SPOILER ALERT!
Cisco CCNP/ BCMSN Examination Tutorial: Dynamic Trunking Protocol (DTP).
Hundeleine occur to be likely to incorporate to your CCNA knowledgebase each and every action of the technique when you take place to be learning to go the BCMSN take a look at on the way to earning your CCNP certification. Nowhere is that more than configuring a trunk in between two switches.
You know that IEEE 802.just one Q (" dot1q") and ISL are your two selections of trunking methods, and you know the principal variances in amongst the 2. What you may well perhaps not have in fact regarded is that there is a 3rd trunking protocol which is functioning in about your Cisco switches, and when it is truly a transparent technique to various, you skilled remarkable know about it for your BCMSN and other CCNP examinations!
The Cisco-proprietary Dynamic Trunking Protocol (DTP) actively makes an attempt to get the occupation finished out a trunk backlink with the remote change. This appears amazing, but there is a cost in overhead - DTP frames are transmitted each and every one 30 seconds. If you appear to a final decision to proven up a port as a non-negotiable trunk port, there is unquestionably no requirement for the port to mail out DTP frames.
DTP can be shut off at the consumer interface degree with the switchport nonegotiate command, on the other hand as you see down below, you can not transform DTP off up right until lastly the port is no extended in vivid preferable trunking way. (Dynamic desirable is the default manner for rather a few Cisco swap ports.).
SW2( config) #int quick /eight.
SW2( config-if) #switchport nonegotiate.
Command declined: Conflict in involving 'nonegotiate' and 'vivid' position.
SW2( config-if) #switchport method?
entry Set trunking manner to Receive unconditionally.
dynamic Set trunking mode to dynamically operate out obtain or trunk strategy.
trunk Established trunking technique to TRUNK unconditionally.
SW2( config-if) #switchport process trunk.
SW2( config-if) #switchport nonegotiate.
When you might be carrying out the work with Cisco variations in a household laboratory or rack rental ambiance, run IOS Guidance routinely to see what alternatives are conveniently provided for the guidance you might be experimenting. Cisco improve ports have quite a many alternatives, and the very finest way to find them is with one easy impression - the issue mark!
You know that IEEE 802.just one Q (" dot1q") and ISL are your two selections of trunking methods, and you know the principal variances in amongst the 2. What you may well perhaps not have in fact regarded is that there is a 3rd trunking protocol which is functioning in about your Cisco switches, and when it is truly a transparent technique to various, you skilled remarkable know about it for your BCMSN and other CCNP examinations!
The Cisco-proprietary Dynamic Trunking Protocol (DTP) actively makes an attempt to get the occupation finished out a trunk backlink with the remote change. This appears amazing, but there is a cost in overhead - DTP frames are transmitted each and every one 30 seconds. If you appear to a final decision to proven up a port as a non-negotiable trunk port, there is unquestionably no requirement for the port to mail out DTP frames.
DTP can be shut off at the consumer interface degree with the switchport nonegotiate command, on the other hand as you see down below, you can not transform DTP off up right until lastly the port is no extended in vivid preferable trunking way. (Dynamic desirable is the default manner for rather a few Cisco swap ports.).
SW2( config) #int quick /eight.
SW2( config-if) #switchport nonegotiate.
Command declined: Conflict in involving 'nonegotiate' and 'vivid' position.
SW2( config-if) #switchport method?
entry Set trunking manner to Receive unconditionally.
dynamic Set trunking mode to dynamically operate out obtain or trunk strategy.
trunk Established trunking technique to TRUNK unconditionally.
SW2( config-if) #switchport process trunk.
SW2( config-if) #switchport nonegotiate.
When you might be carrying out the work with Cisco variations in a household laboratory or rack rental ambiance, run IOS Guidance routinely to see what alternatives are conveniently provided for the guidance you might be experimenting. Cisco improve ports have quite a many alternatives, and the very finest way to find them is with one easy impression - the issue mark!
.)