Hello Group,
My Name is Rajgopal and I am based in Bombay,India.I have a question for you
guys.
I have read in the CCNA 2.0 Exam Certification guide by Wendell Odom that a
DTE is the equipment that receives the Clocking information from a DCE which
is the device that sends the clocking information for sync Links and at the
same time he also says that a serial line comming from the ISP is connected
to a CSU/DSU which in turn is connected to your serial port in the router
and the CSU/DSU is the device which gives the clocking information for the
sync links.
Whereas the ICRC book says that by default the Cisco router is a DTE
equipment and the minute we implement the clocking command on a particular
serial interface then it becomes a DCE device.
Correct me if I am wrong but for the clocking command to work on the
enterprise side we have to enable the clocking command.Then does that
interface become a DCE ??And if it becomes a DCE then doesn't it defy the
rule that a DTE is connected to a DCE ??
The ICRC book also says that in case if you don't have a CSU/DSU u have to
use a back to back cable to connect the 2 routers and the interface on which
u implement the clocking command becomes a DCE interface.But don't u think
that its the ISP which gives u the clocking information??
Please enlighten me on this subject as soon as possible because I have my
CCNA exam on the 21st of Sept,2000 and I would like to be clear on as many
concepts as possible.
Many thanks and please help me out.
Regards,
Raj.
P.s U can email me on the above mentioned address.
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