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SWITCHING

EXCELLENT

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GUESTBOOK

2. Describe the functionality of CGMP

CGMP (Cisco Group Management Protocol)

• Administer multicast traffic network.
• Runs on switches and routers.
• Works hand-in-hand with Internet Group Membership Protocol (IGMP), running on routers, to control the flooding of multicast traffic in a network.
• Proprietary.
• Without it the Catalyst switch forwards all multicast traffic to all ports assigned to the same VLAN.
• Join messages are originated from the router and sent to a Catalyst switch which will cause the switch to dynamically build switching table entries to map multicast traffic to a multicast host's switch port.

IGMP

• Multicast protocol that directly affects hosts.
• Allows hosts to inform routers that they want to receive multicast traffic for a specific multicast group address.
• Many switches don't understand IGMP messages unless having the NFFC (NetFlow Feature Card) installed.
• Appears to Catalyst® Switch like any other multicast frames.
• Used between hosts and routers in a LAN environment to track multicast groups of which the hosts are members.

10. Describe LAN segmentation using switches.

Catalyst 5000 architecture

• 5 ASICs: SAMBA, SAINT, SAGE, EARL, and Phoenix.

11. Name and describe two switching methods.

Catalyst 5000 architecture

• 5 ASICs: SAMBA, SAINT, SAGE, EARL, and Phoenix.

12. Describe full and half-duplex Ethernet operation.

Catalyst 5000 architecture

• 5 ASICs: SAMBA, SAINT, SAGE, EARL, and Phoenix.

13. Describe Token Ring switching concept.

Catalyst 5000 architecture

• 5 ASICs: SAMBA, SAINT, SAGE, EARL, and Phoenix.