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>> Table: x25LinkPresetTable - (.1.3.6.1.4.1.272.4.6.2.1)

Description: Entries in this table are created by defining a new value for the field x25LkPrIfIndex. Entries may be deleted by setting the field x25LkPrMode to the value delete. Please note, that changing the entries dont have influence on links being already established. To take effekt the according links have to be cleared either manually (see x25LinkTable) or by other means.

x25LinkPresetTable
OIDNameTypeAccess
.1IfIndexINTEGERRW
.2AddrOCTET STRINGRW
.3ModeENUMD
.4ModuloENUMRW
.5LICINTEGERRW
.6HICINTEGERRW
.7LTCINTEGERRW
.8HTCINTEGERRW
.9LOCINTEGERRW
.10HOCINTEGERRW
.11DefPktSizeENUMRW
.12DefWinSizeINTEGERRW
.13MaxPktSizeENUMRW
.14MaxWinSizeINTEGERRW
.15L2WinSizeINTEGERRW
.16L2RetrTimerINTEGERRW
.17L2RetrCounterINTEGERRW
.18L2SupervTimerINTEGERRW
.19L2IdleTimerINTEGERRW
.20NegotiationENUMRW
.23RestDelayTimerINTEGERRW
.24VC0ENUMRW
.25RewritingRuleINTEGERRW

IfIndex
The interface index of the link to be predefined. This

object identifies a row in the ifTable.
Addr
On point-to-point links, this field must be empty. On

point-to-multipoint links, this field may be empty or

set to a partners (MAC-) address. In the first case, the

definition is valid for all links on the interface

except for those having a specific predefiniton.

In the second case the definition defines the link parameters

for a specific partner.
Mode
This field indicates, whether the link is initially operated

in DTE or DCE mode. If a misconfiguration is detected,

(DTE<->DTE od DCE<->DCE) the DTE/DCE assignement is done

be means of the procedure defined in ISOxxxx.
Enumerations:
  • dte (1)
  • dce (2)
  • delete (3)
Modulo
This object indicates, whether the link should be operated

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

on the value of x25LkPrVC0, the value of -1 or Zero means

no incoming channels.
HIC
Highest Incoming Channel as seen from the DTE. Depending

on the value of x25LkPrVC0, the value of -1 or Zero means

no incoming channels.
LTC
Lowest Twoway Channel as seen from the DTE. Depending

on the value of x25LkPrVC0, the value of -1 or Zero means

no twoway channels.
HTC
Highest Twoway Channel as seen from the DTE. Depending

on the value of x25LkPrVC0, the value of -1 or Zero means

no twoway channels.
LOC
Lowest Outgoing Channel as seen from the DTE. Depending

on the value of x25LkPrVC0, the value of -1 or Zero means

no outgoing channels.
HOC
Highest Outgoing Channel as seen from the DTE. Depending

on the value of x25LkPrVC0, the value of -1 or Zero means

no outgoing channels.
DefPktSize
The 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 must be 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.
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)
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.
VC0
This object indicates, whether VC#0 shall be allowed on

the link. If this object is set to enable, VC#0 is allowed

and the value -1 shall be used to indicate the absence of

specified channels. This invalidates old configurations,

for which a value of 0 specifies the absense of a specified

channel. However, for compatibility reasons, if this object

is not set to enabled, the values -1 or 0 may be used to

specify the absence of a channel.
Enumerations:
  • enable (1)
  • disable (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.


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