lchas.blogg.se - Arp command to find mac address

Arp command to find mac address software#

The node-id argument is entered in the rack/slot/module notation. (Optional) Displays the ARP entry for a specific location. In references to a Management Ethernet interface located on a route processor card, the physical slot number is alphanumeric (RSP0) and the module is CPU0. (Optional) Either a physical interface instance or a virtual interface instance as follows: (Optional) The ARP entries that match the 48-bit MAC address are displayed. (Optional) The ARP entries you want to display. (Optional) VRF instance that identifies a VPN. (Optional) Specifies VPN routing and forwarding (VRF) instance.

Using the no form of the command removes the specified command from the configuration file and restores the system to its default condition with respect to the command.

All of the routes to the target IP address go through interfaces other than the one on which the request is received.

The networking device has one or more routes to the target IP address.

The target IP address is not on the same physical network (LAN) on which the request is received.

When proxy ARP is enabled, the networking device also responds to ARP requests that meet all of the following conditions:

The target IP address in the ARP request has a statically configured ARP alias.

The target IP address in the ARP request is the same as the interface IP address on which the request is received.

When proxy ARP is disabled, the networking device responds to ARP requests received on an interface only if one of the following conditions is met: Number range varies depending on interface type.įor more information about the syntax for the router, use the question mark (?) online help function.Ĭlears the ARP entries for a specified location. Example: interface MgmtEth0/ RSP0 /CPU0/0. In references to a Management Ethernet interface located on a route processor card, the physical slot number is alphanumeric ( RSP0 ) and the module is CPU0. Port: Physical port number of the interface. A physical layer interface module (PLIM) is always 0. Slot: Physical slot number of the modular services card or line card. Naming notation is rack/slot/module/port and a slash between values is required as part of the notation. For more information, use the question mark (?) online help function.Įither a physical interface instance or a virtual interface instance as follows: Task IDĭeletes traffic statistics on the specified interface. To remove all nonstatic entries from the ARP cache, enter the clear arp-cache in EXEC mode.

Arp command to find mac address software#

When proxy ARP is enabled, the software responds to ARP requests with its own local interface hardware address. The software does not respond to any ARP requests received for the specified IP address unless proxy ARP is enabled on the interface on which the request is received. If the alias keyword is specified when creating the entry, the interface to which the entry is attached will act as if it is the owner of the specified addresses, that is, it will respond to ARP request packets for this network layer address with the data link layer address in the entry. Static entries are permanent entries that map a network layer address (IPv4 address) to a data-link layer address (MAC address). The software uses ARP cache entries to translate 32-bit IP addresses into 48-bit hardware addresses.īecause most hosts support dynamic resolution, you generally need not specify static ARP cache entries. If you suspect user group assignment is preventing you from using a command, contact your AAA administrator for assistance. To use this command, you must be in a user group associated with a task group that includes the proper task IDs.