Layer 3 information
The following table describes basic Layer 3 Information commands. The following sections provide more detailed information and commands. Layer 3 functionality is limited in this release.
Table 22 Layer 3 information commands
Command | Usage |
show ip arp | Displays Address Resolution Protocol (ARP) Information. |
| Command mode: All except User EXEC |
show layer3 information | Displays IP Information. IP information, includes: |
| • IP interface information: Interface number, IP address, subnet mask, |
| VLAN number, and operational status. |
| • Default gateway information: Metric for selecting which configured |
| gateway to use, gateway number, IP address, and health status |
| • IP forwarding information: Enable status, lnet and lmask |
| • Port status |
| Command mode: All except User EXEC |
show ip igmp groups | Displays IGMP Information. |
| Command mode: All except User EXEC |
show layer3 | Dumps all switch information available from Layer 3 memory (10K or more, |
| depending on your configuration). |
| If you want to capture dump data to a file, set your communication software on |
| your workstation to capture session data prior to issuing the dump commands. |
| Command mode: All except User EXEC |
ARP information
The Address Resolution Protocol (ARP) information includes IP address and MAC address of each entry, address status flags, VLAN, and port for the address, and port referencing information.
The following table describes the Address Resolution Protocol commands.
Table 23 ARP information
Command | Usage |
show ip arp find <IP address> | Displays a single ARP entry by IP address. |
| Command mode: All except User EXEC |
show ip arp interface <port number> | Displays the ARP entries on a single port. |
| Command mode: All except User EXEC |
show ip arp vlan | Displays the ARP entries on a single VLAN. |
| Command mode: All except User EXEC |
show ip arp | Displays all ARP entries, including: |
| • IP address and MAC address of each entry |
| • Address status flag |
| • The VLAN and port to which the address belongs |
| The ports which have referenced the address (empty if no port |
| has routed traffic to the IP address shown) |
| Command mode: All except User EXEC |
show ip arp reply | Displays the ARP address list: IP address, IP mask, MAC |
| address, and VLAN flags. |
| Command mode: All except User EXEC |
Information Commands 32
