1 15 stratum number cisco ccent cram guide v30 paul

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<1-15> Stratum number
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Cisco CCENT Cram Guide v3.0 © Paul Browning 2017 or the commands beginning with the letters you have typed: Cabling Hub Switch Router Workstation Hub Crossover Crossover Straight Straight Switch Crossover Crossover Straight Straight Router Straight Straight Crossover Crossover Workstation Straight Straight Crossover Crossover Pinouts Crossover Pinouts 1 3 2 6 3 1 6 2 Straight Through 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 Rollover (PC to Console/Aux port) 1 8 2 7 3 6 4 5 5 4 6 3 7 2 8 1 Two types of crosstalk can occur on twisted pair cables: Near end crosstalk (NEXT) and Far end crosstalk (FEXT) You can change the interface speed and duplex settings which are usually set to auto (and this can cause issues). 9 Router#show interface FastEthernet0 FastEthernet0 is up, line protocol is up Hardware is DEC21140AD, address is 00e0.1e3e.c179 (bia 00e0.1e3e.c179) Internet address is 1.17.30.4/16 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255 Encapsulation ARPA, Loopback not set, keepalive set (10 sec) Half-duplex, 10Mb/s, 100BaseTX/FX Router(config)#int f0 Router(config-if)#duplex ? auto Enable AUTO duplex configuration full Force full duplex operation half Force half-duplex operation
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Cisco CCENT Cram Guide v3.0 © Paul Browning 2017 If you need to console to a router, here are the settings: Router Management Console port: a PC connected to the console port via a rollover cable. Used for initial configuration or disaster recovery. Virtual Terminals: normally accessed by telnetting to the router. Five lines available numbered 0-4 (could be more lines depending on the Router/Switch model). Auxiliary port: normally a modem connected to this port. TFTP server: the router can get its configs or IOS from a server (PC for example) running TFTP software and holding the necessary files. 10 NMS: network management station. Uses SNMP to manage the router normally via a web style interface. Switch(config-if)#duplex full Router#config t Router(config)#interface g0/0 Router(config-if)#speed ? 10 Force 10 Mbps operation 100 Force 100 Mbps operation 1000 Force 1000 Mbps operation auto Enable AUTO speed configuration
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Cisco CCENT Cram Guide v3.0 © Paul Browning 2017 CDP / LLDP Cisco Discovery Protocol runs only on Cisco devices (proprietary), it allows you to gather information about other routers and switches. It is enabled by default. This command displays the neighboring router or switches hostname, hardware platform, port identifier and capabilities list. This command displays more detail than the previous one. You can view IP address, IOS release and duplex setting. To turn CDP off an interface use the command: To turn CDP off on your entire router or switch use the command: LLDP is an open standard under IEEE standard 802.1AB and shares many of the same commands and outputs as CDP. It’s disabled by default.
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  • Winter '17
  • James Smith
  • Computer Science, IP address, Paul Browning, Cram Guide v3, CCENT Cram Guide, Cisco CCENT Cram