Chapter 41 Maintenance Tools

Router# packet-trace interface ge2 ip-proto icmp file extension-filter -> and src host 192.168.105.133 and dst host 192.168.105.40 -s 500 -n tcpdump: listening on eth1

07:26:51.731558 192.168.105.133 > 192.168.105.40: icmp: echo request (DF)

07:26:52.742666 192.168.105.133 > 192.168.105.40: icmp: echo request (DF)

07:26:53.752774 192.168.105.133 > 192.168.105.40: icmp: echo request (DF)

07:26:54.762887 192.168.105.133 > 192.168.105.40: icmp: echo request (DF)

8 packets received by filter

0 packets dropped by kernel

Router# traceroute www.zyxel.com

 

 

30

hops max, 38 byte packets

traceroute to www.zyxel.com (203.160.232.7),

1

172.16.13.254

3.049 ms 1.947

ms

1.979

ms

 

2

172.16.6.253

2.983 ms

2.961 ms

2.980 ms

 

3

172.16.6.1 5.991 ms

5.968 ms

6.984 ms

 

 

4

* * *

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The following example creates an ARP table entry for IP address 192.168.1.10 and MAC address 01:02:03:04:05:06. Then it shows the ARP table and finally removes the new entry.

Router# arp 192.168.1.10 01:02:03:04:05:06

 

 

Router# show arp-table

HWtype

HWaddress

Flags Mask

Iface

Address

192.168.1.10

ether

01:02:03:04:05:06

CM

ge1

172.23.19.254

ether

00:04:80:9B:78:00

C

ge2

Router# no arp 192.168.1.10

 

 

 

Router# show arp-table

HWtype

HWaddress

Flags Mask

Iface

Address

192.168.1.10

ether

(incomplete)

C

ge1

172.23.19.254

00:04:80:9B:78:00

ge2

The following examples show how to configure packet capture settings and perform a packet capture. First you have to check whether a packet capture is running. This example shows no other packet capture is running. Then you can also check the current packet capture settings.

Router(config)# show packet-capture status capture status: off

Router(config)#

Router(config)# show packet-capture config iface: wan1,lan2,wan2

ip-type: any

host-port: 0

host-ip: any

file-suffix: Example

snaplen: 1500

duration: 150

file-size: 10000

264

 

NXC CLI Reference Guide