Posts Tagged ‘interface’

Bitmindframes cisco study guides

DTP Dynamic Trunking Protocol

Trunk negotiation is managed by the Dynamic Trunking Protocol (DTP), which is a Cisco proprietary Point-to-Point Protocol.
These various modes are configured using the switchport mode interface command
Switch trunk interfaces support different trunking modes.

• Access
• Dynamic desirable (default mode on Catalyst 2950 and 3550)
• Dynamic auto
• Trunk
• Non-negotiate
• dotq-tunnel (Not an option on the Catalyst 2950.) Read the rest of this entry »

Tags: 802.1q, interface, ip, study, guides, vtp

Introducing the Topology:

The show controllers command reveals whether the cable is DCE or DTE.

#show controllers serial 0/0/0

Interface serial0/0/0
Hardware is powerQUICC MPC860
DCE v.35, no clock

Interfaces:
By default all Serial and Ethernet interfaces are down.
The routing table will be empty.

Debugging:

Allows us to watch changes a router performs in real time.
For example, to observe routes being added and removed.

#debug ip routing
#undebug all (disables all debug commands). or
#no debug all. or
#un a. (short form)

Read the rest of this entry »

Tags: 802.1q, study, vlan, switch, vtp, wan