cisco ccnp enterprise core 350-401 encor

cisco ccnp enterprise core 350-401 encor

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1.2.b DTP and VTP (v1&v2) (ICND2) The following output illustrates how to configure dynamic sticky learning on a port and restrict the port to dynamically learn up to a maximum of 10 MAC addresses: VTP Lab bpduguard Enable timer to recover from bpdu-guard error disable state dtp-flap Enable timer to recover from dtp-flap error disable state Walkthrough 5.Configure the link between the switches as trunk ports and no shut them. To verify that SSH is enabled on the switch, enter the following command: R2(config-if)#ip add 172.16.1.2 255.255.0.0 R2(config-if)#no shut 4.3.cClient Test direct connectivity using ping 4 interfaces using DTP network 10.10.10.0 Standard numbered ACLs are the easiest to configure, so this is the best place to start. Standard ACLs can only filter based on a source network or IP address. 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. Correct domain and VTP password? 5.Configure the link between the switches as trunk ports and no shut them. R1#show ipv6 route static IPv6 Routing Table - 6 entries counters Control aging of interface counters dhcp Enable DHCP server and relay agent 6.Set interface to trunk on the left switch. The ports connecting the switch to the router are usually trunk ports As you know, the switchport command isn’t required on the 2960 switch because the interface is already running in Layer 2 mode. Switch(config)#vtp password Cisco321 Default Gateway. : 0.0.0.0 Router#show ip bgp ? Learn how to verify and configure CDP and LLDP settings on Cisco switches. Read today’s lesson notes (below) Review yesterday’s lesson notes and labs Complete today’s labs show vtp status / show vtp password Switch-1(config-vlan)#name Example-VLAN-10 Switch-1(config-vlan)#exit Protect Purpose switchport mode access switchport port-security Figure 10.12 illustrates a single switch using two different VLANs, each with an assigned IP subnet. Although the network hosts depicted in the figure are connected to the same physical switch, because they reside in different VLANs, packets between hosts in VLAN 10 and those in VLAN 20 must be routed, while packets within the same VLAN are simply switched. summary-address Summary-address redistribution information timers OSPF timers information Invalidation timers: These are used to mark routes as unreachable when updates for those routes are not received for a long time. Switch-1(config-if)#switchport trunk encapsulation dot1q Switch-1(config-if)#switchport mode trunk Router(dhcp-config)#dns-server 8.8.8.8 Router(dhcp-config)#domain-name Network+ Router(dhcp-config)#lease 30 1.Add VLAN2 to the switches. 4.Check the LLDP entry again. Normal and detailed. Topology In order to understand how floating static routes work, you first need to learn (or be reminded of) the administrative distance (AD) attribute of the routes. Each type of route is assigned a numerical value that tells the router which route should be preferred. The lower the number, the stronger the candidate for insertion into the routing table. This is one of the hardest parts to understand. I’ve never seen a complete list of rules written down in one Cisco manual. Some refer to them generally or explain some of them, but then miss others completely. The difficulty is that the rules always apply but (until now) you found them only by trial and error. Here are the rules you need to know: exec-wait Delay EXEC startup on noisy lines finger Allow responses to finger requests SwitchA#show vlan brief ipv6 Address family Enabling and Disabling LLDP There will often be situations where you have VLANs 20 to 50, for example, on one side of your network and 60 to 80 on the other. It doesn’t make sense for VLAN information from the switches on one side to be passed to every switch on the other. For this reason, switches can prune unnecessary VLAN Router(config)#access-list 1 permit 192.200.1.0 0.0.0.63 Switch#configure terminal Switch(config)#lldp run Switch(config)#end 2.5.b 802.1Q A default command on the router configuration will be ip domain-lookup. If this command has been disabled, then DNS won’t work. Sometimes router administrators disable it because when you mistype a command you have to wait several seconds while the router performs a lookup. You can turn off DNS lookups with the following command: Learn how to configure VLANs and trunk links. We cover trunking in far more detail tomorrow. SwitchA(config)#vlan 2 SwitchA(config-vlan)#name passhot Total MAC Addresses 6 Router#show ip ospf ? The following example shows the router IP address 172.16.1.1 as the default route: Switch-1(config)#interface GigabitEthernet0/2 Switch-1(config-if)#switchport Day 13 – Review ------------------------------------------------ advertisement version: 2 Duplex: full The following output illustrates how to configure a switch port to dynamically learn and secure up to two MAC addresses on interface GigabitEthernet0/2: Switch-1(config-if)#switchport mode access Switch-1(config-if)#switchport access vlan 5 Switch-1(config-if)#switchport voice vlan 7 Switch-1(config-if)#switchport port-security The following output illustrates how to enable port security on an interface and to configure a static secure MAC address of 001f:3c59:d63b in VLAN 5 on a switch trunk port: Good ACL configuration skills come with knowledge and practice. The full DHCP request and assign process can be seen in Figure 14.2 below: Generally, you can look at the configuration syntax for extended ACLs, as follows: Switch-1(config)#interface GigabitEthernet0/2 Switch-1(config-if)#switchport In the following example, we programmed switchport F0/6 with a default configuration so that it will support the new data and voice VLANs that we will be adding. You can use the IP phone in Packet Tracer to copy the configuration below. Just make sure that you add the power supply by dragging it to the power socket on the IP phone; otherwise, no interfaces will come up. %SYS-5-CONFIG_I: Configured from console by console show vlan brief R1(config)#router rip NTP is a protocol that is designed to time-synchronize a network of machines. NTP is documented in RFC 1305 and runs over UDP. R1#show ip route 80.1.1.1 Routing entry for 80.1.1.0/24 DHCP Servers on Cisco Routers Last Source Address:Vlan : 0001.C7DD.CB19:1 After this is implemented, you start getting calls from your end-users saying Standard ACLs Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP U - Per-user Static route, M - MIPv6 Trunking VLANs Enabled: ALL Pruning VLANs Enabled: 2-1001 Capture Mode Disabled Vlan Mac Address Type Ports Remaining Age Referencing the total MAC addresses, we can determine that the switchport port-security mac-address sticky command was issued and specified five secure sticky addresses, while the switchport port-security mac-address was issued and specified one secure address because, by default, these addresses are not defined. %SYS-5-CONFIG_I: Configured from console by console debug ip dhcp server events debug ip dhcp server packet Counting to infinity Split horizon Poison reverse Hold-down timers router rip version 2 no auto !!!!! # times multi & trunk 0 Purpose 5.Last step are to check the commands to enable LLDP per interface and disable per device. Static Host Routes Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: dot1q Negotiation of Trunking: On Topology S* 198.10.1.0/24 [1/0] via 161.44.191.1 It is worth noting that if you have a switch set to transparent mode in- between two other switches, then pruning will not work. R1(config-subitf)#description ‘Subinterface For VLAN 20’ R1(config-subif)#encapsulation dot1Q 20 Physical Address. 0001.C7DD.CB19 5.4.c. (ii) Telnet/SSH 6.Set interface to trunk on the left switch. S 3FFF:1234:ABCD:2::/64 [1/0] 5.Your IT manager changes his mind and wants only SSH access, so change this on your VTY lines. Only certain models and IOS versions will support the SSH command. Walkthrough another protocol. For example, RIP might consider a path that is only two hops long as the most optimal path to a destination network, even though the links were 64Kbps links, while advanced protocols such as OSPF and EIGRP might determine that the most optimal path to that same destination is the one traversing four routers but using 10Gbps links. Static Host Routes Router(config)#access-list 1 permit 172.16.2.1 Router(config)#interface FastEthernet0/0 Router(config-if)#ip access-group 1 in Spend 15 minutes on the subnetting.org website Router#ping R2 Router#pinging 192.168.1.2 Maximum number of concurrent server connections allowed: 16 Server idle time-out: 180 seconds Day 10 – Routing Concepts Optimal routing Stability Fa0/4 7-12 Day 15 – IPv4 Access Lists R2(config-router)#network 172.16.0.0 Other issues outside the CCNA syllabus include authentication mistakes and route filtering. You could be asked about split horizon (covered earlier), exceeding the maximum hop count, or a firewall blocking RIP traffic. Also, bear in mind that ACLs filter all traffic not specifically permitted. We cover permitting RIP via an ACL entry in the ACL section. Because CDP is a Layer 2 service it does not require IP addresses to be configured in order to exchange information. The interface need only be % LLDP is not enabled Switch#conf t Switch(config)#lldp run Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/0 Maximum number of concurrent server connections allowed: 16 Server idle time-out: 180 seconds arp-inspection Disabled Take today’s exam at passhot.com Spend 15 minutes on subnetting.org IP address range Subnet mask Lease duration Default gateway DNS server WINS server Auto Negotiation - not supported R1#show ipv6 route static function is to discover attached Cisco devices. You may not want other Cisco devices to see information about your network devices, so you can turn this off,cisco ccnp enterprise core 350-401 encor, at least on the devices at the edge of your network which connect to other companies or your ISP. Finally, we can determine that no security violations have been detected on the interface or port as the counter still has a value of 0. The last source MAC address will be recorded when traffic hits the interface. Standard numbered ACLs are the most basic form of ACL you can apply to the router. While they are the easiest to configure, they have the most limited range of filters available. They can only filter based on the source IP address or network. The way to recognize a standard ACL is by the number which precedes the configuration lines; these numbers will be from 1 to 99. VLAN Trunking Protocol (VTP) is a Cisco proprietary Layer 2 messaging protocol that manages the addition, deletion, and renaming of VLANs on switches in the same VTP domain. VTP allows VLAN information to propagate through the switched network, which reduces administration Instructions Router(config)#ip route 192.168.1.0 255.255.255.0 s0/0 Routing algorithms, while different in nature, all have the same basic objectives. While some algorithms are better suited for certain networks than others are, all routing protocols have their advantages and disadvantages. Routing algorithms are designed with the following objectives and goals: Challenge 2 – Switchport Security Lab Other types of tools you can use are standard ping and traceroute utilities in order to verify end-to-end connectivity. They can also show relevant output Switch(config)#no ip http server communicate only with routers in the same domain or area. This reduces the amount of information that routers in the domain or area must process, which allows for faster convergence within the network. 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. We have covered a lot of ground so far. Don’t worry about how much is left to learn though. Review the main learning points from switch security, routing concepts, static routing and RIP. Understanding Vectors Chassis id: 0001.64EE.CB19 Port id: Gig0/1 R1(config)#interface FastEthernet0/1 R1(config-if)#ip add 10.20.20.1 255.255.255.0 R1(config-if)#exit via FE80::3333, Serial0/1 Switch1(config)#int FastEthernet0/2 Switch1(config-if)#no cdp enable Ping R2 Loopback from R1 to test connectivity Sending 5, 100-byte ICMP Echos to 2001:AAAA:BBBB:CCCC::1, timeout is 2 seconds: Total Addresses in System : 2 Port Mode Encapsulation Status Native vlan Fa0/2 on 802.1q trunking 1 3.7 Configure, verify, and troubleshoot RIPv2 for IPv4 (excluding authentication, filtering, manual summarization, redistribution) [Output Truncated] Vlan Mac Address Type Ports Remaining Age The output of the show ntp status command indicates that the clock is synchronized to the configured NTP server (10.0.0.1). This server has a stratum of 5, hence the local device reflects a stratum of 6. An interesting observation when NTP is configured is that the local time still defaults to GMT, as can be seen in the bolded section above. To ensure that the device displays the correct time zone, you must issue the clock timezone command on the device.

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