ccna r&s dumps pdf

ccna r&s dumps pdf

1111 1110 11xx xxxx ! If an OSPF in- process route cannot be summarized: The BGP4+ configuration of R1 is as follows: R5 release B segment RIP routing, R2 and R3 can learn, at the moment we are in R2 and R3 are on to OSPF to inject RIP routing, assuming that R2 injected first, then the B route will be R1 update to R3 , R3 this When you learn B routing from both RIP and OSPF , then it will: The router uses this information to construct a new Layer 2 header for the data frame and then forwards the message to the outbound interface pointing to the next hop. The PMTU discovery protocol is defined in RFC1981 . IPv6 PMUTD uses ICMPv6 Type 2 messages. The typical process is as follows: Sourced in sev-epoch 1 Encap length 14 IPv6 B Image test: Y Ipv6 unicast-routing interface fastEthernet 0/0 ALG and IPV4 single protocol network host B maintain an IPV4 session. ALG is responsible for session conversion between IPV4 and IPV6 . This ALG has dual stack support capabilities. For example, suppose ALG is a dual stack and can act as a server for SMTP ALG . Then A can be based on IPV6 of After completing this configuration, we can show it: We see that the ICMPv6 message of this RS is the head of IPv6 , and the head of IPv6 is the head of IPv4 . Note the header of the outer IPv4 , the source is 1.1.1.1 , the purpose is 2.2.2.2 Complete the basic interface IP configuration . Add the following configuration on R2 : System Id Interface fast1/0 Ipv6 mtu 1400 The above command defines the source address allowed to be IPv6 nat , matching with an IPv6 ACL . 8 bits Then, in order for R3 to dynamically learn the routing of production and office servers, it is now necessary to redistribute these two static routes into OSPF . Of course, there are tricks when re-publishing. Bgp router-id 1.1.1.1 Image ! Route summary technology background This meaning of the above commands is to use 2001: 0001 :: / 64 as a prefix, and an additional 64bits the EUI-64 format of the interface ID , interface configuration globally unique IPv6 address. IPv4 Application Ipv6 address 2001:12::1/64 Image [Experiment 2 ] There are subnet routes (match); there are default routes, subnet routes Offset-list 1 out 1 serial 0/0 Activate IPv6 IS-iS on the interface Image Using this feature may reduce the performance of the device to a certain extent. In addition, you must ensure that CDP is enabled for both the neighbor and the router interface . Process switching and CEF support this feature, but dCEF does not. X NDP can help us achieve the following features: Router request ( RS ) 3 : MD5 verification. Management distance ( Administrative Distance , referred to as the AD ) When ISP1 when down, and GW connected ISP1 interface not DOWN (such as closing ISP1 the CDP ), since the GW lost ISP1 of CDP IPv6 basic experiment The PMTU here refers to the one-way, the smallest of the data outbound MTU along the way . IPv6 addressing Prefix re-addressing allows a smooth transition from the previous network to the new prefix, and intra-site nodes use stateless autoconfiguration (or other re-addressing methods, but not as transparent as stateless auto-configuration methods), which allows the prefix to be re-edited The address process is transparent to the nodes in the site, that is,ccna r&s dumps pdf, the nodes in the station are completely "uninformed" or "non-aware", and the deployed actions are completed on the router, and the switching process is smooth.