Resources Contact Us Home
Method and tool for IP multicast network address translation (MNAT)

Image Number 4 for United States Patent #8054766.

The present invention permits translation of SM addresses (*, G.sub.1) and (*, G.sub.2) to configurable SSM addresses (S.sub.0, G.sub.0). IGMPv2 group membership queries from the receiver subnet are translated to IGMPv3 membership queries for processing in a SSM network. In the preferred embodiment, packets travel via a connection to the multicast router (mrouter). The mrouter queries an IGMPv2 receiver. The IGMPv2 receiver generates a membership report and sends it back to the mrouter. The mrouter translates the membership report into a (S.sub.0, G.sub.0) as specified in a multicast address translation table and stores the translation in the Multicast Forward Information Base (MFIB) located in the mrouter. Multicast payload addressed (S.sub.0, G.sub.0) flowing towards the IGMPv2 receiver can be translated to (S.sub.0, G.sub.0). When media data is addressed to (S.sub.0, G.sub.0), the mrouter consults the MFIB for forwarding and can also translate the destination address to (S.sub.1, G.sub.1).

  Recently Added Patents
Battery grid
Opportunistic modem
Small molecule inhibitors of kynurenine-3-monooxygenase
Radio communication system, transmission apparatus, reception apparatus, and radio communication method in radio communication
Lighting elements
Gyroscope utilizing torsional springs and optical sensing
Antenna array system
  Randomly Featured Patents
Navigation aware news service
Method and apparatus for optical add/drop multiplexing in optical networks
Substantive topical composition
Apparatus for developing electrostatically charged sheet-like carriers of latent images
Communications device and communications program
Neuropilin antagonists
Tracer control equipment
Displaying feed data
Image forming method
Bonding apparatus and bonding method