When the interface is functioning as a DCE device
The interface is configured as a DCE device.
You should configure the clock rate at the DCE device. ALWAYS The routers will not work right if you forget to do this.
When it needs to provide clocking for the serial line. This occurs when you are using a null-modem cable in a lab. You would apply the clock rate to the router that is connected as the DCE device.
router> enablerouter# configure terminalrouter(config) interface serial (interface number)router(config-if) no shutdownrouter(config-if) endrouter#substitute (interface number) for the actual int number.. eg serial 0/1you can find the number of the interface by using show interfaces from privileged mode
there may be the issue with the layer 2 protocol like hdlc or ppp is not configured or wrongly configured if the interface is serial interface.
The FastEthernet interface of R1 is disabled. One of the default routes is configured incorrectly. A routing protocol is not configured on both routers. The default gateway has not been configured on both routers.
The default route must be configured such as: Ip route 0.0.0.0 0.0.0.0 serial 0/0 etc.
admin down basically means that an adminstrator shutdown the interface for any number of reasons, and if the admin wanted to, they could bring it back up with the 'no shutdown' command.
a serial interface on a router is basically used for WAN communications. we generally connect to other routers through internet using serial interface. In a lab scenario we generally emulate WAN connections by connecting the serial interfaces of the routers using a cable called DCE/DTE cable.
To configure the clock rate for the hardware connections on serial interfaces such as network interface modules (NIMs) and interface processors to an acceptable bit rate, use the clock rate interface configuration command. Use the no form of this command to remove the clock rate if you change the interface from a DCE to a DTE device. Using the no form of this command on a DCE interface sets the clock rate to the hardware-dependent default value.
It would connect to the serial port interface of a router.
The serial port must be configured for speed, parity type, character frame and protocol.
The command is: clock rate 56000 So it will appear on the command line interface as: Router(config-if)# clock rate 56000 Reference: Networking by Jeffrey Beasley Chapter 6 page 216.
show invetory y
lmfao you really thought you where going to get the answer
Router(config-if)#no frame-relay lmi-type cisco
1. The command show controllers serial [interface number]can be used to determine whether your serial interface is a DCE or DTE interface. An abbreviated listing of the displayed results for the show controllers serial 0 command is shown. The Serial0/0 interface is a V.35 DCE cable. This command should be used when you have an RJ-45 connection.2. The V.35 cables are typically labeled to indicate whether they are a DTE or DCE cable.3. Inspect the end of the V.35 cable to determine whether it is made (DTE) or female (DCE)
Configure a static route on R1 using the IP address of the serial interface on R1. Configure a default route on R1 with the exit interface Fa0/0 on R1. Configure a static route on R1 using the IP address of S0/0/0 on R2. Configure a default route on R1 using the IP address of Fa0/0 on R2.
"show interfaces" "show ip interface brief"
EIGRP will use up to 50 percent of the bandwidth of a link, as defined by the bandwidth interface configuration command. This command may be used if some other fraction of the bandwidth is desired. Note that values greater than 100 percent may be configured. The configuration option may be useful if the bandwidth is set artificially low for other reasons.ExamplesThe following example allows EIGRP to use up to 75 percent (42 kbps) of a 56-kbps serial link in autonomous system 209:interface serial 0bandwidth 56ip bandwidth-percent eigrp 209 75
No, bluetooth is a serial interface.