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- Table of Contents
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- 07-Layer 3—IP Services Configuration Guide
- 00-Preface
- 01-ARP configuration
- 02-IP addressing configuration
- 03-DHCP configuration
- 04-DNS configuration
- 05-NAT configuration
- 06-NAT66 configuration
- 07-IP forwarding basics configuration
- 08-Fast forwarding configuration
- 09-Multi-CPU packet distribution configuration
- 10-Adjacency table configuration
- 11-IRDP configuration
- 12-IP performance optimization configuration
- 13-UDP helper configuration
- 14-IPv6 basics configuration
- 15-DHCPv6 configuration
- 16-IPv6 fast forwarding configuration
- 17-AFT configuration
- 18-Tunneling configuration
- 19-GRE configuration
- 20-ADVPN configuration
- 21-WAAS configuration
- 22-Lighttpd service configuration
- 23-Web caching configuration
- 24-STUN configuration
- Related Documents
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| Title | Size | Download |
|---|---|---|
| 10-Adjacency table configuration | 48.07 KB |
Displaying the adjacency table
About the adjacency table
The adjacency table stores information about directly connected neighbors for IP forwarding. The neighbor information in this chapter refers to non-Ethernet neighbor information.
This table is not user configurable. The neighbor information is generated, updated, and deleted by link layer protocols through negotiation (such as PPP dynamic negotiation) or through manual configuration (such as ATM static configuration). An adjacency entry includes the following information:
· Neighbor network layer address (next hop).
· Output interface.
· Link layer protocol type.
· Link layer address. This field displays PVC for ATM, and it is not available for PPP.
When forwarding an IP packet, the device performs the following tasks:
· Searches the FIB to find the output interface and next hop.
· Uses the output interface and next hop address to search the adjacency table for link layer forwarding information.
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NOTE: · Ethernet and non-Ethernet neighbor information is stored and managed together. · Support for ATM interfaces depends on the device model. For more information, see ATM interface commands in Interface Command Reference. |
Display and maintenance commands for adjacency table
Execute display commands in any view.
Support for the display ipv6 adjacent-table command depends on the device model. For more information, see the command reference.
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Task |
Command |
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In standalone mode: display adjacent-table { all | physical-interface interface-type interface-number | routing-interface interface-type interface-number } [ count | verbose ] In IRF mode: display adjacent-table { all | physical-interface interface-type interface-number | routing-interface interface-type interface-number | slot slot-number } [ count | verbose ] |
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Display IPv6 adjacency table information. |
In standalone mode: display ipv6 adjacent-table { all | physical-interface interface-type interface-number | routing-interface interface-type interface-number } [ count | verbose ] In IRF mode: display ipv6 adjacent-table { all | physical-interface interface-type interface-number | routing-interface interface-type interface-number | slot slot-number } [ count | verbose ] |
