debugging ipv6 packet

Function

The debugging ipv6 packet command debugs IPv6 packets and displays debugging information.

The undo debugging ipv6 packet command disables debugging of IPv6 packets.

By default, the debugging of all ipv6 packet is disabled.

Format

debugging ipv6 packet [ error ] [ min-length min-length-value ] [ max-length max-length-value ] [ source src-address6 ] [ destination dest-address6 ] [ interface { interface-name | interface-type interface-num } ] [ verbose [ verbose-length ] ] [ number print-value ]

undo debugging ipv6 packet [ error ]

Parameters

Parameter	Description	Value
error	Displays the specified IPv6 error packets.	-
min-length min-length-value	Specifies the minimum packet length.	The value is an integer ranging from 1 to 65535.
max-length max-length-value	Specifies the maximum packet length.	The value is an integer ranging from 1 to 65535.
source src-address6	Specifies the source IPv6 address.	The address is a 32-bit hexadecimal number, in the format of X:X:X:X:X:X:X:X.
destination dest-address6	Specifies the destination IPv6 address.	The address is a 32-bit hexadecimal number, in the format of X:X:X:X:X:X:X:X.
interface interface-name	Specifies the interface name.	-
interface interface-type	Specifies the interface type.	-
interface interface-num	Specifies the interface number.	-
verbose verbose-length	Specifies the length of the detailed packet information.	The value is an integer ranging from 1 to 64, in bytes. The default value is 64.
number print-value	Specifies the number of the packet information.	The value is an integer ranging from 1 to 4294967295, in bytes. By default, the value is 10.

Views

User view

Default Level

3: Management level

Task Name and Operations

Task Name	Operations
ip-stack	debug

Usage Guidelines

Usage Scenario

The debugging ipv6 packet command displays IPv6 packets for locating system exceptions.

Example

# Display detailed information about the IPv6 packet with packet length of 50.

<HUAWEI> debugging ipv6 packet verbose 50
2011-04-18 17:41:11 HUAWEI %%01PP6/7/packet(d):CID=2154964763;Receiving packet. (IfIndex = 5, Version = 6, 
TrafficClass = 0, FlowLabel = 0, PayloadLength = 64, HopLimit = 64, Src = 2001:db8:1::1, Dst = 2001:db8:1::1, NextHeader = ICMPv6, 
Type = 128, Code = 0, Chechsum = 0x793F, EchoRequest, Identifier = 1312, SequenceNumber = 256)
Memory (IPv6 Pkt):
        6000 0000 0040 3a40 2001 db80 0001 0000 
        0000 0000 0000 0001 2001 db80 0001 0000 
        0000 0000 0000 0001 8000 793f 0520 0100 
        0000
2011-04-18 17:41:11 HUAWEI %%01PP6/7/packet(d):CID=2154964763;Sending packet. (IfIndex = 5, Version = 6, 
TrafficClass = 0, FlowLabel = 0, PayloadLength = 64, HopLimit = 64, Src = 2001:db8:1::1, Dst = 2001:db8:1::1, NextHeader = ICMPv6, 
Type = 129, Code = 0, Chechsum = 0x783F, EchoReply, Identifier = 1312, SequenceNumber = 256)
Memory (IPv6 Pkt):
        6000 0000 0040 3a40 2001 db80 0001 0000 
        0000 0000 0000 0001 2001 db80 0001 0000 
        0000 0000 0000 0001 8100 783f 0520 0100 
        0000

# Enable the debugging of IPv6 packets, and the following debugging information is displayed.

<HUAWEI> debugging ipv6 packet
2011-04-18 17:40:47 HUAWEI %%01PP6/7/packet(d):CID=2154964763;Receiving packet. (IfIndex = 5, Version = 6, 
TrafficClass = 0, FlowLabel = 0, PayloadLength = 64, HopLimit = 64, Src = 2001:db8:1::1, Dst = 2001:db8:1::1, NextHeader = ICMPv6, 
Type = 128, Code = 0, Chechsum = 0x795F, EchoRequest, Identifier = 1280, SequenceNumber = 256)
2011-04-18 17:40:47 HUAWEI %%01PP6/7/packet(d):CID=2154964763;Sending packet. (IfIndex = 5, Version = 6, 
TrafficClass = 0, FlowLabel = 0, PayloadLength = 64, HopLimit = 64, Src = 2001:db8:1::1, Dst = 2001:db8:1::1, NextHeader = ICMPv6, 
Type = 129, Code = 0, Chechsum = 0x785F, EchoReply, Identifier = 1280, SequenceNumber = 256)

**Table 1** Description of the **debugging ipv6 packet** command output
Item	Description
Version	Version number.
TrafficClass	Traffic class.
FlowLabel	Flow label.
PayloadLength	Payload length.
HopLimit	Hop limit.
Src	Source address.
Dst	Destination address.
NextHeader	Next packet header.
Type	Types of ICMP packets.
Code	Code of ICMP packets.
Identifier	The Identifier of ICMP packet.
SequenceNumber	The sequence number of ICMP packet.
Memory (IPv6 Pkt)	IPv6 packet displayed in hexadecimal notation.
CID	CID of the component that outputs the current information.
Receiving packet	Receiving packet.
Sending packet	Sending packet.
IfIndex	Index of the interface over which packets are transmitted.
EchoRequest	EchoRequest packet.
EchoReply	EchoReply packet.