Cisco Routers support many dynamic routing protocols for learning routes in a complex network topology. The routing protocols supported are the following: RIP OSPF BGP IS-IS IGRP EIGRP Each routing protocol has its own Administrative Distance (AD), which is a value representing the trustworthiness of the specific routing protocol. If a router learns a destination […]
IOS Packet Capture and Auto Upgrade
IOS Packet Capture Finally there is a feature that was missing from IOS in the past. This is the ability to easily capture packets travelling through the router, and export the captured data to PCAP format so that you can view it with third party tools (like Wireshark). This feature is useful also when doing […]
Cisco 800 Series Router Models
The Cisco Integrated Services Router (ISR) technology concept, that was initially implemented on 1800, 2800, 3800 series, is now available on the small office and small business models in the 800 series routers. The ISR technology integrates several networking and security features on one device, such as wireless networking, security firewall, virtual private networks, quality […]
Configuring PPPoE for Cisco Router 520 and for series 850 and 870
The Cisco 520 Ethernet to Ethernet router can be used as a PPPoE Client (Point to Point over Ethernet) to connect a small office to a DSL service for Internet access. Also, using Network Address Translation (NAT), you can connect multiple computers to the Internet using the same router. The same configuration applies also for […]
Cisco new Router Series ASR 1000
Cisco announced recently a new WAN Router model, the ASR 1000 series. This is a high performance integrated services device, which can be used for both Enterprise and Service Provider networks. One of the key hardware design features of this router model is its Cisco QuantumFlow processor which can support any current and future services […]
Is router uptime a measure of stability or insecurity ?
I was reading Cisco Packet Magazine the other day, and noticed a few mails from readers claiming that they have many Cisco routers in their network running continuously for more than 3 years. The continuous long uptime of a router shows stability and reliability of the specific hardware, but on the other hand it reveals also […]