cisco layer 3 poe switch

The layer-3 switch you know works like this. It works like a layer-3 switch. Why do we say that the L3 forwarding performance of a layer-3

The Group was originally connected to a subsidiary using the SDH leased line of China Telecom, and now a new mobile leased line is added, which is actually a transparent link. The core switch of the group is cisco00009, and the core switch of the subsidiary is Huawei 3526, all of which are three layers. Therefore, the two cores are connected through routes.You can perform the following two steps:1. Find an

High intelligence, high availability, and high reliability are the characteristics of multi-layer intelligent optical fiber switch. Although its technology is not very mature yet, it has been recognized by people. Cisco Systems recently announced that it will launch the CiscoMDS9100 series of multi-layer smart Optical

, routers can master the topology of the whole network. Link state broadcast is another kind of information passed between routers, it can send the information to the sender of the link state and notify the other routers. 3. Three-layer switching technology A third-tier switching device is a second layer switch with

Example: 3026 2012 5012. The value of 2nd bits is 0 ~ 4 indicates that it is a layer-2 switch. 3550. The fifth digit is 5 ~ 9 indicates that it is a layer-3 switch. LI (LitesoftwareImage) indicates that the device is a weak feature version. SI (StandardsoftwareImage) i

1,Layer-3 forwardingYesRoute information is requiredThe route selection in the forwarding process determines the final egress of the message,L3 SwitchJust put thisRoute functions are integrated into the switch ChipGo. 2,Route SelectionExistExact matchAndLongest matchTwo methods. 2.1,Exact matchThat is, the destination IP address and the route address information

, R-rip, M-mobile, B-BGPD-EIGRP, Ex-eigrp External, O-OSPF, IA-OSPF Inter areaN1-OSPF NSSA External Type 1, N2-OSPF NSSA Externaltype 2E1-OSPF external Type 1, E2-OSPF external type 2, E-EGPI-is-is, L1-is-is level-1, L2-is-is level-2, ia-is-is Inter area*-Candidate default, U-per-user static route, O-ODRP-periodic downloaded static routeGateway of last resort are not setO E2 192.168.10.0/24 [110/20] via 192.168.40.1,00:00:39, fastethernet0/0O IA 192.168.20.0/24 [110/

First, network description The PC1 is connected to the Cisco3550 F0/1 and the rate is 100M; CISCO3550 's G0/1 for export. Second, the detailed configuration process Note: This configuration: Improve the reprint of some of the incorrect configuration. Each interface supports only one policy in each direction, and one policy can be used for multiple interfaces. Therefore, the download rate limit for all PCs should be defined in the same policy (in this case, Policy-map User-down), while the d

; (enable) Set MLS include Rp_ip_address tells the switch which IP address is correct6500> (enable) Show MLS include displays a list of IP addresses for the external routing processor6500> (enable) Set MLS flow [Destination|destination-source|full] tells the MLS switch what information to cache the candidate packets6500> (enable) Show MLS entry show third-tier cache table6500> (enable) Set MLS Agingtime agi

R1 configuration:router>enRouter#conf TR1 (config) #int f0/0R1 (config-if) #ip add 192.168.10.2 255.255.255.0R1 (config-if) #no shR1 (config-if) #int F0/1R1 (config-if) #ip add 192.168.20.254 255.255.255.0R1 (config-if) #no shSW1 configuration:switch>enSwitch#conf TSwitch (config) #hostname SW1SW1 (config) #lin vty 0 15SW1 (config-line) #password CCNASW1 (Config-line) #loginSW1 (Config-line) #exitSW1 (config) #enable password 123456SW1 (config) #int vlan 1SW1 (config-if) #ip add 192.168.20.1 255

downstream interfaceLimit rate speed, calculated as follows:assuming that 2960 is the port, so the simple set speed limit is*15=720 Note: IP DHCP snooping limit rate needs to be set only if the DHCP snooping converged switch or core is enabled. If there is a large number of access layer switches under a core or aggregation switch, the speed limit setting needs

Layer-3 switches of Cisco devices practice communication between different VLANs. Layer-3 switches of Cisco devices practice communication between different VLANs. Cisco device

The comparison between a layer-3 Switch and a router is in a large LAN. This function is perfect and helpful for understanding the layer-3 Switch. However, some manufacturers' switches can also directly connect to the Internet to