ccna certification hyderabad

ccna certification hyderabad.Chapter 2 IP Addresses.19 - is responsible for segmenting the packet and providing packet reassembly information in the segmented extended packet header. High-level should try to avoid sending packets that require segmentation. 5 AH packet header: corresponds to the next packet header value of 51 and provides authentication, data integrity checking and anti-replay protection. 6 ESP packet header: the next packet header value is 50, which provides authentication and data confidentiality, data integrity checking and anti-playback protection. 7 Upper Layer Packet Header: Usually used to transmit data. For example, TCP, UDP, OSPF, EIGRP, and ICMPv6 correspond to next packet header values of 6, 17, 89, 88, and 58, respectively.2.2.4 IPv6 Address TypesThere are three types of IPv6 addresses: unicast, anycast, and multicast, and within each address there are one or more types of addresses, such as link-local, aggregatable global, loopback, and indeterminate addresses for unicast; link-local and aggregatable global addresses for anycast; and specified and request node addresses for multicast. The following is a description of several common address types.(1) Link Local address is enabled on a node or interface with IPv6 stack, and the interface of the node is automatically configured with a link local address, which is prefixed with FE80::/10, and then composed by EUI-64 extension. The link-local address is mainly used for automatic address configuration, neighbor discoverydiscovery, router discovery, and routing updates.(2) Aggregatable Global Unicast AddressesIANA (Internet Address Authority Board) assigns an IPv6 address prefix in the IPv6 address space as an aggregatable globalunicast address, which usually consists of a 48-bit global prefix, a 16-bit subnet ID, and a 64-bit interface ID. The composition of an aggregatable global unicast address is shown in Figure 2-11. The current IANA-assigned aggregatable global unicast address starts with binary "001" and has an address range of 2000.3FFF, i.e., 2000::/3, which represents 1/8 of the entire IPv6 address space. The subnetting of the IPv6 address space is not intended to save addresses, but to support the hierarchical design of the network. Logical design. IPv6 subnetting is based on the number of routers and the networks theyThe addressing hierarchy is built based on the number of routers and the networks they support.Global Prefix Interface ID Interface 1D