ccna lab

ccna lab

1 # 102.54.94.97 Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,ccna lab, r RIB-failure, S Stale Ipv6 address 2001::1/128 FastEthernet0/0 Set ip next-hop 22.2.2.2 2001:1::1 Therefore, from here we can see that the route summary is a risk of looping. One way to solve the above problem is to add a static route on the Layer 3 switch: ip route 192.168.0.0 255.255.0.0 null 0 , this way, when it receives access The configuration of R2 is as follows: Note that if you use a virtual machine configuration, you must manually configure the linklocal address on the serial interface. Ip default-network 172.16.3.0 becomes: ip route 172.16.0.0 255.255.0.0 172.16.3.0 ! Set ip next-hop 10.2.2.2 0 packets, 0 bytes switched through the prefix tmstats: external 0 packets, 0 bytes Ip address 202.101.12.1 255.255.255.0 Difficult analysis OSPF can let R3 learn 1.0/24 and 2.0/24 routes. On this topic, the individual feels that there is no need to study it. It does not make much sense for the research of class-based routing protocols. No matter the actual application or the LAB exam, it is no longer involved, and you are interested in making it yourself. Image Route-map nat1 permit 10 match ip address 1 match interface serial0/0 1 17:40:49.491: %BGP-6-NEXTHOP: Invalid next hop (254.128.0.0) received from Configuration example 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. Gateway (default route) Prefix announcement overview Ipv6 address 2002:CA65:0C01::FFFF/64 R3 , R4 running the OSPF , the R3 on each can learn from the R1 and R2 of looback Ip route-cache flow show ip cache flow Mechanism introduction Can be abbreviated as: 2001 : a8 : 207 : 0 : 0 : 0 : 0 : 8207 Image 1/512 The adjacency list in the CEF component is used for MAC or Layer 2 rewrite information. The GRE tunnel is a well-known standard tunneling technology that guarantees a stable and secure end-to-end link. 0200 – 03FF OSPF and RIP Configuration example 2 ( -RIP in a single routing protocol environment ) Image ::FFFF: 4.4.4.4 <0-4294967295> Image 6PE basic experiment Ipv6 enable !! define vrf Interface tunnel1 Ipv6 enable Image Netsh interface ipv6 show interface Image R1#sh ipv6 mtu No bgp default ipv4-unicast neighbor 2001::1 remote-as 12 Image After the configuration is complete, the BGP connection between R2 and R3 can simultaneously deliver IPv4 and IPv6 route prefixes. IPv6 Header BGP metric is set to IGP metric Configuring the sample EIGRP environment RIP Version 2 Carrying Additional Information ! NS 135 NA 136 Metric Passive-interface Fa0/0 neighbour xxxxxx The concept of traditional IP routing Let us review: When the router receives an IP packet, check the IP header of the packet, and take the destination IP of the packet to the routing table for comparison according to the longest matching principle. Finally, Forward the packet. Therefore, traditional IP routing can only be routed based on the purpose of the data. The new routing table is typically sent to neighboring routers on a regular basis, and the triggered update is sent immediately in response to changes in the routing table. Switching, so we can only disable fast switching by : no ip route-cache , which in another sense is to turn on process switching. IS-IS In addition, if the R1 update 1.0.0.0 to R2 , if R1passive out and R2 interconnect interface, invalid after the expiration, R2 on about the 1.0.0.0 route will Pdown , then R2 can still go to 1.0.0.0 , but will not Pass this route to other neighbors, instead sending non-stop messages. At this time, if the interface of R1 is passived , R2 will continue to receive the update, but it will not resume the route immediately, but will enter the holddown timer until the holddown timer expires before accepting the update of the route.