430 CHAPTER 26: LAPB AND X.25 CONFIGURATION COMMANDS
Note that if no logical channel identifier is specified, the information about all
virtual circuits is displayed.
There are three types of virtual circuits as follows:
■An SVC (switched virtual circuit) is set up temporarily by X.25 through calling as
required.
■A PVC is configured manually and exists regardless of the data transmission
requirement.
■When the device works in X.25 switching mode, virtual circuits will be set up in
order to transfer data.
Information about the three types of virtual circuits can be shown with this
command, and only some fields of their outputs differ.
Example # Display X.25 VC information.
<Sysname> display x25 vc
Interface: Serial2/0
SVC 1
State: P4(transmit)
Map: ip 10.1.1.2 to 130
Window size: input 2 output 2
Packet Size: input 128 output 128
Local PS: 5 Local PR: 5 Remote PS: 5 Remote PR: 4
Local Busy: FALSE Reset times: 0
Input/Output:
DATA 5/5 INTERRUPT 0/0
RR 0/0 RNR 0/0 REJ 0/0
Bytes 420/420
Send Queue(Current/Max): 0/200
Interface: Serial2/1/0
SVC 10
State: P4(transmit)
SVC <--> Serial2/0 SVC 60
Window size: input 2 output 2
Packet Size: input 128 output 128
Local PS: 0 Local PR: 0 Remote PS: 0 Remote PR: 0
Local Busy: FALSE Reset times: 0
Input/Output:
DATA 5/5 INTERRUPT 0/0
RR 0/0 RNR 0/0 REJ 0/0
Bytes 420/420
Send Queue(Current/Max): 0/200
Interface: Serial2/0-1.1.1.1
PVC 1
State: P/Inactive
XOT PVC <--> Serial2/0 PVC 1 connected
Window size: input 2 output 2
Packet Size: input 128 output 128
Local PS: 0 Local PR: 0 Remote PS: 0 Remote PR: 0
Local Busy: FALSE Reset times: 0
Input/Output:
DATA 0/0 INTERRUPT 0/0
RR 0/0 RNR 0/0 REJ 0/0
Bytes 0/0