1 / 7

Host-based IPv6 Multicast Addresses Allocation draft-park-host-based-mcast-01.txt

Host-based IPv6 Multicast Addresses Allocation draft-park-host-based-mcast-01.txt. Jung-Soo Park, Myung-Ki Shin, Yong-Jin Kim ETRI 52nd IETF – Salt Lake City. What is this about. An extension to the multicast addressing architecture of IPv6

val
Download Presentation

Host-based IPv6 Multicast Addresses Allocation draft-park-host-based-mcast-01.txt

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Host-based IPv6 Multicast Addresses Allocationdraft-park-host-based-mcast-01.txt Jung-Soo Park, Myung-Ki Shin, Yong-Jin Kim ETRI 52nd IETF – Salt Lake City

  2. What is this about • An extension to the multicast addressing architecture of IPv6 • Each host (interface) uses Interface ID to allocate it’s own multicast addresses without any server • Especially useful in Zeroconf environment

  3. 4-bit 8-bit 4-bit 112-bit FF flgs scop group ID Background • Multicast addressing architecture of IPv6 • Does not contain any built-in support for dynamic address allocation

  4. 8 bits flags 4 bits 8 bits 8 bits 64 bits 32 bits 11111111 00PT reserved plen group ID scope network prefix Unicast prefix-based M. A.(by Brian Haberman & Dave Thaler) • Multicast address format • P flag is used to indicate a multicast address that is assigned based on the network prefix • plen indicates the actual number of bits in the network prefix field that identify the subnet

  5. 16-bit 32-bit 4-bit 8-bit 4-bit 64-bit 11111111 flgs scop reserved Interface ID group ID Host-based multicast address (I) • Link-local multicast address format • flgs field should use the same flags defined in section 3 of unicast prefix-based method • interface ID field is used to distinguish each host and is derived from unicast address

  6. 16-bit 32-bit 4-bit 8-bit 4-bit 64-bit 11111111 flgs scop SLA Interface ID group ID Host-based multicast address (II) • Site-local multicast address format • SLA value is obtained from the network prefix contained in the RA message to distinguish a site

  7. Discussion & Proposal • Distinction between host-based and unicast prefix-based M. A. is required • Because the flgs field use the same flags defined in section 3 of unicast prefix-based draft • The value of scope field can be used • For scope <= 5, host-based MA • For scope > 5, unicast prefix-based MA • Modifications in unicast prefix-based draft ? • IPv6 WG draft

More Related