Author Archives: Farzand Ali

Cisco First Hop Redundancy Protocols: HSRP, VRRP, GLBP

Overview PDF Document When designing a network, one of the common things to focus on after simple access is how the network will deal with failure. Part of this process is trying to build as much redundancy into the design as financially possible, while also maintaining performance and manageability. From the client’s perspective, the firstContinue reading “Cisco First Hop Redundancy Protocols: HSRP, VRRP, GLBP”

Access Lists on Switches

Access Lists on Switches PDF Document The switch supports the following four types of ACLs for traffic filtering: Router ACL Port ACL VLAN ACL MAC ACL Router ACL As the name implies, Router ACLs are similar to the IOS ACL discussed in Chapter 2, “Access Control,” and can be used to filter network traffic onContinue reading “Access Lists on Switches”

Load Balancers (Kemp/F5)

KEMP Technologies, Inc. was founded in 2000 in Bethpage, New York and operates in the application delivery industry.[1] The company creates load balancing products which balance user traffic between multiple servers in an organization, business or managed service provider’s infrastructure KEMP’s load balancers are primarily used by small-to-medium businesses,[4] including law firms[5] and banks.[6] The product line supports Microsoft services such as Exchange 2010[7] and Lync 2010.[8] The company also offers geographic[9] and virtualized[10] load balancing. Kemp’sContinue reading “Load Balancers (Kemp/F5)”

Extended Ping, extended tracert/Ping, tracert, netstat, nslookup, ipconfig

Specifying a different source to generate the pings R1#ping 10.1.1.1 source 192.168.1.2 Router A>enable Router A#ping Protocol [ip]: Target IP address: 192.168.40.1 !— The address to ping. Repeat count [5]: Datagram size [100]: Timeout in seconds [2]: Extended commands [n]: y Source address or interface: 172.16.23.2 !—Ping packets are sourced from this address. Type ofContinue reading “Extended Ping, extended tracert/Ping, tracert, netstat, nslookup, ipconfig”

module/slot/port –

Introduction This document explains the interface numbering scheme used in Cisco 1800, Cisco 2800 and Cisco 3800 Series Routers. It also includes line numbering associated with async interfaces. Prerequisites Requirements There are no specific requirements for this document. Components Used The information in this document is based on these hardware versions: Cisco 1800 Series RoutersContinue reading “module/slot/port –”

ISDN2 and ISDN30

http://networkengineer.me/2014/03/03/e1e-carrier-isdn-pri-integrated-services-digital-network-private-rate-interface/ Integrated Services for Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network The key feature of ISDN is that it integrates speech and data on the same lines, adding features that were not available in the classic telephoneContinue reading “ISDN2 and ISDN30”