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The VRF-Aware ARP Debug feature provides debugging capability for Address Resolution Protocol (ARP) in a VPN routing and forwarding (VRF) environment. This feature is an enhancement to the ARP Rewrite feature.
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 at the end of this module.
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You can enable debugging Address Resolution Protocol (ARP) on a particular VPN routing and forwarding (VRF) instance, a VRF on an interface, or both. Use the debug arp vrf vrf-name command to enable debugging ARP for a VRF. When you enable the debug arp vrf vrf-name command on an interface, the command displays only information about the VRF configured on the interface.
Note |
The debug interface interface command must be enabled before the debug arp vrf vrf-name command is used on an interface. |
Perform this task to enable debug trace for Address Resolution Protocol (ARP) transactions to monitor the ARP subsystem.
Debug trace can be enabled for all IP ARP packet traffic, or it can be enabled for an individual type of ARP event, such as the following:
The amount of ARP debug information displayed is filtered according to the interface and access list specified by the debug list command.
The following example shows that debugging information related to vpn1 on Ethernet interface 0/0 will be logged:
Device> enable Device# configure terminal Device(config)# interface ethernet0/0 Device(config-if)# vrf forwarding vpn1 Device(config-if)# end Device# debug arp vrf vpn1
Related Topic | Document Title |
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Cisco IOS commands |
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IP addressing commands |
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IP addressing tasks |
Configuring IPv4 Addresses |
ARP configuration tasks |
Configuring Address Resolution Protocol Options |
ARP trace information |
Monitoring and Maintaining ARP Information |
Standard/RFC | Title |
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RFC 1812 |
Requirements for IP Version 4 Routers |
Description | Link |
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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.
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Table 1 | Feature Information for VRF-Aware ARP Debug |
Feature Name | Releases | Feature Information |
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VRF-Aware ARP Debug |
15.1(1)SY |
The VRF-Aware ARP Debug feature provides debugging capability for ARP in an VRF environment. This feature is an enhancement to the ARP Rewrite feature. The following command was introduced or modified: debug arp. |
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