display arp vpn-instance

Function

The display arp vpn-instance command displays the Address Resolution Protocol (ARP) mapping table of the specified VPN instance.

Format

display arp vpn-instance vpn-instance-name [ dynamic | static ]

Parameters

Parameter	Description	Value
vpn-instance-name	Specifies the name of the MPLS VPN instance.	-
dynamic	Displays dynamic ARP entries.	-
static	Displays static ARP entries.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Use the display arp vpn-instance command to view the contents of ARP entries when you monitor ARP entries or locate the faults in ARP.

The output of the display arp vpn-instance command differs on devices. For details, see related command reference.

Example

# Display the ARP entries of the VPN instance named abc.

<sysname> display arp vpn-instance abc
IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE        INTERFACE                 
                                          VLAN/CEVLAN PVC                       
------------------------------------------------------------------------------  
10.1.1.1        0819-****-e0fd            I -         GigabitEthernet 0/0/10                  
10.1.1.2        0819-****-e0fe            I -         GigabitEthernet 0/0/11                  
------------------------------------------------------------------------------  
Total:2         Dynamic:0       Static:0     Interface:2    Remote:0

**Table 1** Description of the **display arp vpn-instance** command output
Item	Description
IP ADDRESS	IP addresses in ARP entries.
MAC ADDRESS	MAC addresses in ARP entries. If the field is Incomplete, the entry is a fake ARP entry. If a large number of ARP Miss messages are sent to the upper-layer software, the system resources will be exhausted in processing the ARP Miss messages. To resolve this problem, the system automatically generates ARP fake entries instead of ARP entries.
EXPIRE(M)	Lifetime of ARP entries, in minutes NOTE: When the aging time is 0, the router sends an ARP probe packet to update ARP entries. The deletion time of an ARP entry is determined by the aging detection times and the number of ARP entries to be deleted. The aging detection times can be set using the arp detect-times command.
TYPE	Entry type and number of the slot that obtains the entry. The entry type contains 3 bits. The first bit can be as follows: I: Interface, indicating the MAC address of the interface D: Dynamic, indicating the dynamic entry obtained through the ARP packet S: Static, indicating the static entry obtained through static configuration R: Remote, indicating the ARP entry obtained through remote backup The second bit can only be F, indicating that the entry is reported to the routing module, the route to this IP address is calculated, and the entries in the FIB are correspondingly updated. NOTE: If the entry is not reported to the routing module, this field displays "-". For the ARP entry with the type as "I", this flag bit does not exist. The third bit indicates the number of the slot that obtains this entry. NOTE: For the ARP entry with the type as "I" or "S", this field displays "-".
VPN-INSTANCE	Name of the VPN instance to which the ARP entry belongs.
INTERFACE	Type and number of the interface that has learnt ARP entries. If the field is Multi-port:n, the interface learns an ARP entry in which the MAC address is configured for n interfaces.
VLAN/CEVLAN	VLAN ID to which the ARP entry belongs.
PVC	Interface where the PVC exists and the corresponding VPI/VCI.
Total	Total number of ARP entries.
Dynamic	Number of dynamic ARP entries.
Static	Number of static ARP entries.
Interface	Number of ARP entries on the interface.
Remote	Number of remote backup ARP entries.