300-425 enwlsd

300-425 enwlsd

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ACL Rule 9 – Put your ACL as close to the source as possible. Switchport: Enabled As you know, the switchport command isn’t required on the 2960 switch because the interface is already running in Layer 2 mode. The full DHCP request and assign process can be seen in Figure 14.2 below: When the router receives a packet for a directly connected network, the router checks the routing table and then the packet is forwarded to that network, as shown in Figure 10.1 below: 5.4.c. (ii) Telnet/SSH Sending 5, 100-byte ICMP Echos to 2001:AAAA:BBBB:CCCC::2,300-425 enwlsd, timeout is 2 seconds: By having the lease process in place and correlated to the timers presented above, you can be assured that you will always have an IP address in a timely manner without any downtime associated with this and will automatically have a way to build redundancy into the DHCP process. 1.Configure the connections between the routers and ping SW1#show interfaces trunk SW1#show interfaces F0/1 trunk Cisco IOS allows the definition of individual static routes using the ip route global configuration command. With this command, you will specify the subnet, the network mask, and the next hop address, that is, the next step in the path toward the destination. In lieu of a next hop address, you may also use the outgoing interface as shown below: Router(config)#access-list 1 permit host 172.16.1.1 switchport port-security mac-address sticky 0004.c16f.8741 switchport port-security mac-address sticky 000c.cea7.f3a0 switchport port-security mac-address sticky 0013.1986.0a20 switchport port-security mac-address sticky 001d.09d4.0238 switchport port-security mac-address sticky 0030.803f.ea81 Reply from 10.20.20.1: bytes=32 time<1ms TTL=127 Reply from 10.20.20.1: bytes=32 time<1ms TTL=127 Reply from 10.20.20.1: bytes=32 time<1ms TTL=127 4.Check the interface settings again. What has changed? I’ve truncated the output to save space. 2.Ping across the Serial link to ensure that it is working. except all VLANs except the following none no VLANs Known via “static”, distance 1, metric 0 (connected) Routing Descriptor Blocks: SwitchA(config)#int FastEthernet0/2 SwitchA(config-if)#switchport trunk allowed vlan 2 SwitchA(config-if)#^Z 3.Open a command prompt on the 10.10.10.1 device and ping the default gateway. Then ping the PC in VLAN 20 to prove that the sub-interface configuration is working. ACL Rule 4 – The router can’t filter self-generated traffic. 1005 trnet-default active SwitchA# Path length Reliability Shutting down a port is done with the shutdown command under the Interface Configuration mode: Server life time-out: 180 seconds The primary advantage of this solution is that only a single physical interface is required on the router. The primary disadvantage is that the bandwidth of the physical interface is shared between the various configured subinterfaces. Therefore, if there is a lot of inter-VLAN traffic, the router can quickly become a bottleneck in the network. The native VLAN is another important element that you should verify on the trunk ports. Misconfigured native VLANs can lead to a lack of functionality or security issues. The native VLAN should match at both ends of the trunk links. S 10.0.0.0 is directly connected, Serial0/1/0 Troubleshooting DNS Issues Verifying that the end-stations are connected in the proper switch ports Verifying that the proper switch ports are connected in the proper router ports (if a router is used for inter-VLAN routing) Challenge 5 – InterVLAN Routing (Subinterface) Lab * 3FFF:1234:ABCD:1::/64 via interface FastEthernet0/0, distance 1 Switch and Switchport Security Issue a show version command to see the hardware details and IOS version VLAN Name Status Ports Day 15 Tasks Switch#show vtp status VTP Version 2 Configuring Port Security CRC or other types of errors on device interfaces Routing table information Routing Metrics Day 12 Tasks Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2007 by Cisco Systems, Inc. Verifying that the end-stations are connected in the proper switch ports Verifying that the proper switch ports are connected in the proper router ports (if a router is used for inter-VLAN routing) Sending 5, 100-byte ICMP Echos to 2001:AAAA:BBBB:CCCC::1, timeout is 2 seconds: Take today’s exam this to indicate that a route is no longer reachable. This is accomplished by setting the route metric to a maximum value. VLAN and Trunking VLAN and Trunking Link State Routing Protocols In order to practically understand the topics presented in this module, some traffic captures on the devices involved in the examples above will be generated. After the DHCP server is configured and the client workstation boots up, the four-step DHCP process occurs, as can be observed in Figure Port Status : Secure-up Violation Mode : Restrict Inter-VLAN routing using switched virtual interfaces (ICND2 topic) Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/0 ms R2 Fa0/13 91 R Gi0/1 Switch#show interfaces FastEthernet0/1 switchport Name: Fa0/1 Router(config-if)#no ip access-group 1 in Router(config-if)#^Z One of the two MAC addresses is used by the IP phone and the switch learns about this address on the voice VLAN. The other MAC address is used by a host (such as a PC) that may be connected to the IP phone. This MAC address will be learned by the switch on the data VLAN. pagp-flap Disabled port-mode-failure Disabled Request timed out. 7.Recover by adding the correct MAC address to the PC and resetting the interface with a shut and no shut command. Switch1(config)#no cdp run 1002 fddi-default active An NTP network usually gets its time from an authoritative time source, such as a radio clock or an atomic clock attached to a time server. NTP then distributes this time across the network. NTP is extremely efficient; no more than one packet per minute is necessary to synchronize two machines to within a millisecond of one another. 1.Assign all the IP addresses according to the above topology. Router A can be 192.168.1.1/30 and Router B can be .2. There are a few maintenance commands you should enter as well. The ip ssh time-out 60 will time out any SSH connection that has been idle for 60 seconds. The ip ssh authentication-retries 2 will reset the initial SSH connection if authentication fails two times. This will not prevent the user from establishing a new connection and retrying authentication.

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