McDewey

ISL: Length = 76 ISL: Constant value = 0xAAAA03 ISL: Vendor ID = 0x8C958B ISL: Virtual LAN ID (VLAN) = 2 ISL: Bridge Protocol Data Unit (BPDU) = 0 ISL: Port Index = 193 ISL: Reserved ISL: ETHER: ----- Ethernet Header ----- ETHER: ETHER: Destination = Multicast 01000CDDDDDD !--- Send to the CGMP !--- macaddress present in show cam sys !--- command output. ETHER: Source = Station Cisco11411E1 ETHER: 802.3 length = 24 ETHER: LLC: ----- LLC Header ----- LLC: LLC: DSAP Address = AA, DSAP IG Bit = 00 (Individual Address) LLC: SSAP Address = AA, SSAP CR Bit = 00 (Command) LLC: Unnumbered frame: UI LLC: SNAP: ----- SNAP Header ----- SNAP: SNAP: Vendor ID = Cisco1 SNAP: Type = 2001 (CGMP) SNAP: CGMP: ----- CGMP ----- CGMP: CGMP: Version = 16 CGMP: Type = 0 (Join) CGMP: Reserved CGMP: Count = 1 CGMP: CGMP: Group Destination Address and Unicast Source Address CGMP: CGMP: GDA =0000.0000.0000 CGMP: USA =0000.0C14.11E1 !--- MAC address of the router. CGMP: The frame 1 result is on the switch, with 3/1 being the port that is connected to the router: Frame 2 Frame 2 is an IGMP membership report sent by the host to request (or confirm) that users want to receive traffic for group 239.10.10.10. ISL: ----- ISL Protocol Packet ----- ISL: ISL: Destination Address = 01000C0000 ISL: Type = 0 (Ethernet) ISL: User = 0 (Normal) ISL: Source Address = 8C958B7B1000 ISL: Length = 76 ISL: Constant value = 0xAAAA03 ISL: Vendor ID = 0x8C958B ISL: Virtual LAN ID (VLAN) = 2 ISL: Bridge Protocol Data Unit (BPDU) = 0 ISL: Port Index = 195 ISL: Reserved