Archive for the ‘Cisco’ Category

  • Enabling SNMP Traps and Informs

    Sunday, April 11th, 2010

    Problem You want the router to generate SNMP traps or informs in response to various network events. Solution The following configuration commands will enable your router to send unsolicited SNMP traps to a network management server: Router#configure terminal Enter configuration commands, one per line.  End with CNTL/Z. Router(config)#snmp-server enable traps Router(config)#snmp-server host 172.25.1.1 ORATRAP config [...]

  • Proposed IT subnetting Infrastructure

    Sunday, January 24th, 2010

    Proposed IT subnetting Infrastructure  For External communication we will use Cisco Router(Cisco ASA5520 firewall) For internal communication we will use managed switch Dell Power Connect 6248 Why use a Managed Switch? Limit broadcast traffic and increase security using VLANs Remove traffic bottlenecks using port trunking Guarantee bandwidth for time-sensitive voice and video traffic using Traffic [...]

  • Small to Medium-Sized Network Using Catalyst 3560 Switches

    Sunday, January 17th, 2010

    Figure 1-1 shows a configuration for a network of up to 500 employees. This network uses Catalyst 3560 Layer 3 switches with high-speed connections to two routers. For network reliability and load balancing, this network has HSRP enabled on the routers and on the switches. This ensures connectivity to the Internet, WAN, and mission-critical network [...]