAULT T RANSMIT T HROUGHPUT C LASS
Transmit throughput describes the maximum amount of data that can be sent through the
network, when the network is operating at saturation. Factors influencing throughput are
line speeds, window sizes, and the number of active sessions in the network. The default
value is 19,200 BPS.
N ONSTANDARD D EFAULT R ECEIVE T HROUGHPUT C LASS
Receive throughput describes the maximum amount of data that can be received through
the network, when the network is operating at saturation. Factors influencing throughput
are line speeds, window sizes, and the number of active sessions in the network. The
default value is 19,200 BPS.
X.25 C HARGING -R ELATED F ACILITIES
These facilities are used to place charging-related restrictions upon incoming and outgoing X.25
calls.
I NCOMING C ALLS R EVERSE C HARGING
This parameters allows you to choose whether the DTE (the CyberSWITCH) should accept
incoming X.25 calls that request reverse charging. The default configuration is to not allow
incoming X.25 calls to request reverse charging.
O UTGOING C ALLS R EVERSE C HARGING
This parameters allows you to choose whether the DTE (the CyberSWITCH) should be able
to request reverse charging for outgoing calls. The default configuration is to not allow
outgoing X.25 calls to request reverse charging.