display access statistics packet discard

Function

The display access statistics packet discard command displays statistics about dropped packets of access users.

This command is supported only on the NetEngine 8000 F1A.

Format

display access statistics packet discard { mac-spoofing | urpf } [ ipoe | pppoe ] [ ipv4 | ipv6 ] { interface { interface-type interface-name | interface-number } | slot slot-id }

Parameters

Parameter	Description	Value
mac-spoofing	Displays statistics about MAC-spoofing-dropped packets of access users.	-
urpf	Displays statistics about URPF-dropped packets of access users.	-
ipoe	Displays statistics about URPF-dropped packets of IPoX users.	-
pppoe	Displays statistics about URPF-dropped packets of PPPoX users.	-
ipv4	Displays statistics about URPF-dropped IPv4 packets.	-
ipv6	Displays statistics about URPF-dropped IPv6 packets.	-
interface	Specifies an interface.	-
interface-type	Specifies an interface type.	-
interface-name	Specifies an interface name.	-
interface-number	Specifies an interface number.	-
slot slot-id	Specifies a slot ID.	-

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
forwarding	read

Usage Guidelines

Usage Scenario

To help locate faults and trace user traffic, run the display access statistics packet discard mac-spoofing command to check statistics about user packets that are discarded because of the MAC-spoofing.

To help locate faults and trace user traffic, run the display access statistics packet discard urpf command to check statistics about user packets that are discarded because they fail the URPF check.

Prerequisites

The ipv6 urpf strict enable [ check subnet ] command has been run to enable IPv6 URPF for IPv6 PPPoE users so that URPF can be implemented on IPv6 PPPoE user traffic and statistics can be collected for URPF-dropped IPv6 PPPoE packets. URPF is by default enabled for other types of users.

Precautions

In VS mode, this command is supported only by the admin VS.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display statistics about URPF-dropped packets on the board in slot 1.

<HUAWEI> display access statistics packet discard urpf slot 1
Slot 1 discard statistics:
 --------------------------------------------------------------------------
             IPv4 packets(high, low)    IPv6 packets(high, low)
 --------------------------------------------------------------------------
 pppoe       (4294967295, 4294967295)   (4294967295, 4294967295)
 ipoe        (4294967295, 4294967295)   (4294967295, 4294967295)
 --------------------------------------------------------------------------

# Display statistics about MAC-spoofing-dropped packets on the board in slot 1.

<HUAWEI> display access statistics packet discard mac-spoofing slot 1
Slot 1 discard statistics:
--------------------------------------------------------------------------
             IPv4 packets(high, low)    IPv6 packets(high, low)
--------------------------------------------------------------------------
 pppoe       (4294967295, 4294967295)    (4294967295, 4294967295)
 ipoe        (4294967295, 4294967295)    (4294967295, 4294967295)
--------------------------------------------------------------------------

**Table 1** Description of the **display access statistics packet discard** command output
Item	Description
Slot 1 discard statistics	Statistics about dropped packets of access users in slot 1.
IPv4 packets(high, low)	IPv4 packet loss statistics. Packet loss = high x 2³² + low.
IPv6 packets(high, low)	IPv6 packet loss statistics. Packet loss = high x 2³² + low.