3.2 Layer 3 multicast

doyle never goes away… multicast:

on a multiaccess network, OSPF DRothers send updates to the OSPF DR and BDR at; the DR sends packets to the DRothers at

Some Well-Known Reserved Multicast Addresses
Address Group All systems on this subnet All routers on this subnet DVMRP routers All OSPF routers OSPF designated routers RIP-2 routers EIGRP routers PIM routers CBT routers Cisco-RP-Announce Cisco-RP-Discovery