Basic commands for a switch to determine the IP address of a device, using Ruijie as an example.

Apr 23, 2023225

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This post is translated from Chinese into English through AI.View Original

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This is a summary of the given text in "en" language: 1. To view the current configuration of the switch, use the "show run" or "dis cur" command. It shows the VLAN or link division corresponding to each port. 2. To view the ARP table and obtain IP address information for each port, use the "show arp" or "show ip arp" command. The "show arp | include xxx" command can be used to search for specific IP segments. 3. To view the MAC address table and see the corresponding network segment and MAC address for each port, use the "show mac-address-table" command. The "show mac-address-table | include xxx" command can be used to match specific VLAN domains or MAC addresses.

1. View the current configuration of the switch#

<Switch1>show run

The "dis cur" command is used to view the basic configuration currently running, which shows the division of ports corresponding to VLAN or links.

2. View the ARP table#

<Switch1>show arp

Viewing the ARP table can obtain the IP address information corresponding to the ports.
Note: The "show ip arp" command is equivalent to "show arp".
Extended command:

<Switch1>show arp | include xxx

"xxx" represents an IP range, which can be filled with a complete IP or an IP subnet. If there is too much configuration content, you can query the ARP table for specific content.

3. View MAC addresses#

<Switch1>show mac-address-table

The MAC address table can be used to view the corresponding subnet and MAC address of the port. By combining it with the ARP table, MAC addresses, VLAN domains, and IP addresses can be correlated.
Extended command:

<Switch1>show mac--address-table | include xxx

Similar to the ARP table, this command can also be matched using "include", which can be a VLAN domain or a MAC address, etc.