Appendix F -- IPv6 Reference Tables

Appendix F

This appendix contains a series of summary reference tables for IPv6.

Table F-1. Defined Values for the Scope Field for IPv6 Multicast Addresses

Scope Field Value Scope

0

Reserved

1

Node-local scope

2

Link-local scope

5

Site-local scope

8

Organization-local scope

E

Global scope

F

Reserved

Table F-2. Typical Values of the Next Header Field in the IPv6 Header

Value (Decimal) Header

0

Hop-by-Hop Options header

6

TCP

17

UDP

41

Encapsulated IPv6 header

43

Routing header

44

Fragment header

50

Encapsulating Security Payload header

51

Authentication header

58

ICMPv6

59

No next header

60

Destination Options header

Table F-3. Option Types for Hop-by-Hop Options and Destination Options Headers

Option Type Option and Where It Is Used Alignment Requirement

0

Pad1 option:
Hop-by-Hop and Destination
Options headers

None

1

PadN option:
Hop-by-Hop and Destination
Options headers

None

194 (0xC2)

Jumbo Payload option:
Hop-by-Hop Options header

4n + 2

5

Router Alert option:
Hop-by-Hop Options header

2n + 0

198 (0xC6)

Binding Update option:
Destination Options header

4n + 2

7

Binding Acknowledgement option:
Destination Options header

4n + 3

8

Binding Request option:
Destination Options header

None

201 (0xC9)

Home Address option:
Destination Options header

8n + 6

Table F-4. IPv6 MTUs for Common LAN and WAN Technologies

LAN or WAN Technology IPv6 MTU

Ethernet (Ethernet II encapsulation)

1,500

Ethernet (IEEE 802.3 SubNetwork Access Protocol [SNAP] encapsulation)

1,492

Token Ring

Varies

FDDI

4,352

Attached Resource Computer Network (ARCNet)

9,072

PPP

1,500

X.25

1,280

Frame Relay

1,592

Asynchronous Transfer Mode (ATM)
(Null or SNAP encapsulation)

9,180

Table F-5. ICMPv6 Messages

ICMPv6 Type Message Chapter for Details

1

Destination Unreachable

5

2

Packet Too Big

5

3

Time Exceeded

5

4

Parameter Problem

5

128

Echo Request

5

129

Echo Reply

5

130

Multicast Listener Query

7

131

Multicast Listener Report

7

132

Multicast Listener Done

7

133

Router Solicitation

6

134

Router Advertisement

6

135

Neighbor Solicitation

6

136

Neighbor Advertisement

6

137

Redirect

6

150

Home Agent Address Discovery Request

12

151

Home Agent Address Discovery Reply

12

Table F-6. ICMPv6 Destination Unreachable Messages

Code Field Value Description

0 - No Route to Destination

No route matching the destination was found in the routing table.

1 - Communication with Destination Administratively Prohibited

The communication with the destination is prohibited by administrative policy. This is typically sent when the packet is discarded by a firewall.

2 - Beyond Scope of Source Address

The destination is beyond the scope of the source address. A router sends this when the packet is forwarded by using an interface that is not within the scoped zone of the source address. This message is defined in the Internet draft titled "IPv6 Scoped Address Architecture."

3 - Address Unreachable

The destination address is unreachable. This is typically sent because of an inability to resolve the destination's link-layer address.

4 - Port Unreachable

The destination port was unreachable. This is typically sent when an IPv6 packet containing a UDP message arrived at the destination but there were no applications listening on the destination UDP port.

Table F-7. ICMPv6 Parameter Problem Messages

Code Field Value Description

0 - Erroneous Header Field Encountered

An error in a field within the IPv6 header or an extension header was encountered.

1 - Unrecognized Next Header Type Encountered

An unrecognized Next Header field value was encountered. This is equivalent to the ICMPv4 Destination Unreachable-Protocol Unreachable message.

2 - Unrecognized IPv6 Option Encountered

An unrecognized IPv6 option was encountered.

Table F-8. IPv6 Neighbor Discovery Option Types

Type Option Name Source Document

1

Source Link-Layer Address

RFC 2461

2

Target Link-Layer Address

RFC 2461

3

Prefix Information

RFC 2461

4

Redirected Header

RFC 2461

5

MTU

RFC 2461

7

Advertisement Interval

"Mobility Support in IPv6" draft

8

Home Agent Information

"Mobility Support in IPv6" draft

9

Route Information

"Default Router Preferences and More-Specific Routes" draft

Table F-9. Neighbor Discovery Messages and the Options That Might Be Included

ND Message ND Options That Might Be Included

Router Solicitation

Source Link-Layer Address option: Used to inform the router of the link-layer address of the host for the unicast Router Advertisement response.

Router Advertisement

Source Link-Layer Address option: Used to inform the receiving host(s) of the link-layer address of the router.
Prefix Information option(s): Used to inform the receiving host(s) of on-link prefixes and whether to autoconfigure stateless addresses.
MTU option: Used to inform the receiving host(s) of the IPv6 MTU of the link.
Advertisement Interval option: Used to inform the receiving host how often the router (the home agent) is sending unsolicited multicast router advertisements.
Home Agent Information option: Used to advertise the home agent's preference and lifetime.
Route Information option(s): Used to inform the receiving host(s) of specific routes to add to a local routing table.

Neighbor Solicitation

Source Link-Layer Address option: Used to inform the receiving node of the link-layer address of the sender.

Neighbor Advertisement

Target Link-Layer Address option: Used to inform the receiving node(s) of the link-layer address corresponding to the Target Address field.

Redirect

Redirected Header option: Used to include all or a portion of the packet that was redirected.
Target Link-Layer Address option: Used to inform the receiving node(s) of the link-layer address corresponding to the Target Address field.



Understanding IPv6
Understanding Ipv6
ISBN: 0735612455
EAN: 2147483647
Year: 2005
Pages: 124
Authors: Joseph Davies

Similar book on Amazon

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net