9tut 350 401

9tut 350 401

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receiving switch ingress port, the tag is removed and the data is forwarded to the intended destination. R1(config-subitf)#description ‘Subinterface For VLAN 10’ R1(config-subif)#encapsulation dot1Q 10 Switch(config-if)#switchport access vlan 10 Switch(config-if)#no shut The following example shows the router IP address 172.16.1.1 as the default route: Network Time Protocol To turn off CDP for a particular interface, issue the following command: Interface IP-Address OK? Method Status Protocol FastEthernet0/0 10.10.10.2 YES DHCP up up VLAN Name Status Ports i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area Wildcard masks are essential to learn because they are used as part of command line configuration in ACLs and some routing protocols. They exist because there has to be a way to tell the router which parts of an IP address or network address you want to match. When troubleshooting routing issues the standard approach is to follow the routing table for every route along the path. You might perform a traceroute to find out exactly where the packets are going and to see the routers along the path. This way you would know exactly which device might be causing the issues and you can start investigating the routing tables of the specific routers. Router1 Fas 0/1 169 R C1841 Fas 0/0 6.Configure the same commands on Switch B now. For VLAN creation,9tut 350 401, put the PC port into VLAN 2, and set the interface to “access” and the trunk link to “trunk.” The service dhcp command is turned on by default, but sometimes it has been manually disabled by a network administrator for some reason. (I’ve seen network administrators call Cisco with urgent routing issues on their network after they entered the no ip routing command on their router – seriously!) ACL Rule 3 – There is an implicit “deny all” at the bottom of every ACL. Learn how to configure inter-VLAN routing using router subinterfaces. Gateway of last resort is not set Switch#show interfaces FastEthernet1/1 switchport Name: Fa0/2 To enable SSH you must have a version of IOS that supports encryption. A quick way to find this out is the show version command. Look for K9 in the file name and/or the security statement of Cisco Systems. Switch-1#show port-security interface gi0/2 Port Security : Enabled 1.Check the current DTP settings on your switch. Configure different port speeds/auto-negotiation on various switch ports Verify the port parameters with the show run and the show interface commands R 172.16.1.0 [120/1] via 192.168.1.1, 00:00:04, FastEthernet0/0 4.1Describe DNS lookup operation ACL Rule 3 – There is an implicit “deny all” at the bottom of every ACL. Verifying that the routing table is valid IOS (tm) C2960 Software (C2960-I6Q4L2-M), Version 12.1(22)EA4, RELEASE SOFTWARE(fc1) Is the VLAN blocked on the trunk? This is one reason why dynamic routing protocols are used. With dynamic routing protocols, the router experiencing the issue would notify the other routers on the network that there was a problem and that they should either stop passing traffic or forward it via a different path. Switchport: Enabled ------------------------------------------------------------------ isl - Interface uses only ISL trunking encapsulation when trunking Switch-1(config-if-range)#switchport access vlan 10 Switch-1(config-if-range)#switchport mode access Switch-1(config-if-range)#exit System Description:Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.4(3)M3, RELEASE SOFTWARE (fc2)Technical Support: http://www.cisco.com/techsupportCopyright (c) 1986-2015 by Cisco Systems, Inc.Compiled Fri 05- Jun-15 13:24 by prod_rel_team Troubleshooting Static Routes To verify that SSH is enabled on the switch, enter the following command: Platform: cisco 2960, Capabilities: Switch On the switch, the single link connected to the router must be configured as a In addition to DHCP server functionality, Cisco IOS routers also permit configuring the interfaces as DHCP clients. This means that interfaces will require an address using the standard DHCP process, and any server present on the specific subnet can allocate the IP addresses. allocated to a particular VLAN IP address : 192.168.1.2 Trying 192.168.1.3 ...Open KEEP OUT OR Key name: HTTPS_SS_CERT_KEYPAIR.server Temporary key 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 R1(config-if)#ipv6 add 2001:aaaa:bbbb:cccc::1/64 R1(config-if)#no shut max-metric Max-metric origination information mpls MPLS related information Troubleshooting DNS Issues Capture VLANs Allowed: ALL Protected: false 3.Issue the show ip route command on R2. Ping statistics for 192.168.1.1: The DHCP Pool Configuration mode is also the place where you can configure other DHCP options. In the configuration output above, the following parameters were configured: Switch1(config)#no enable password Switch1(config)#enable secret cisco Switch1(config)#do show run Building configuration... Configure different port speeds/auto-negotiation on various switch ports Verify the port parameters with the show run and the show interface commands Last Source Address:Vlan : 0001.C7DD.CB18:1 * - candidate default, U - per-user static route, o - ODR, P - periodic downloaded static route access-list 101 deny tcp 10.1.0.0 0.0.255.255 host 172.30.1.1 eq telnet You can erase most lines of configuration by issuing it again with the word no before the command. It is also worth noting that, as Farai says, you can issue a service password-encryption command, but this only offers weak (level 7) encryption, whereas below, the secret password has strong (MD5) encryption : R 172.16.1.0 [120/1] via 192.168.1.1, 00:00:04, FastEthernet0/0 Port Vlans allowed and active in management domain Fa0/6 10, 20 When troubleshooting port security, it is important to check the configuration that has been implemented by first using the show running-config interface RIPv2 Change the Native VLAN DHCP packets need to be permitted through your router if you are using a server on another subnet to administer DHCP configurations. DHCP uses broadcast messages as part of its process (which routers won’t forward), so the IP address of the DHCP server needs to be added to the router to allow it to forward the broadcast message as a Unicast packet. The command ip helper-address [ip address] achieves this. This is another exam-favourite question! They refer to it as DHCP relay in the exam syllabus.

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