Visara CNA-8000 Installation - Manual (Page 71)

CNA-8000 Installation and Configuration
707158-003 5-7
Drop ID: The ‘Drop ID’ is the name that is being given to this drop, and is the same
name that will be added to the list of drops when this definition is saved. The name can
be most any text string (alphanumeric characters plus dash, underscore, and period
characters), and should be created by the administrator to provide a name for the drop
that is most useful to describe what or where it is.
Remote MAC Address: This is the LAN address of the platform that the CNA-8000 is
talking to on this drop. This address might also be referred to as the remote platform’s
hardware address or LLC address. If this drop is defined to be dynamic this field will be
grayed out and will not be required. The MAC address should be entered in the format of
6 hex bytes separated by colons. Example: 40.00.11:74:00:0A
Local SAP: This option defines the local Service Access Point address that is assigned
by the CNA-8000 for use for communications with the remote platform. Refer to the
‘SAP Assignments’ section above for selecting a valid SAP value. Note that if you have
the Dynamic Connections option selected, the SAP used for the dynamic connections
should be different than the one used for static connections.
Remote SAP: This option defines the remote Service Access Point address that is
configured on the remote platform that the CNA-8000 is communicating with. Refer to
the ‘SAP Assignments’ section below for a discussion on selecting valid SAP values. If
this drop is defined to be dynamic this field will be grayed out and will not be required.
Max Transmit Frame Size: This value represents the maximum size frame (including
TH, RH, and RU) that may be sent in a single packet over the LLC link. Most Token
Ring LLC circuits are limited to a maximum frame size of 4105, but some (usually older)
platforms may be limited to a smaller maximum frame size. Using a smaller value than
what is supported by the session partner will work, but will result in the transmission of
more packets than if a larger value is set. The minimum size for a PU type 2 is 265. Note
that if the traffic is to cross an Ethernet LAN segment to get to the session partner, then
the maximum value must be restricted to that handled by Ethernet (a value of 1500).
Receive Window Size: This is the maximum number of packets in an LLC conversation
with a session partner that can be received, before an LLC acknowledgement must be
sent. The default value for this option is 1. Refer to the ‘Window Size Selection’ section.
Transmit Window Size: This is the maximum number of packets that will be sent
before requiring an LLC acknowledgement. The default value for this option is 2. Refer
to the ‘Window Size Selection’ section.
Network Protocol: The only valid setting available for this option is ‘XCA’.
Keepalive Timeout (secs): Keepalive is used to determine when the session partner
goes away. Any value other than zero enables the feature and determines how often a
keepalive packet is to be sent.