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Text File  |  2001-02-23  |  1.4 KB  |  25 lines
  1. úFILE_LAYOUT=media/standart/layout1.mc
  2. QUIZZ_TYPE=MULTY_CHOICE
  3. //FILE_IMAGE=media/
  4. FILE_CHECK=media/rb.gif
  5. QUESTION=Why do Cisco Catalyst switches use CGMP instead of just using IGMP?
  6. NAME_QUESTION=Why do Cisco Catalyst switches use
  7. RIGHT_ANSWER=4
  8. ANSWER1=Cisco's proprietary code is easier to compile into IOS.
  9. ANSWER2=Cisco catalysts don't understand IGMP packets.
  10. ANSWER3=Routers need switches to translate IGMP requests into CGMP requests in order to process them.
  11. ANSWER4=Catalysts can't distinguish between membership report packets and actual multicast data packets.
  12. REACTION1=
  13. REACTION2=
  14. REACTION3=
  15. REACTION4=Because IGMP is an overloaded protocol, the switches cannot distinguish between membership report packets and normal IGMP packets containing data. The router must run CGMP in order to translate the IGMP requests received from the hosts into something the switch can process.
  16. TXT_LINK1=Cisco Group Management Protocol (CGMP)
  17. TXT_LINK2=Cisco Group Management Protocol (CGMP)
  18. TXT_LINK3=Cisco Group Management Protocol (CGMP)
  19. TXT_LINK4=Cisco Group Management Protocol (CGMP)
  20. LINK1=s093+357a
  21. LINK2=s093+357a
  22. LINK3=s093+357a
  23. LINK4=s093+357a
  24. TEXT_SHOW_ANSWER=Because IGMP is an overloaded protocol, the switches cannot distinguish between membership report packets and normal IGMP packets containing data. The router must run CGMP in order to translate the IGMP requests received from the hosts into something the switch can process.
  25.