Clock Rate Cisco

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Clock Rate Cisco

It's pretty common for individuals, especially new network professionals, to get the two interface commands speed and bandwidth mixed up. Most believe that when applied to an interface, the Cisco bandwidth command and speed command have the same meaning and that the goal is to lower the interface's throughput to the limit given by bandwidth or speed. The two commands have completely different scopes, and they do not limit the actual speed in any way.

Cisco CCNA Configuring a Serial Interface. By default, Cisco routers are all data terminal equipment (DTE) devices, so you must tell an interface to provide clocking if you need it to act like a DCE device. You configure a DCE serial interface with the clock rate command.

  1. When I enter the clock rate command. Clock rate 1000000. I receive the following error: '%Error: Unsupported clock rate for this interface' Im am sure it is the DCE side as the sh controllers s0/0 command indicates that the interface is indeed DCE. When I try the help command clock rate?, I can see the full list of clock rates, only when I.
  2. Set the time zone. When you reset the time zone, the clock will reset. This means that if you set the.
  3. This article and the video below will clarify the confusion around using the clock rate command and bandwidth command. Clock Rate is the actual speed of data transfer- physical speed of an interface, It is used usually by the service provider on the serial interface when the customer needs to connect two sites together.

Cisco Bandwidth Command

Configure Clock Rate Cisco Router

The Cisco bandwidth command is used to communicate the bandwidth value of an interface to higher-level protocols (Ex. routing protocols).

Set the inherited and received bandwidth values for an interface using the bandwidth statement in interface configuration mode. To restore the default bandwidth settings, use the no form of this command.

or

inherit(Optional) Inherited bandwidth. Specifies how a subinterface inherits the bandwidth of its main interface.
receive(Optional) Receiver bandwidth. Entering this option enables asymmetric transmit/receive operations so that the transmitted (inherit [kbps]) and received bandwidth are different.

The Cisco bandwidth command is an optional but frequently used interface command. Despite the name, it is not intended to limit bandwidth, and it cannot be used to change an interface's actual capacity. The interface bandwidth command is used to inform higher-level protocols about the interface's speed.

The majority of the time, a routing protocol has to know the interface speed in order to determine the appropriate route. TCP will also change its initial retransmission parameters based on the bandwidth configured on the interface as a result of this operation.

Speed Command

The explanation for the speed command is actually simpler than the bandwidth command. You can set the speed on some interfaces (hardware dependent). You can set it to 10 Mbps even if the interface is 100 Mbps. This indicates that the interface is allowed to send packets at speeds of up to 10 Mbps. You may ask, 'What if we set the interface speed to 10 Mbps, does that mean OSPF or EIGRP will generate metrics based on that value?' Yes, of course.

Cisco Router Set Time Zone

What will you do, though, if the speed command has a value other than the normal 10 Mbps or 100 Mbps? 1 Mbps, for example. You can't change the speed to 1. Or if you have a hardware card that won't let you go faster than 1 Gbps? That's why the bandwidth command is used to inform the higher-level protocols about the actual bandwidth capacity.

or

Clock Rate Command

On serial links, this command is used to set the clock rate. While both ends of the serial link can set the clock rate, the router will only accept the command from the DCE end (usually an ISP modem).

or

Clock Rate Cisco Router

Clock Rate Cisco

Clock Rate Cisco

It's pretty common for individuals, especially new network professionals, to get the two interface commands speed and bandwidth mixed up. Most believe that when applied to an interface, the Cisco bandwidth command and speed command have the same meaning and that the goal is to lower the interface's throughput to the limit given by bandwidth or speed. The two commands have completely different scopes, and they do not limit the actual speed in any way.

Cisco CCNA Configuring a Serial Interface. By default, Cisco routers are all data terminal equipment (DTE) devices, so you must tell an interface to provide clocking if you need it to act like a DCE device. You configure a DCE serial interface with the clock rate command.

  1. When I enter the clock rate command. Clock rate 1000000. I receive the following error: '%Error: Unsupported clock rate for this interface' Im am sure it is the DCE side as the sh controllers s0/0 command indicates that the interface is indeed DCE. When I try the help command clock rate?, I can see the full list of clock rates, only when I.
  2. Set the time zone. When you reset the time zone, the clock will reset. This means that if you set the.
  3. This article and the video below will clarify the confusion around using the clock rate command and bandwidth command. Clock Rate is the actual speed of data transfer- physical speed of an interface, It is used usually by the service provider on the serial interface when the customer needs to connect two sites together.

Cisco Bandwidth Command

Configure Clock Rate Cisco Router

The Cisco bandwidth command is used to communicate the bandwidth value of an interface to higher-level protocols (Ex. routing protocols).

Set the inherited and received bandwidth values for an interface using the bandwidth statement in interface configuration mode. To restore the default bandwidth settings, use the no form of this command.

or

inherit(Optional) Inherited bandwidth. Specifies how a subinterface inherits the bandwidth of its main interface.
receive(Optional) Receiver bandwidth. Entering this option enables asymmetric transmit/receive operations so that the transmitted (inherit [kbps]) and received bandwidth are different.

The Cisco bandwidth command is an optional but frequently used interface command. Despite the name, it is not intended to limit bandwidth, and it cannot be used to change an interface's actual capacity. The interface bandwidth command is used to inform higher-level protocols about the interface's speed.

The majority of the time, a routing protocol has to know the interface speed in order to determine the appropriate route. TCP will also change its initial retransmission parameters based on the bandwidth configured on the interface as a result of this operation.

Speed Command

The explanation for the speed command is actually simpler than the bandwidth command. You can set the speed on some interfaces (hardware dependent). You can set it to 10 Mbps even if the interface is 100 Mbps. This indicates that the interface is allowed to send packets at speeds of up to 10 Mbps. You may ask, 'What if we set the interface speed to 10 Mbps, does that mean OSPF or EIGRP will generate metrics based on that value?' Yes, of course.

Cisco Router Set Time Zone

What will you do, though, if the speed command has a value other than the normal 10 Mbps or 100 Mbps? 1 Mbps, for example. You can't change the speed to 1. Or if you have a hardware card that won't let you go faster than 1 Gbps? That's why the bandwidth command is used to inform the higher-level protocols about the actual bandwidth capacity.

or

Clock Rate Command

On serial links, this command is used to set the clock rate. While both ends of the serial link can set the clock rate, the router will only accept the command from the DCE end (usually an ISP modem).

or

Clock Rate Cisco Router

NOTE
The clock rate specifies how many bits can be transmitted at a certain period. When the clock rate is set to 64000, you'll never be able to send more than 64 Kbps through the interface.

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