ccnp r&s training

ccnp r&s training

3.3.3.3 By the original impact of routing attributes ? Y Internet (well-known community) Since the flash space is very limited, it is recommended to store the file on the TFTP server. When deploying on a TFTP server, be careful to first create an empty file to correspond to the URL in the configuration command . This file is used for dhcp snooping bingding database writes (depending on the device). Eliminate routing loops by horizontal splitting When a data frame is sent from the Hybrid port, the switch determines whether the attribute of the VLAN on the port is Untag or Tag . If it is Untag , first strip the VLAN tag of the frame and then send it ; if it is a Tag , send the frame directly. Ip address 192.168.10.254 255.255.255.0 172.16.10.1 , in fact, this IP may be understood as 172.16.0.0/16 within the network, but also in 172.16.10.0/24 within the network,ccnp r&s training, of course, here we can see it, then who is more accurate? It is clear that 172.16.10.0/24 is more accurate, we say that its matching length is longer than 172.16.0.0 . Open loopback on R2 , IP is 172.16.10.0/24 , 172.16.11.0/24 That is to say, R5 goes to 100.0.1. and 2.0 each has two paths, which are through 10.1.25.2 and 3.3.3.3 , and finally R5. Router ospf 1 parameter Configuration Example 3 (at a single routing protocols -OSPF ) Understand the invalid arp entry Experiment 1 0 ? 11 SW1#sh int trunk BGP router identifier 12.12.12.12, local AS number 64512 BGP table version is 2, main routing table version 2 By default, no rate limit is configured. SW2 puts the server into the same VLAN as the PC , which is equivalent to pure pass-through. Ip as-path access-list 2 permit _2$ Network Next Hop Metric LocPrf Weight Path 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.