cisco 300-420 ensld

cisco 300-420 ensld

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Used bandwidth and throughput Global port security configuration parameters can be validated by issuing the show port-security command. The following shows the output printed by this command based on default values: Switch(config)#vlan 3 Switch(config-vlan)#interface vlan3 Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone Manual (Static) Trunk Configuration Instructions 　　　　　　(P) Repeater, (S) Station, (O) Other Device ID Local Intf Hold-time Capability Port Routing Information Sources: Topology You can verify the native VLAN with the commands (issued per interface) illustrated in the output below: Switch uptime is 1 hour,cisco 300-420 ensld, 8 minutes System returned to ROM by power-on 10data active Day 14 Tasks Port Security Actions Switch-1#show mac-address-table dynamic Mac Address Table Dynamic Trunking Protocol (DTP) (P) Repeater, (S) Station, (O) Other 1.Check the current CDP settings on your switch. Switch(config-if)#switchport trunk encapsulation dot1q Switch(config-if)#switchport mode trunk Switch(config-if)#switchport nonegotiate Switch(config-if)#exit Day 7 – CDP and LLDP Switch#show port-security interface FastEthernet0/1 Port Security : Enabled Switch#show interfaces FastEthernet1/1 switchport Name: Fa0/2 BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(25r)SEC, RELEASE SOFTWARE (fc4) Error Disable Recovery pt-vty-logging Log significant VTY-Async events Connect to the switch using a console connection. Router(config)#int FastEthernet0/0 Router(config-if)#no ip access-group 1 in Router(config-if)#^Z Chassis id: 0200.2222.2222 Port id: Gi0/1 VTP Modes After confirming that the connectivity between the devices is correct, the next logical step is investigating Layer 2 configuration, starting with the configured encapsulation method on the trunk ports, which is usually 802.1Q, the preferred method. Next, make sure that the same encapsulation is configured on both ends of the trunk link. 6.Add a SVI to VLAN1 and then telnet to the switch using that IP address to test the username and password. Dynamic secure MAC addresses are dynamically learned by the switch and are stored in the MAC address table. However, unlike static secure MAC addresses, dynamic secure MAC address entries are removed from the switch when the switch is reloaded or powered down. These addresses must then be relearned by the switch when it boots up again. Learn how to configure voice VLANs on a Cisco switch. Learn how to configure IPv6 static routes. ------------------------------------------------------------------ 3.Set your trunk link to trunk mode. Switching Concepts 2.Create VLAN 2 on the switch. I’ve used Packet Tracer for this lab but you can use your own home lab if you have access to all the available equipment. Set the displayed IP address on each PC and put the default gateway to 10.10.10.254 for the top PC and 10.20.20.254 for the bottom PC. Here is the top PC configuration: Re-read notes from days 5-7 and redo the labs Complete today’s challenge labs This catches many engineers out. There is an invisible command at the bottom of every ACL. This command is set to deny all traffic which hasn’t been matched yet. The only way to stop this command coming into effect is to configure a “permit all” at the bottom manually. For example, take an incoming packet from IP address 172.20.1.1: 1.You will need to add IP addresses on each PC. Feel free to choose your own, as long as they are on the same subnet! Troubleshooting DNS Issues Day 6 – Trunking and DTP 5.Now add a static default route on R1 to send any traffic for any Day 14 Tasks Based on the output above, the switch is sending DTP packets every 30 seconds. The timeout value for DTP is set to 300 seconds (5 minutes), and 4 interfaces are currently using DTP.

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