HP Comware 5 Debug Manual Vol 2

Field
Description
CMD/RSP Command frame/response frame.
MOD modulo Modulo.
encapsulation-type ENCAP
Encapsulation type:
• SINGLE—Single protocol.
• MULTI—Multiple protocols.
IFRAME Frame type.
NS Sending sequence number.
NR Receiving sequence number.
P Polling bit.
LEN Frame length.
Table 4 describes the output fields and messages for the debugging lapb us-frame command.
Table 211 Output from the debugging lapb packet us-frame command
Field
Description
State The state of the data link layer protocol.
interface-type interface-number Interface name.
LAPB Module name.
direction
Frame direction:
• I—Incoming.
• O—Outgoing.
CMD/RSP Command frame/response frame.
MOD modulo Modulo.
NS Sending sequence number.
NR Receiving sequence number.
PF Polling/Finish bit.
LEN Frame length.
Examples
# Enable information frame debugging. Output similar to the following example is generated when you
ping Router B from Router A under the following conditions:
•
Router A and Router B are connected.
•
LAPB is enabled on Router A and Router B.
<Sysname> debugging lapb packet i-frame
*Jul 18 17:03:03:530 2005 Sysname LAPB/7/debug:
state 3 Serial2/0 LAPB O: CMD MOD 8 SINGLE ENCAP IFRAME NS 1 NR 0 P 0 LEN = 86
// The state value of the data link layer protocol is 3 (data transmission state). A
single-protocol-encapsulated information frame was sent out interface Serial 2/0.
*Jul 18 17:03:03:556 2005 Sysname LAPB/7/debug:
state 3 Serial2/0 LAPB I: CMD MOD 8 SINGLE ENCAP IFRAME NS 0 NR 2 P 0 LEN = 86
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