rfc9466v3.txt | rfc9466.txt | |||
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Internet Engineering Task Force (IETF) Y. Liu, Ed. | Internet Engineering Task Force (IETF) Y. Liu, Ed. | |||
Request for Comments: 9466 China Mobile | Request for Comments: 9466 China Mobile | |||
Category: Standards Track T. Eckert, Ed. | Category: Standards Track T. Eckert, Ed. | |||
ISSN: 2070-1721 M. McBride | ISSN: 2070-1721 M. McBride | |||
Futurewei | Futurewei | |||
Z. Zhang | Z. Zhang | |||
ZTE Corporation | ZTE Corporation | |||
September 2023 | October 2023 | |||
PIM Assert Message Packing | PIM Assert Message Packing | |||
Abstract | Abstract | |||
When PIM Sparse Mode (PIM-SM), including PIM Source-Specific | When PIM Sparse Mode (PIM-SM), including PIM Source-Specific | |||
Multicast (PIM-SSM), is used in shared LAN networks, there is often | Multicast (PIM-SSM), is used in shared LAN networks, there is often | |||
more than one upstream router. This can lead to duplicate IP | more than one upstream router. This can lead to duplicate IP | |||
multicast packets being forwarded by these PIM routers. PIM Assert | multicast packets being forwarded by these PIM routers. PIM Assert | |||
messages are used to elect a single forwarder for each IP multicast | messages are used to elect a single forwarder for each IP multicast | |||
skipping to change at line 473 ¶ | skipping to change at line 473 ¶ | |||
| OptionType = 40 | OptionLength = 0 | | | OptionType = 40 | OptionLength = 0 | | |||
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |||
Figure 1: PIM Packed Assert Capability Hello Option | Figure 1: PIM Packed Assert Capability Hello Option | |||
OptionType 40 (Packed Assert Capability): | OptionType 40 (Packed Assert Capability): | |||
Indicates support for the ability to receive and process all the | Indicates support for the ability to receive and process all the | |||
PackedAssert encodings defined in this document. | PackedAssert encodings defined in this document. | |||
OptionLength 0: | OptionLength 0: | |||
The Packet Assert Capaility has no OptionValue. | The Packet Assert Capability has no OptionValue. | |||
4.2. Assert Message Format | 4.2. Assert Message Format | |||
Figure 2 shows a PIM Assert message as specified in Section 4.9.6 of | Figure 2 shows a PIM Assert message as specified in Section 4.9.6 of | |||
[RFC7761]. The Encoded-Group and Encoded-Unicast address formats are | [RFC7761]. The Encoded-Group and Encoded-Unicast address formats are | |||
specified in Section 4.9.1 of [RFC7761] for IPv4 and IPv6. | specified in Section 4.9.1 of [RFC7761] for IPv4 and IPv6. | |||
0 1 2 3 | 0 1 2 3 | |||
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |||
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |||
End of changes. 2 change blocks. | ||||
2 lines changed or deleted | 2 lines changed or added | |||
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