ccnp switch notes

ccnp switch notes

To this end, some organizations and manufacturers propose to layer the data link layer, which is divided into logical link control sub-layer ( LLC ) and media access control sub-layer ( MAC ). Such different physical layers correspond to different MAC sublayers, and the LLC sublayer can be completely independent. As shown in Figure 1-4 . Neighbor 4.4.4.4 update-source Loopback0 neighbor 10.1.25.2 remote-as 200 Both SW1 and SW2 can learn, and three-year-olds can do it. Ip default-gateway 192.168.100.254 Interface fast0/0 The EBGP route should be better. I saw R5 and went to see R3 : R4 released the RIP route of 100.1.1.0/24 , which can be learned by both ASBRs . The solution is to configure static summary routes on the two ASBRs : Ip address 5.5.5.5 255.255.255.0 Neighbor 1.1.1.1 remote-as 123 R1(config)# ip prefix-list list1 deny 172.16.32.0/21 R1(config)# ip prefix-list list1 permit 0.0.0.0/0 le 32 R1(config)# route-map test permit 10 Switch(config)# vlan 20 1 : RIP-1 ; C 1.1.1.0 is directly connected, Loopback0 2.0.0.0/32 is subnetted, 1 subnets When an AS receives a route to the same destination but passes through two ASs , it determines the local-pref value of the two routes. SW2 realizes that there is a relay information option in the DHCP message, which is option82 , but giaddr is all 0s . Although SW2 realized this problem, he still gave this data to the DHCPserver through the debug information on the DHCPserver : In the above output, the metric part of the red bold is the IGP metric that reaches the NEXT_HOP attribute address locally . We find that from R3 and R5 , the metric is 2 , then if we connect R4 to the interface of R3 , that is, F0/ 0 port OSPF Neighbor 10.1.13.1 remote-as 100 DMZ-Link Bw 193 kbytes Access-list 2 permit 192.168.2.0 0.0.0.255 route-map PBR permit 10 So looking at the above picture, two VLANs are created on the Layer 3 switch : 10 and 20 , and the addresses of the SVIs of the two VLANs are assigned as the user gateways of the respective VLANs , so that the routing table of the switch is There are routes for two VLAN segments. Then, when the two VLANs need to communicate with each other,ccnp switch notes, the user of VLAN 10 will drop the data to his own gateway, that is , the SVI of VLAN 10. After the data arrives at SVI10 , the Layer 3 switch looks up the table and finds that the destination is the network segment where VLAN 20 is located. Throw the data out of VLAN 20 and eventually reach the destination VLAN 20 of the PC .