x25 ltc




x25 ltc circuit-number

Syntax Description:


VC number from 1 to 4095, or 0 if there is no two-way VC range.

Command Description:

To set the lowest two-way virtual circuit (VC) number, use the x25 ltc interface configuration command.

When X.25 calls are placed across the interface between an X.25 DTE and the X.25 network, virtual circuits (VC) are established to carry the data associated with the calls. These VCs fall into the following categories: Permanent Virtual Circuits (PVCs), incoming-only, both-way, and outgoing-only. All VCs are numbered, and each of these categories occupies a consecutive range. All PVCs must be numerically lower than all incoming-only VCs, which in turn must be lower than all both-way VCs, which in turn must be lower than all outgoing-only VCs.


The following example sets a valid two-way virtual circuit range of 5 to 25:

Router(config)#interface serial 0/0
 Router(config-if)#x25 ltc 5
 Router(config-if)#x25 htc 25


Related commands:
x25 lic
x25 hoc
x25 htc
x25 loc
x25 hic

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