Nortel 15000 用户指南

下载
页码 148
Troubleshooting with Packet Capture
302768-C Rev 00
8-19
 
 Example 6
To capture rx and tx PPP packets whose PPP control field matches 0x03, which 
means it is a datagram, and whose IP protocol matches ICMP, you enter the 
following commands. (Note that this example assumes that you have already 
specified the type field as shown in Example 5). 
rx-filter2-type capture
rx-filter2-offset 1
rx-filter2-reference mac
rx-filter2-size 1
rx-filter2-match 0x03
tx-filter2-type capture
tx-filter2-offset 1
tx-filter2-reference mac
tx-filter2-size 1
tx-filter2-match 0x03
rx-filter2-group and
tx-filter2-group and
Displaying the Current Packet Capture Configuration
You can display the current Packet Capture configuration in one of two ways. You 
can enter the 
info
 command at the PCAP prompt, or enter the 
show pcap config 
command at the BCC prompt. The subsections that follow indicate how to use 
each of these options. 
Using the info Command
When you use the 
info
 command to display current packet capture configuration, 
the BCC displays each attribute and its value. See the 
 for a description of each attribute and its values.
Example 
pcap/2/2/1# 
info
state enabled
capture-state stop
capture-buf-size 100
capture-packet-size 96
capture-direction both
rx-trigger notused
tx-trigger notused