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>> Table: x25LinkTable - (.1.3.6.1.4.1.272.4.6.1.1)

Description: The x25LinkEntry is created automatically, when a link becomes active. The entry is also removed automatically, if a link becomes disconnected. It may be removed manually by setting the field x25LinkState to delete, which causes the related link to be disconnected.

x25LinkTable
OIDNameTypeAccess
.1IfIndexINTEGERR
.2AddrOCTET STRINGR
.3ModeENUMR
.4ModuloENUMR
.5LICINTEGERR
.6HICINTEGERR
.7LTCINTEGERR
.8HTCINTEGERR
.9LOCINTEGERR
.10HOCINTEGERR
.11DefPktSizeENUMR
.12DefWinSizeINTEGERR
.13MaxPktSizeENUMR
.14MaxWinSizeINTEGERR
.15L2WinSizeINTEGERR
.16L2RetrTimerINTEGERR
.17L2RetrCounterINTEGERR
.18L2SupervTimerINTEGERR
.19L2IdleTimerINTEGERR
.20StateENUMD
.21NegotiationENUMR
.22DiscDelayTimerINTEGERR
.23CallDelayTimerINTEGERR
.24RestDelayTimerINTEGERR
.25RewritingRuleINTEGERR
.26L1IdleTimerINTEGERR
.32ActSabmDelayTimerINTEGERR
.33PsvSabmDelayTimerINTEGERR

IfIndex
The index of the interface the link is running on.

See ifTable.
Addr
On point-to-multipoint interfaces, this field contains the

(MAC-)address of the partner, the link is leading to.

It is empty for point-to-point interfaces, because there

is only one partner at the other side.
Mode
This field indicates wheter the Layer 3 on top of the link

is operated in DTE or DCE mode. The difference is in the

order of VC-assignment, the handling of a call collision

and the range of allowed values of the cause field.
Enumerations:
  • dte (1)
  • dce (2)
Modulo
This field indicates whether the layer 3 on top of the link

is in modulo 8 or in modulo 128 mode.
Enumerations:
  • mod8 (1)
  • mod128 (2)
LIC
Lowest Incoming Channel as seen from the DTE. The value

-1 means no incoming channels.
HIC
Highest Incoming Channel as seen from the DTE. The value

-1 means no incoming channels.
LTC
Lowest Twoway Channel as seen from the DTE. The value

-1 means no twoway channels.
HTC
Highest Twoway Channel as seen from the DTE. The value

-1 means no twoway channels.
LOC
Lowest Outgoing Channel as seen from the DTE. The value

-1 means no outgoing channels.
HOC
Highest Outgoing Channel as seen from the DTE. The value

-1 means no outgoing channels.
DefPktSize
The default layer 3 packet size for this link.
Enumerations:
  • p128 (7)
  • p256 (8)
  • p512 (9)
  • p1024 (10)
  • p2048 (11)
  • p4096 (12)
DefWinSize
The default window size. This is always less than 8, if the

layer 3 is operated in modulo 8 mode.
MaxPktSize
The maximum allowable packet size for this link during 

X.25 packet size negotiation. If this field is set to

unrestricted, the packet size will only be limited by

the Mtu size of the interface, which is always the

upper bound for the packet size.
Enumerations:
  • unrestricted (1)
  • p128 (7)
  • p256 (8)
  • p512 (9)
  • p1024 (10)
  • p2048 (11)
  • p4096 (12)
MaxWinSize
The maximum allowable window size for this link during

window size negotiation.
L2WinSize
The layer 2 window size for this link.
L2RetrTimer
The retransmission timeout in milliseconds for the

layer 2 of this link. If a frame is not acknowledged within

this timeout, it will be retransmitted.
L2RetrCounter
The retransmission counter for the layer 2 of this link.

If a frame has been retransmitted more often than indicated

by this object, the link will be reset or disconnected,
L2SupervTimer
The link-supervision timeout in milliseconds for the

layer 2 of this link. This timer is started, when the

link gets idle. An RR poll-sequence will be initiated,

when this timeout expires.
L2IdleTimer
The idle timer in milliseconds for the layer 2 of this

link. If no VCs are established and the the link has been

idle for the time specified by this object, the link

will be disconnected. The value 0 means, the link should

not be disconnected after the last VC has been cleared.

A value of -1 means, that the link shall be kept up

even if it get disconnected from the partner on the

other end.
State
This object contains the current state of the link. The

link may be manually disconnected by setting this object

to the value delete.
Enumerations:
  • restart-pending (1)
  • restart-collision (2)
  • ready (3)
  • disc-pending (4)
  • reset-pending (5)
  • sabm-pending (6)
  • xid-pending (7)
  • sabm-wait (8)
  • l1connect-pending (9)
  • l1-ready (10)
Negotiation
This object determines whether packet-size and windows-size

parameters are negotiated for outgoing calls.  When set to

never, outgoing calls are cleared if the call parameters

differ from the default-settings. When set to when-necessary,

negotiation is only performed if the call parameters differ

from the default settings. When set to always, negotiation

is always performed.
Enumerations:
  • when-necessary (1)
  • always (2)
  • never (3)
DiscDelayTimer
The disc delay timer in milliseconds for the layer 2 of

this link (only outgoing links). This timer specifies the

time interval between receiving of layer 2 disconnect and

actual disconnect of link. If the partner want to

disconnect the layer 2 and the time specified by this object

expired, the link will be disconnected. The value 0 means, 

the link will be disconnected immediately after receiving of

disconnect.
CallDelayTimer
The call delay timer in milliseconds for the layer 3 of

this link (only outgoing link). This timer specifies the 

time interval between restart procedure completion and

virtual call setup. If restart procedure is completed 

and the time specified by this object expired, call packet 

will be sent. The value 0 means, call packet should be sent 

immediately after completion of restart procedure.
RestDelayTimer
The Restart delay timer in milliseconds for this link.

This timer specifies the time interval between 

establishment of layer 2 and sending of restart packet. 

If layer 2 is established and the time specified by this 

object expired, restart packet will be sent. 

The value 0 means, restart packet should be sent immediately 

after establishment of layer 2.
RewritingRule
This Object specifies a rewriting rule in the X25 Rewrite

table. The call packet will be processed according

to this rewriting rule before the call is being routed.

If this value is set to zero, no rewriting will take

place.
L1IdleTimer
The idle timer in milliseconds for the layer 1 of this

link. If layer 2 is disconnected and the time specified 

by this object expired, the layer 1 will be disconnected. 

The value 0 means, the layer 1 should not be disconnected 

after the layer 2 is disconnected.

A value of -1 means, that the layer 1 shall be kept up

even if it get disconnected from the partner on the

other end.
ActSabmDelayTimer
The sabm delay timer in milliseconds for this link (only 

dialup outgoing link). This timer specifies the time interval 

between establishment of layer 1 and sending of SABM packet.

If layer 1 is established and the time specified by this 

object expired, SABM packet will be sent. The value 0

means, SABM packet should be sent immediately after 

establishment of layer 1. The value -1 means, SABM packet

should not be sent by dialup outgoing link.
PsvSabmDelayTimer
The passive sabm delay timer in milliseconds for this 

link (only dialup incoming link). This timer specifies the time

interval between establishment of layer 1 and sending of SABM 

packet. If layer 1 is established and the time specified by 

this object expired, SABM packet will be sent. The value 0 

means, SABM packet should be sent immediately after 

establishment of layer 1. The value -1 means, SABM packet 

should not be sent by dialup incoming link.


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