Specifications

IP Switching Commands
show adjacency
ISW-109
Cisco IOS IP Switching Command Reference
May 2008
Usage Guidelines The show adjacency command is used to verify that an adjacency exists for a connected device, that the
adjacency is valid, and that the MAC header rewrite string is correct.
For line cards, you must specify the line card if_number (interface number). Use the show cef interface
command to obtain line card if_numbers.
You can use any combination of the ip-address, interface-type, and other keywords and arguments (in
any order) as a filter to display a specific subset of adjacencies.
On Cisco 7600 series routers, hardware Layer 3-switching adjacency statistics are updated every
60
seconds.
Note On the Cisco 10000 series routers, Pv6 is supported on Cisco IOS Release 12.2(28)SB or later releases.
The following information may be displayed by the show adjacency commands:
• Protocol
• Interface
• Type of routing protocol that is configured on the interface
• Type of routed protocol traffic using this adjacency
• Next hop address
• Method of adjacency that was learned
• Adjacency source (for example, Address Resolution Protocol (ARP) or ATM Map)
• Encapsulation prepended to packet switched through this adjacency
• Chain of output chain elements applied to packets after an adjacency
• Packet and byte counts
• High availability (HA) epoch and summary event epoch
12.1(1)E Support was added for the Cisco 7600 series routers.
12.1(3a)E3 The number of valid values for port-channel number changed.
12.1(5c)EX This command was modified to include Layer 3 information.
12.1(11b)E The atm, ge-wan, and pos keywords were added.
12.2(8)T The detail keyword output was modified to show the epoch value for each entry
of the adjacency table.
The summary keyword output was modified to show the table epoch for the
adjacency table.
12.2(14)SX Support for this command was added for the Supervisor Engine 720.
12.2(17d)SXB Support for this command on the Supervisor Engine 2 was extended to Cisco IOS
Release 12.2(17d)SXB.
12.2(25)S This command was integrated into Cisco IOS Release 12.2(25)S and new
keywords were added.
12.2(28)SB Support for IPv6 was added for the Cisco 10000 series routers.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH This command was integrated into Cisco IOS Release 12.2(33)SXH.
Release Modification