ccna course

ccna course

The packet contains a maximum of 25 routing entries. When a router connects through a multi-access medium such as Ethernet, a dynamic mechanism is needed to discover each other, such as ARP . ARP can map Layer 2 addresses to IP . If it is a frame relay multipoint link, the adjacency relationship can be learned by using an address resolution protocol, a mapping table,ccna course, and the like. The default is 6 update cycles, which is 180s . The route entry tag when an entry with a larger hop count is received Image Offset-list Acl number in/out offset value interface 0 7 15 31 !! When the route matching ACL1 when Please see the three cups of Black Tea " IPv6 Notes", visit ccietea.com for the latest version. Type escape sequence to abort. RIP Version 2 Protocol Analysis The maximum hop count is still 15 hops 192.168.2.0/24 IPv6 routing Ip address 10.1.12.1 255.255.255.0 The configuration of R1 is modified as follows ( the configuration of R2 is similar): Image Image Sequence of next hops. The acceptable range is from 1 to 65535. !! Attention tunnel mode The following is an example of an NA message: #源 server 1 OR2 configuration Ip default-gateway Unused For R2 , it is now in its own process 1 , while learning the route of this OE2 from R1 and R3 , how will it choose? Review 6VPE basic experiment ! Image Image R2#show ipv6 interface brief ! This idea has been applied to dynamic routing protocols such as OSPF . Careful children's shoes will find that after you deploy route summarization in OSPF , it will automatically generate a summary route pointing to null0 locally . The reason is explained above. the same. Image 16 bits Bgp router-id 2.2.2.2 Image Image Image ICMPv6 TYPE Port-channel Ethernet Channel of interfaces IP Image After this time has elapsed, the route entry will become 16 hops, marking the unreachable route possibly down . Gateway of last resort is not set Image Adjust the parameters of the prefix announcement Distance vector routing protocol Feature overview UDP Image Now do a test, R1 on the ping www.ccietea.com , we will find: Image Length, or mask length. When paired with the above ACL , some students will even write On R2 , in order to reach the network connected by R1 , R2 configures a tool that uses route summarization, referring to a summary route: 192.168.0.0/16 to R1 , although this does serve the purpose of network optimization, but this summary route Too "rough", it even includes the network segment on the R3 side, we call this behavior not accurate enough. Therefore, an ideal way is to use a "just right" summary route that includes these detailed routes, so that you can avoid the problem of insufficient aggregation.