ccna c'est quoi

ccna c'est quoi.PortStatus :Secure-up Violation Mode :Restrict Aging Time :0 minsAging Type :AbsoluteSecureStatic Address Aging :Disabled Maximum MAC Addresses :1 TotalMACAddresses :1Configured MAC Addresses :0 Sticky MAC Addresses :1 Port Sticky 1 MAC Address Last Source Address:Vian :0050.56e9.114d:l Security Violation Count :0Sl#show running-config interface fastEthernet 0/12 interface FastEthemetO/12switchport modeaccess switchport port-security switchport port-security violation restrict switchport port-security mac-address stickyswitchport port-security mac-address sticky 0050.56e9.114dYou can find that the switch SI automatically sticks the MAC address of computer PC2 to this port, which is equivalent to executing the switchportport-security mac-address 0050.56e9.114d command, so that only computers with MAC address 0050.56e9.114d can be accessed on this port in the future. write command to save the configuration fileChapter 8 VLANs, Trunk, and Inter-VLAN RoutingVLANs and Trunk are the most basic and core network technologies for enterprise LANs and are widely used in the deployment and implementation of LANs. VLAN technology makes it easy to control the size of broadcast domains. With VLANs, cascading links between switches require Trunk technology to ensure that the link can carry data from multiple VLANs at the same time. Administrators can manually configure trunking on the links between switches, or they can have the switches automatically negotiate. A VLAN is a broadcast domain or a separate subnet, so the routing function is used to enable communication between hosts in different VLANs. This chapter introduces the concept, principle, configuration and implementation of VLAN and Trunk technology, and then introduces the implementation of inter-VLAN routing with single-arm routing.