What is Cisco config register?

Configuration Register is a special 16 bits value that can be configured in Cisco routers. It is mainly used in three cases; To determine how the router boots. To determine boot options. To set console speed.

What is 0x2102 config register?

The factory-default setting for the configuration register is 0x2102. This indicates that the router should attempt to load a Cisco IOS® software image from Flash memory and load the startup configuration with a console speed of 9600 baud.

How do I enter VLAN in configuration mode?

Config-vlan In global configuration mode, enter the vlan vlan-id command. To exit to global configuration mode, enter the exit command. To return to privileged EXEC mode, enter the end command, or press Ctrl-Z. VLAN configuration From privileged EXEC mode, enter the vlan database command.

What is config register 0x2142?

In this example, the configuration register shows 0x2142. The router bypasses the startup configuration stored in NVRAM during its boot sequence. This feature is normally used during a password recovery procedure.

How do I change my Cisco config register?

To change the configuration register settings from the Cisco IOS CLI, complete the following steps:

1. Connect a terminal or PC to the router console port.
2. Configure your terminal or terminal emulation software for 9600 baud (default), 8 data bits, no parity, and 2 stop bits.
3. Power on the router.

How do I change my ROMmon config register?

How configure config register in ROMmon?

1. Boot into the ROMmon mode.
2. Change the configuration register such that the startup config is not loaded.
3. Boot into IOS.
4. Go to the privileged exec mode and copy startup config to running config.
5. Change the passwords.
6. Save the running config to startup config.

What is a VLAN IP address?

Same thing, the VLANs IP address is a Switch Virtual Interface (commonly called a SVI), in essense it is an interface (albeit logical) and plays the same role as a routers interface which has an IP address. It provides a gateway for inter-VLAN or inter-routing traffic.

How do I change my Cisco settings?

Use Cisco Unified CallManager Administration to modify > Device > Phone > Phone Configuration. URL of the server from which the phone obtains message services. Use Cisco Unified CallManager Administration to modify > Device > Phone > Phone Configuration. URL of the help text that appears on the phone.

How do you find the current setting on your configuration register?

To view the current setting of the configuration register, establish a console or Telnet session with the router. Issue the show version command, and input the contents into the Output Interpreter.

How do I Configure my VLAN in Cisco?

To access VLAN configuration mode, enter the vlan global configuration command with a VLAN ID. Enter a new VLAN ID to create a VLAN, or enter an existing VLAN ID to modify that VLAN. You can use the default VLAN configuration (Table 11-2) or enter commands to configure the VLAN.

How many VLANs are there in Cisco Catalyst?

Layer 2 VLAN Configuration on a Cisco Switch (with Example) This post will deal with creating Layer 2 VLANs on Cisco switches and performing all relevant configurations. Up to 4094 VLANs can be configured on Cisco catalyst switches.

Where are extended range VLAN IDs stored in Cisco?

The extended-range VLAN IDs are allowed for any switchportcommands that allow VLAN IDs. Extended-range VLAN configurations are not stored in the VLAN database, but they are stored in the switch module running configuration file, and you can save the configuration in the startup configuration file by using the copy running-config startup-config

What to know about multicast VLAN registration ( MVR )?

Refer to the configuration guide at Understanding Multicast VLAN Registration for more information on MVR. This document provides a simple topology: a stack of Catalyst 3750 Switches with multicast source/receivers connected to it, a working configuration, and output of commands to verify whether the MVR works or not when a stream is sending.