26 TN3270 Server Commands
link
link
Use the link DLUR SAP configuration command to define and activate a link to a host. Use the no
form of this command to delete the link definition.
link name [rmac rmac] [rsap rsap]
no link name
Syntax Description
Defaults
No DLUR link is defined.
The default remote SAP address is 04 (hexadecimal).
Command Mode
DLUR SAP configuration
Usage Guidelines
The combination of rmac and rsap must be unique within the DLUR SAP function. These values
can only be changed by deleting the link definition, using the no link command, and recreating the
link definition.
For a link via a channel on this CIP, the TN3270 server and the hosts should open different adapters
in the same internal LAN. Using different adapters avoids any contention for SAP numbers, and is
also necessary if you configure duplicate MAC addresses for fallback CSNA access to the host. By
configuring the adapters in the same internal LAN, you achieve the same performance—bypassing
the DLC stacks—as looping back on a single adapter.
Examples
The following command defines a link name and a remote SAP address:
link LINK5 rsap 08
name
Link name, from one to eight alphanumeric characters. The
first character must be alphabetic. The name must be
unique within the DLUR function.
rmac
(Optional) Remote MAC address of the form
xxxx.xxxx.xxxx in hexadecimal. If not specified, a loopback
link to another SAP on the same internal LAN adapter is
assumed.
rsap
(Optional) Remote SAP address, 04 to FC in hexadecimal.
The rsap value must be even and should be a multiple of 4,
but this requirement is not enforced. The rsap value default
is 04.
