practica #4

Spanning Tree Protocol

Introduccion
Spanning Tree Protocol (STP) es un protocolo de red de nivel 2 de la capa OSI . Está basado en un algoritmo diseñado por Radia Perlman mientras trabajaba para DEC. Hay 2 versiones del STP: la original (DEC STP) y la estandarizada por el IEEE (IEEE 802.1D), que no son compatibles entre sí. En la actualidad, se recomienda utilizar la versión estandarizada por el IEEE.
Su función es la de gestionar la presencia de bucles en topologías de red debido a la existencia de enlaces redundantes (necesarios en muchos casos para garantizar la disponibilidad de las conexiones). El protocolo permite a los dispositivos de interconexión activar o desactivar automáticamente los enlaces de conexión, de forma que se garantice que la topología está libre de bucles. STP es transparente a las estaciones de usuario.



Material



cable UTP cruzado y derecho
cable de consola cisco
cable usb-serial
switsch catalyst 1900

Desarrollo

se procede a armar la maqueta, se asignan las ip's de los equipos y se checa la conexion entre equipos por medio del comando ping se busca el switch root que sera por decir asi el raiz por el que va pasar el trafico entre los switch mediante la identificacion de su direccion mac, se desconecta el switch root y se vuelve a checar cual es ahora el switch root y la conectividad con ping para observar el funcionamiento del STP.

Practica #3

objetivo:
conocer el menu de configuracion del switch catalyst 1900

material:
*switch catalyst 1900
*cable usb-serial
*cable de consola cisco

desarrollo:

**************************opcion M de menu**************************************************************
Catalyst 1900 Management ConsoleCopyright (c) Cisco Systems, Inc. 1993-1999All rights reserved.Standard Edition SoftwareEthernet Address: 00-D0-06-91-F1-00
PCA Number: 73-3122-03PCA Serial Number: FAB03183DAVModel Number: WS-C1912-ASystem Serial Number: FAB0321V0TAPower Supply S/N: PHI031402JZPCB Serial Number: FAB03183DAV,73-3122-03-------------------------------------------------
1 user(s) now active on Management Console.

User Interface Menu
[M] Menus

[I] IP Configuration

[P] Console Password

Enter Selection: M
Catalyst 1900 - Main Menu
[C] Console Settings

[S] System

[N] Network Management

[P] Port Configuration

[A] Port Addressing

[D] Port Statistics Detail

[M] Monitoring

[B] Bridge Group

[R] Multicast Registration

[F] Firmware

[I] RS-232 Interface

[U] Usage Summaries

[H] Help
[X] Exit Management Console
Enter Selection: H
*****************************************ayuda******************************************************

[N]ext help screen,

[S]et help level,

[X]it to Main menu:

Port 1 Addressing *******************************************************************************************+
Catalyst 1900 - Port 1 Addressing
Address : Unaddressed
----------------------- Settings ---------------------------------------

[T] Address table size Unrestricted

[S] Addressing security Disabled

[K] Clear addresses on link down Disabled

[U] Flood unknown unicasts Enabled

[M] Flood unregistered multicasts Enabled
----------------------- Actions ----------------------------------------

[A] Add a static address

[D] Define restricted static address

[L] List addresses

[E] Erase an address

[R] Remove all addresses
[C] Configure port

[V] View port statistics

[N] Next port

[G] Goto port

[P] Previous port

[X] Exit to Main Menu

System Configuration **********************************************************************************+*

Catalyst 1900 - System Configuration System Revision: 5 Address Capacity: 1024 System UpTime: 0day(s) 00hour(s) 43minute(s) 15second(s)
----------------------- Settings ---------------------------------------

[N] Name of system

[C] Contact name

[L] Location

[S] Switching mode FragmentFree

[U] Use of store-and-forward for multicast Disabled

[A] Action upon address violation Suspend

[G] Generate alert on address violation Enabled

[I] Address aging time 300 second(s)

[P] Network port None

[H] Half duplex back pressure (10-mbps ports) Disabled

[E] Enhanced congestion control (10-mbps ports) Disabled
----------------------- Actions ----------------------------------------

[R] Reset system

[F] Reset to factory defaults
----------------------- Related Menus ----------------------------------

[B] Broadcast storm control

[X] Exit to Main Menu

Enter Selection: N
This command assigns an administrative name for this system.By convention, this is the system's fully-qualified domain name.
Enter a name using a maximum of 255 characters:
Current setting ===>
New setting ===> switch01



switching mode ********************************************************************************************

Enter Selection: S
FragmentFree switching mode reduces bridge delay by making theforwarding decision after 64 bytes have been received.In contrast, Store-and-Forward switching modewaits until the entire frame has been received before the forwardingdecision is made. This command sets the switching mode.
Select Store-and-Forward[1], or FragmentFree[2]:
Current setting ===> FragmentFree

Monitoring Configuration ******************************************************************************
Catalyst 1900 - Monitoring Configuration
----------------------- Settings ---------------------------------------

[C] Capturing frames to the Monitor Disabled

[M] Monitor port assignment None Current capture list: No ports in list
----------------------- Actions ----------------------------------------

[A] Add ports to capture list

[D] Delete ports from capture list
[X] Exit to Main Menu

Port 1 Configuration *******************************************************************************
Catalyst 1900 - Port 1 Configuration
Built-in 10Base-T 802.1d STP State: Forwarding Forward Transitions: 1
----------------------- Settings ---------------------------------------

[D] Description/name of port

[S] Status of port Suspended-no-linkbeat

[F] Full duplex Disabled

[I] Port priority (spanning tree) 128 (80 hex)

[C] Path cost (spanning tree) 100

[H] Port fast mode (spanning tree) Enabled
----------------------- Related Menus ----------------------------------

[A] Port addressing

[V] View port statistics

[N] Next port

[G] Goto port

[P] Previous port

[X] Exit to Main Menu

Enter Selection: D
A string of up to 60 characters may be specified to name or describea port. For example, port 3 may be given a name such as'Software Engineering segment'.
Enter port description/name (60 characters max):
Current setting ===>
New setting ===>

Bridge Group Configuration *******************************************************************************++
Catalyst 1900 - Bridge Group Configuration
Bridge Group Member Ports -----------------------------------------------------------------------

1 1-12, AUI, A, B 2 None 3 None 4 None
----------------------- Settings ---------------------------------------

[O] Overlapping of Bridge Groups Permitted Disabled
----------------------- Actions ----------------------------------------

[M] Move member ports

[X] Exit to Main Menu

Bridge Group Configuration *****************************************************************************
Catalyst 1900 - RS-232 Interface Configuration
----------------------- Group Settings ---------------------------------

[B] Baud rate 9600 baud

[D] Data bits 8 bit(s) [S] Stop bits 1 bit(s)

[P] Parity setting None
----------------------- Settings ---------------------------------------

[M] Match remote baud rate (auto baud) Enabled

[A] Auto answer Enabled [N] Number for dial-out connection

[T] Time delay between dial attempts 300

[I] Initialization string for modem
----------------------- Actions ----------------------------------------

[C] Cancel and restore previous group settings

[G] Activate group settings
[X] Exit to Main Menu

Firmware Configuration ***********************************************************************************
Catalyst 1900 - Firmware Configuration
----------------------- System Information -----------------------------

FLASH: 1024K bytes V9.00.07 : Standard Edition Upgrade status: No upgrade currently in progress.
----------------------- Settings ---------------------------------------

[S] TFTP Server name or IP address

[F] Filename for firmware upgrades

[A] Accept upgrade transfer from other hosts Disabled
----------------------- Actions ----------------------------------------

[U] System XMODEM upgrade

[D] Download test subsystem (XMODEM)

[T] System TFTP upgrade

[X] Exit to Main Menu

Multicast Registration **********************************************************************************
Catalyst 1900 - Multicast Registration
Registered multicast addresses: 0
----------------------- Actions ----------------------------------------

[R] Register a multicast address

[L] List all multicast addresses

[U] Unregister a multicast address

[E] Erase all multicast addresses
[X] Exit to Main Menu
Network Management **************************************************************************************
Catalyst 1900 - Network Management
[I] IP Configuration [S] SNMP Management [B] Bridge - Spanning Tree [C] Cisco Discovery Protocol [G] Cisco Group Management Protocol [H] HTTP Server Configuration [R] Cluster Management
[X] Exit to Main Menu

status port ****************************************************************************************
Catalyst 1900 - Port 1 Configuration
Built-in 10Base-T 802.1d STP State: Forwarding Forward Transitions: 1
----------------------- Settings ---------------------------------------

[D] Description/name of port

[S] Status of port Suspended-no-linkbeat

[F] Full duplex Disabled [I] Port priority (spanning tree) 128 (80 hex)

[C] Path cost (spanning tree) 100

[H] Port fast mode (spanning tree) Enabled
----------------------- Related Menus ----------------------------------

[A] Port addressing

[V] View port statistics

[N] Next port

[G] Goto port

[P] Previous port

[X] Exit to Main Menu

Enter Selection:
This command may be used to enable a port that has been disabled orsuspended, or to disable a port that is in any operational status.
Port status may be [E]nabled or [D]isabled:
Current setting ===> Suspended-no-linkbeat


Enter Selection: D
A string of up to 60 characters may be specified to name or describea port. For example, port 3 may be given a name such as'Software Engineering segment'.
Enter port description/name (60 characters max):
Current setting ===>
New setting ===> happy shiny port