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- Table of Contents
-
- 13-Layer 3—IP Services Configuration Guide
- 00-Preface
- 01-IP addressing configuration
- 02-IP forwarding basics configuration
- 03-Fast forwarding configuration
- 04-ARP configuration
- 05-IPv6 basics configuration
- 06-IPv6 fast forwarding configuration
- 07-DHCP configuration
- 08-DHCPv6 configuration
- 09-DNS configuration
- 10-IP performance optimization configuration
- 11-Multi-CPU packet distribution configuration
- 12-Adjacency table configuration
- Related Documents
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| Title | Size | Download |
|---|---|---|
| 12-Adjacency table configuration | 44.44 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. An adjacency entry includes the following information:
· Neighbor network layer address (next hop).
· Output interface.
· Link layer protocol type.
· Link layer address. This field 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. |
Display and maintenance commands for adjacency table
Execute display commands in any view.
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Task |
Command |
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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. |
display ipv6 adjacent-table { all | physical-interface interface-type interface-number | routing-interface interface-type interface-number | slot slot-number } [ count | verbose ] |
