3Com 3C780 User Guide - Page 122

xxx.xxx.xxx.xxx, hh.hh.hh.hh.hh.hh

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5-20 Using the Hub By including a metric option, you can indicate the number of hops (number of gateways separating the source and destination) to the designated destination network. For example, to indicate five hops in the above command line, type: route add 128.87.45.12 128.87.45.33 5 s To delete a route from the routing table, use the IP address in Internet dot notation. For example, type: route del 128.87.45.12 128.87.45.33 s To determine the IP addresses of the destination and gateway, enter the route dump command. For example, type: route dump [Enter] This display appears: DESTINATION GATEWAY 128.87.0.0 128.87.45.15 arp Command The arp command allows you to display and change information in the Address Resolution Protocol (ARP) table of the hub. The Address Resolution Protocol maps known IP addresses (32 bits long) to MAC addresses (48 bits long). s To display the contents of the ARP table, type: arp dump s To delete the IP address of the host, type: arp del xxx.xxx.xxx.xxx where xxx.xxx.xxx.xxx is the IP address of the host in Internet dot notation. s To add an entry to the ARP table, type: arp set xxx.xxx.xxx.xxx hh.hh.hh.hh.hh.hh where xxx.xxx.xxx.xxx is the IP address of the host and hh.hh.hh.hh.hh.hh is the host 48-bit MAC address in noncanonical format.

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5-20
Using the Hub
By including a
metric
option, you can indicate the number of hops (number
of gateways separating the source and destination) to the designated
destination network.
For example, to indicate five hops in the above
command line, type:
route add 128.87.45.12 128.87.45.33
5
■
To delete a route from the routing table, use the IP address in Internet dot
notation.
For example, type:
route del 128.87.45.12 128.87.45.33
■
To determine the IP addresses of the destination and gateway, enter the
route dump
command.
For example, type:
route dump [Enter]
This display appears:
DESTINATION GATEWAY
128.87.0.0
128.87.45.15
arp
Command
The
arp
command allows you to display and change information in the Address
Resolution Protocol (ARP) table of the hub.
The Address Resolution Protocol
maps known IP addresses (32 bits long) to MAC addresses (48 bits long).
■
To display the contents of the ARP table, type:
arp dump
■
To delete the IP address of the host, type:
arp del xxx.xxx.xxx.xxx
where
xxx.xxx.xxx.xxx
is the IP address of the host in Internet dot notation.
■
To add an entry to the ARP table, type:
arp set xxx.xxx.xxx.xxx hh.hh.hh.hh.hh.hh
where
xxx.xxx.xxx.xxx
is the IP address of the host and
hh.hh.hh.hh.hh.hh
is the host 48-bit MAC address in noncanonical
format.