Archive for the ‘Switching’ Category

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 »

Configuring a Web Interface:

Switches have web-based config tools that require an onboard HTTP server:
Web browser GUI.
Security Device Manager (SDM).
IP Phone and Telephony apps.
HTTP services ? security hole ? optional authentication.
If many users access HTTP services you may require a separate authentication server.
AAA and TACACS can be used to validate user credentials, (robust).
A less complex method allows use of the enable password.
A local authentication method requires the user to use a login username and password specified in the config.

S1(config)#ip http server ? turns on the server (on by default).
S1(config)#ip http authentication enable.

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