Interested to Buy Any Domain ? << Click Here >> for more details...
Q: why are switch trunking modes ( dynamic auto , dynamic
desirable )used in switch while trunking? if only
negotiation is the factor it can be done with one mode as
well ie dynamic desirable . but why we need dynamic auto.
coz it dsnt negotiates ..at all
please post answer asap
thanks :
- 2 Answers
- 10364 Views
- I also Faced
- E-Mail Answers
Answer Posted / jijiisme
both two mode are administrative mode. just for
administrative purpose only. this mean not really run for
the real because of security reason. I can explain how each
mode work.
dynamic desirable : initiates negotiation messages and
responds to negotiation messages to dynamically choose
whether to start using trunking, and defines the trunking
encapsulation.
I refer this definition form ICND2 book. the simple meaning
is the interface that used "dynamic desirable mode" is
define the encapsulation or protocol ( 802.1q or ISL). ISL
is not support now. so only one 802.1q left. So we can
simply define this mode is leader mode decision maker mode.
ok so the rest mode
dynamic auto : Passively waits to receive trunk negotiation
messages,at which point the switch will respond and
negotiate whether to use trunking, and if so, the type of
trunking.
I also refer this for ICND2 book.
this "dynamic auto" mean follower mode. right, that is
really simple.
when two interface connect one interface must be leader and
another must be follower : this condition is only for
administrative only.
in real word the mode "trunk" and protocol is defined by
admin for security purpose.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
What is difference between switch & hub?
Suppose there are 3 pc's pc1 pc2 and pc3 all are connected with each other pc 1 is able to ping pc2 and pc3 but pc2 and pc 3 not able to ping pc 1 then what is an issue troubleshoot it?
Explain the term 'broadcast'.
How many reserve ports?
Tell me how many reserve ports?
What are the advantages of lan switching?
Which type of updates eigrp protocol do?
Can you explain voluntary and compulsory tunnels?
What is the default bandwidth size of t1 routers?
What does the show protocol display?
What is a Frame Relay?
Which protocol works only on cisco routers?
Which decision called socket base?
How do you depict an IP address?
Name the protocol which can do load balancing on unequal cost also?
