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The IP Unnumbered Ethernet Polling Support feature provides IP unnumbered support for Ethernet physical interfaces. This support already exists for serial interfaces.
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
IP unnumbered support for serial interfaces is extended to Ethernet physical interfaces. Unnumbered Ethernet physical interfaces are used in the same manner as unnumbered serial interfaces. On a device, if a loopback interface is configured and an IP address is assigned to it, using the polling option more than one Ethernet physical interface can be unnumbered to the loopback.
The polling option enables the dynamic discovery of hosts (connected though the unnumbered interfaces) based on the Address Resolution Protocol (ARP) protocol.
1.
enable
2.
configure
terminal
3.
interface
type
number
4.
ip
address
ip-address
mask
5.
exit
6.
interface
type
number
7.
ip
unnumbered
type
number
poll
8.
end
1.
enable
2.
configure
terminal
3.
ip
arp
poll
queue
queue-size
4.
ip
arp
poll
rate
packet-rate
5.
end
Perform this task to verify IP unnumbered Ethernet polling support.
Note | The show commands are not in any specific order. |
1.
enable
2.
show
ip
arp
poll
3.
show
ip
interface
type
number
unnumbered
4.
show
ip
interface
type
number
unnumbered
detail
Device> enable Device# configure terminal Device(config)# interface loopback 0 Device(config-if)# ip address 209.165.200.229 255.255.240.224 Device(config-if)# exit Device(config)# interface ethernet 0/0 Device(config-if)# ip unnumbered loopback 0 poll Device(config-if)# end
Device> enable Device# configure terminal Device(config)# ip arp poll queue 1000 Device(config)# ip arp poll rate 1000 Device(config)# end
Related Topic |
Document Title |
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Cisco IOS commands |
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IPv4 Addressing commands |
|
Conceptual information about IPv4 addresses |
“Configuring IPv4 Addresses” module in the IP Addressing: IPv4 Addressing Configuration Guide |
Description |
Link |
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The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.Feature Name |
Releases |
Feature Information |
---|---|---|
IP Unnumbered Ethernet Polling Support |
Cisco IOS XE Release 3.8S |
The IP Unnumbered Ethernet Polling Support feature provides IP unnumbered support for Ethernet physical interfaces. The following commands were introduced or modified: clear ip arp poll statistics, clear ip interface, ip arp poll, ip unnumbered poll, show ip arp poll, and show ip interface unnumbered. |