cisco switches and routers models

. If such ICMP messages are repeatedly sent, the device may become inaccessible to the network. The IETF document also outlines another DoS attack method that uses the path's largest transmission unit to discover PMTUD. PMTUD is a mechanism of ICMP to process error messages.Cisco indicates that only routers and other devices running IOS with PMTUD enabled are under this attack. It indicates that ICMP "hardware error" message attacks are invalid for

. If such ICMP messages are repeatedly sent, the device may become inaccessible to the network. The IETF document also outlines another DoS attack method that uses the path's largest transmission unit to discover PMTUD. PMTUD is a mechanism of ICMP to process error messages.Cisco indicates that only routers and other devices running IOS with PMTUD enabled are under this attack. It indicates that ICMP "hardware error" message attacks are invalid for

(config) #inSwitch (config) #interface vlan 1Switch (config-if) #ip addSwitch (config-if) #ip address 192.168.1.1 255.255.255.0Switch (config-if) #no sh%link-5-changed:interface Vlan1, CHANGED state-to-up%lineproto-5-updown:line protocol on Interface Vlan1, changedSwitch (config-if) #exiSwitch (config) #enSwitch (config) #enable PassSwitch (config) #enable password CiscoSwitch (config) #line vty 0 4Switch (Config-line) #passSwitch (config-line) #password Cisco1Switch (Config-line) #loginSwitch

CISCO PT Simulation Experiment (15) loopback Telnet configuration for routersExperimental Purpose :Mastering the features and functions of router loopback interfaceMaster the configuration of the Loopback interface to achieve Telnet login to the routerMastering the basic configuration of RIP dynamic Routing and default routingExperimental Background : as the network environment of the company is becoming more and more complex, as a network administrat

With the rapid development of the IT industry, Cisco routers are widely used in all walks of life. This article will start with the basic configuration and briefly introduce the configuration method of Cisco routers. 　　 1. Configure the Ethernet port # conf t 　　 Configure the router from the terminal (

used in the route selection protocol. Router rip activates the RIP Protocol Network + direct connection CIDR Block publish direct connection CIDR Block Interface lookback 0 activation logic interface Passive-interface + interface Type + interface number configuration interface is passive mode Debug ip + protocol dynamic view of route update information Undebug all disable all DEBUG information Activate the network routing protocol of the route