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The Link-Local Multicast Name Resolution (LLMNR) is a protocol based on the Domain Name System (DNS) packet format that allows both IPv4 and IPv6 hosts to perform name resolution for hosts on the same local link. It is included in Windows Vista, Windows Server 2008, Windows 7, Windows 8, Windows 10. [1]
Each of these types of multicast addresses have their own format and follow specific rules. Similar to a unicast address, the prefix of an IPv6 multicast address specifies its scope, however, the set of possible scopes for a multicast address is different. The 4-bit scope field (bits 12 to 15) is used to indicate where the address is valid and ...
A wildcard mask is a mask of bits that indicates which parts of an IP address are available for examination. In the Cisco IOS, [1] they are used in several places, for example: To indicate the size of a network or subnet for some routing protocols, such as OSPF. To indicate what IP addresses should be permitted or denied in access control lists ...
For routing IP multicast traffic, OSPF supports the Multicast Open Shortest Path First (MOSPF) protocol. [4] Cisco does not include MOSPF in their OSPF implementations. [5] Protocol Independent Multicast (PIM) in conjunction with OSPF or other IGPs, is widely deployed. OSPF version 3 introduces modifications to the IPv4 implementation of the ...
Group Address: 32 bits This is the multicast address being queried when sending a Group-Specific or Group-and-Source-Specific Query. The field is zeroed when sending a General Query. The message is sent to the following IP multicast addresses: [8]: §9
OSPF Open Shortest Path First: RFC 2328: 0x5A 90 Sprite-RPC Sprite RPC Protocol 0x5B 91 LARP Locus Address Resolution Protocol: 0x5C 92 MTP Multicast Transport Protocol: 0x5D 93 AX.25 AX.25: 0x5E 94 OS KA9Q NOS compatible IP over IP tunneling: 0x5F 95 MICP Mobile Internetworking Control Protocol: 0x60 96 SCC-SP Semaphore Communications Sec. Pro ...
A Type 8 LSA is used to give information about link-local addresses and a list of IPv6 addresses on the link. In OSPFv2, the Type 8 was originally intended to be used as a so-called External-Attributes-LSA for transit autonomous systems where OSPFv2 could replace the internal Border Gateway Protocol (iBGP). In these networks, the BGP ...
The Internet Engineering Task Force (IETF) has reserved the IPv4 address block 169.254.0.0 / 16 (169.254.0.0 – 169.254.255.255) for link-local addressing. [1] The entire range may be used for this purpose, except for the first 256 and last 256 addresses (169.254.0.0 / 24 and 169.254.255.0 / 24), which are reserved for future use and must not be selected by a host using this dynamic ...