200 301 ccna videos

200 301 ccna videos

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We have already covered the available options to configure IPv6 addressing on an interface. You can manually add your own addresses or just rely on address autoconfiguration to apply one. Auto-negotiation RouterB# SLAAC – Stateless Autoconfiguration M and O bits set to 0 means that there is no DHCPv6 information. The host receives all necessary information from an RA. Router#conf t Connect network devices such as printers and PCs Give access to network servers and routers Segment the network with VLANs Just for completeness, I will add the host addresses and the broadcast addresses. You can quickly work out the broadcast address by taking the next subnet value and subtracting 1: In the examples above, each binary bit is turned on for the host portion. Why is UDP used at all? TCP uses a lot of bandwidth on the network and there is a lot of traffic sent back and forth to set up the connection, even before the data is sent. This all takes up valuable time and network resources. UDP packets are a lot smaller than TCP packets and they are very useful if a really reliable connection is not that necessary. Protocols that use UDP include TFTP. Version ID : V02 Cisco has laid down design recommendations for the campus LAN. After all, if you want to build a network that can scale as the business grows, you need to carefully consider the short-term and long-term goals of the company. Understanding these goals will help you choose the appropriate network topologies when building the campus LAN. The 16-bit reserved IPv6 global prefix The 16-bit provider-owned prefix The top row represents your subnet increment and the left column your subnet mask. Using this part of the chart, you could answer any subnetting question in a few seconds. If you want to add the part of the chart which tells you how to answer any design question, such as “How many subnets and hosts will subnet mask ‘X’ give you,” just add a “powers of two” section. Ring Day 1 Lab Decimal – 0,1,2,3,4,5,6,7,8,9 Default router information Flags and/or Options fields 3FFF:1234:ABCD:7890:213:19FF:FE86:A20, subnet is 3FFF:1234:ABCD:7890::/64 [PRE] 01111111= 126 Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname RouterB Applying Route Summarization Layer 1 – Physical Layer Instructions The IPv6 Neighbor Discovery Protocol (NDP) IPv6 stateful autoconfiguration If you feel your head spinning right about now, this is normal. It takes a while for all of this to finally click, I’m afraid. Dynamic (this will be discussed shortly) Class D addresses range from 224.0.0.0 to 239.255.255.255 and are used for multicasting (directed broadcasts). Class E addresses range from 240.0.0.0 to 255.255.255.254 and are for experimental use only. Switch(config)#int f1/0/1 Switch(config-if)#speed ? Hexadecimal (or hex) is an alternative numbering system. Rather than counting in 2s or by 10, 16 numbers or characters are used. Hex starts at 0 and goes all the way up to F, as illustrated below: When downtime is not an option, a mesh topology can be considered. Full- mesh networks provide a connection to each device from every other device. This solution is often used with WAN connections. R2(config)#ipv6 unicast-routing R2(config)#interface FastEthernet0/0 R2(config-if)#ipv6 address autoconfig default R2(config-if)#exit The Preferred Form Test the IPv6 concepts and commands detailed in this module on a pair of Cisco routers that are directly connected: 755 input errors, 739 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort Layer 2 – Data Link Layer The upper section of the chart (not shown here) tells us that three ticks down in the left column gives you a mask of 224 or /27 (3 stolen bits). 1.14Compare and contrast IPv6 address types 9.Convert B5 from hex to binary and decimal * 0 CTY - - - - - 0 0 0/0 Routers Day 2 Lab Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(25)FX, RELEASE SOFTWARE (fc1) The only way to work out a summary route is by converting the IP address into binary (sorry). If you don’t do this, then you will have no way of knowing whether you are advertising the correct summary route, which will lead to problems on your network. Switch#show interface f0/1 Any number can be made up using binary values. The more binary values you add, the larger the number becomes. For every binary value you add, you double the next number (e.g., 1 to 2 to 4 to 8 to 16,200 301 ccna videos, and so on into infinity), starting at the right and moving left. With two binary digits, you can count up to 3. Just place a 0 or a 1 in the column to decide whether you want to use that value. Figure 2.4 below shows a multicast packet capture. Multicast addresses cannot be used for hosts on a network. You will usually see multicast addresses used by routing protocols to send updates to devices configured as part of the routing domain that needs to receive routes. They can also be used by streaming video events such as concerts. Multicast addresses range from Link-Local Addresses I’d like to delve into packet layer analysis of IPv6, as well as the many types of headers available, but there isn’t space here to do so, and since it isn’t tested in the exam there is no need to include it. Instead, I will focus on what you need to know for the exam and your role as a Cisco engineer. Verify the configuration using the show ipv6 interface and show ipv6 interface prefix commands Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname RouterB You can easily remember the names of the layers with the mnemonic “All People Seem To Need Data Processing.” I would certainly get used to referring to each layer by its number because this is how real-world network technicians use the OSI. CLEI Code Number : COM3K00BRA Hardware Board Revision Number : 0x01 Find out why the person wants to ping the switch in the first place. If you do want to ping a switch, there needs to be an IP address configured on it; in addition, the switch needs to know how to get traffic back out (the default gateway). 10.255.255.255 Although vendors used individual approaches to create VLANs, a multi- vendor VLAN must be carefully handled to deal with interoperability issues. For example, Cisco developed the ISL standard that operates by adding a new 26-byte header, plus a new 4-byte trailer, encapsulating the original frame as illustrated in Figure 5.16 below. To solve incompatibility problems, IEEE developed 802.1Q, a vendor-independent method to create interoperable VLANs.

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