show sdlc link The show sdlc link command displays the values of the attributes for the SDLC Link subentity. The SDLC Link subentity defines the data link attributes that are shared by its Station subentities. Ex, ncl> show sdlc link sdlc-0 all status
1 – Identifier
Name A Simplename that is unique among the SDLC Link
entities maintained by the SDLC module. The network
manager specifies Name when the Link is created.
2 – Status
UID Displays the entity's unique identifier, which is
generated when the the entity is created.
State Displays the operational state of this SDLC Link
subentity. Possible states are
Inoperable The Link cannot be enabled.
Off You have issued a disable command for
this Link. The Link is in the
inactive or pending inactive state.
On You have issued an enable command for
this Link.
Role Displays the role this Link has taken. Values for
Role are:
Idle No role has been assumed yet.
Primary The role is that of a primary Link.
Secondary The role is that of a secondary Link.
3 – Characteristics
Line local entity Displays the Modem Connect Line on
name which the SDLC protocol operates.
You must specify a value in
order to enable the link. For more
information about Modem Connect
Line refer to the DECnet-Plus
Network Control Language Reference.
Capability primary | Displays the capability of the
secondary | Station subentities of this Link
negotiable entity. Negotiable stations can
become either primary or secondary.
The default is negotiable.
Configuration pointtopoint | Displays whether the Link supports
multipoint only a point-to-point connection or
can also support a multipoint
connection. Multipoint supports one
or more than one connection. The
default is pointtopoint. The Peer
Server does not support multipoint
primary connections.
Connection nonswitched | Displays whether the Link supports
Type switched switched or nonswitched connections.
The default is nonswitched.
Receive (1-32764) Displays the maximum frame size
Frame (excluding the header) that can be
Size received on the line represented by
this Link. The default is 1000.
Reply Timer (100-60000) Displays the time (in milliseconds)
to wait for an acknowledgment before
starting the recovery procedure. The
default is 3000.
Retry (0-128) Displays that, when the Link is
Maximum secondary, this is the maximum
number of times a frame is
retransmitted before assuming a
fatal error. When the Link is
primary, this is the number of times
that a retry will be tried. The
default is 15.
Poll Pause (0-60000) Displays the time in milliseconds to
pause when the end of the polling
list is reached. Used only when the
link is primary. The default is 200.
Service (1-255) Displays the maximum number of
Limit regular scans of the Service Order
Table for secondary Stations that
will be made before a special scan
is made. Used when the Link is
primary. The default is 4. Not
used at this time.
TWA Send no | yes Displays whether the Link provides
Priority priority for outbound services when
configured for Two-Way Alternating
(half-duplex) data transfer in the
multipoint primary mode. Yes
means that PIUs that arrive for
transmission while data is being
received are transmitted immediately.
No, the default, means that outbound
transmission is strictly determined
by the position of station service
order entries in the service order
table.
This attribute is not relevant to
SDLC point-to-point operations. Not
used at this time.
4 – Counters
Group Polls The number of unnumbered group polls received on
this link.
Frame Receive The number of times the physical layer encountered
Errors an error trying to receive a frame.
Underlying The number of times the Link's underlying Line was
Lines deleted after the Link had established a connection
Deleted to it.
Creation Time The time that the SDLC Link subentity was created.