Difference between revisions of "NAD710 Lab 2 Answers"

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'''2. What command disable ARP on a network interface?'''
 
'''2. What command disable ARP on a network interface?'''
  
Answer: To disable ARP on a network interface named 'ethxxx', one would use a command of the form 'ifconfing ethxxx -arp'.
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Answer:  
  
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To disable ARP on a network interface named 'ethxxx', one would use a command of the form 'ifconfing ethxxx -arp'.
  
'''How do you enable ARP on a network interface if it has been disabled?'''
 
  
Answer: To re-enable ARP on a network interface named 'ethxxx', one would use a command of the form 'ifconfig ethxxx arp'.
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'''3. How do you enable ARP on a network interface if it has been disabled?'''
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 +
Answer:  
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To re-enable ARP on a network interface named 'ethxxx', one would use a command of the form 'ifconfig ethxxx arp'.

Revision as of 16:46, 11 September 2008

1. What is the effect of the first "ifconfig ethxx down" command on the system's ARP cache ?

Answer:

The arp table becomes empty after the first "ifconfig eth1 down"

[root@localhost ~]# arp -n
Address                  HWtype  HWaddress           Flags Mask    Iface
142.204.141.131          ether   00:0E:7F:3C:A8:F3   C             eth1
142.204.141.129          ether   00:0E:0C:4B:31:5C   C             eth1
[root@localhost ~]# ifconfig eth1 down
[root@localhost ~]# arp -n
[root@localhost ~]# ifconfig eth1 up
[root@localhost ~]# arp -n

2. What command disable ARP on a network interface?

Answer:

To disable ARP on a network interface named 'ethxxx', one would use a command of the form 'ifconfing ethxxx -arp'.


3. How do you enable ARP on a network interface if it has been disabled?

Answer:

To re-enable ARP on a network interface named 'ethxxx', one would use a command of the form 'ifconfig ethxxx arp'.