Category Archives: Protocols

Cisco VLAN Trunking Protocol (VTP)

Posted on November 23, 2011 by Humair

VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that reduces administration in a switched network. When you configure a new VLAN on one VTP server, the VLAN is distributed through all switches in the domain. This prevents you from … Continue reading →

Posted in Cisco, Labs, Networking, Protocols, Technology | Tagged Cisco, Cisco 2960, Cisco 2960 siwtch, Client Mode, Server Mode, Transparent Mode, vlan, VLAN Trunk Protocol, VLAN Trunking Protocol, VTP, VTP client, VTP server | Leave a comment

Address Resolution Protocol (ARP)

Posted on November 20, 2011 by Humair

Address Resolution Protocol (ARP) is used by IP devices to locate the hardware addresses of other devices on the local network. RFC 826 introduced ARP as a method for IP devices to locate other IP devices on the same local … Continue reading →

Posted in Networking, Protocols, Technology | Tagged 0806, Address Resolution Protocol, ARP, ARP request, ARP response, broadcast ARP, protocol ID 0806, RFC 1122, RFC 826, unicast ARP | 1 Comment

Load Balancing with EIGRP

Posted on September 14, 2011 by Humair

RIP, RIPv2, IGRP, EIGRP and OSPF are all routing protocols that support equal cost load balancing but IGRP and EIGRP can also support unequal cost load balancing. However, unlike IGRP, EIGRP supports VLSM (Variable Length Subnet Masking). Below I use … Continue reading →

Posted in Cisco, Labs, Networking, Protocols | Tagged Cisco, Cisco 3560G, Cisco 3560G router, EIGRP, eigrp load balancing, equal cost load balancing, load balancing, router, unequal cost load balancing | 1 Comment

Setup VRRP with Force10 Switches

Posted on July 12, 2011 by Humair

In this lab I setup Force10 switches with Virtual Router Redundancy Protocol (VRRP). VRRP is a redundancy protocol used to eliminate a single point of failure between a gateway and its respective hosts within the same subnet. I use three … Continue reading →

Posted in Force10 Networks, Labs, Networking, Protocols | Tagged E1200, Force10, Force10 E1200, Force10 Networks, Force10 S55, Force10 S60, FTOS, gateway, gateway redundancy, redundancy protoco, S55, S60, virtual address, virtual IP, Virtual Router Redundancy Protocol, VRRP, VRRP group | 2 Comments

Setting up Cisco EtherChannels – Static, PAgP, and LACP

Posted on June 2, 2011 by Humair

In this lab I used a Cisco Catalyst WS-C3750G-24TS switch [IOS 12.2(25)SEE3] and a Cisco Catalyst WS-C3560G-24TS switch [IOS 12.2(40)SE]. I also physically connected GigabitEthernet 1/0/17 on the Catalyst 3750G to GigabitEthernet 0/17 on the Catalyst 3560G; I did the … Continue reading →

Posted in Cisco, Labs, Networking, Protocols | Tagged Cisco, Cisco Catalyst, Cisco Catalyst WS-C3560G-24TS, Cisco Catalyst WS-C3750G-24TS, etherchannel, LACP, PAgP, port channel, static etherchannel | 1 Comment

Creating a Link Aggregation Group (LAG) in FTOS

Posted on May 9, 2011 by Humair

This lab demonstrates how to create a Link Aggregation Group (LAG) in FTOS on Force10 switches. A LAG in Force10’s FTOS is called a port channel and in Cisco’s IOS is called an EtherChannel. As described by IEEE 802.3ad, LAG … Continue reading →

Posted in Force10 Networks, Labs, Networking, Protocols, Technology | Tagged dynamic port channel, etherchannel, Force10, Force10 Networks, Force10 S25P, Force10 S50V, FTOS, IEEE 802.3ad, LACP, LAG, Link Aggregation Control Protocol, Link Aggregation Group, port channel, router, S25P, S50V, static port channel, switch | 5 Comments

Setup OSPF on Force10 Switches

Posted on April 27, 2011 by Humair

For this lab, I use a Force10 E1200 chassis [FTOS 8.3.1.1] and a Force10 S60 switch [FTOS 8.3.3.4]. The objective is to setup a simple OSPF network. Loopback addresses are used to setup test networks.

Posted in Force10 Networks, Labs, Networking, Protocols, Technology | Tagged E1200, Force10, Force10 Networks, Force10 S60, FTOS, OSPF, Route Processing Module, router, RPM, S60, Sorce10 E1200, switch | 1 Comment

Discovery Protocols on Cisco, HP, and Force10 Switches/Routers – CDP and LLDP

Posted on April 23, 2011 by Humair

The Cisco Discovery Protocol (CDP) is a Cisco proprietary Data Link Layer network protocol used to share information about other directly connected Cisco equipment. CDP can also be used in place of dynamic routing protocols in simple networks. Cisco devices … Continue reading →

Posted in Cisco, Force10 Networks, HP, Networking, Protocols | Tagged 2621XM, CDP, Cisco, Cisco 2621XM, Cisco Discovery Protocol, Force10, Force10 Networks, Force10 S60, HP, HP Procurve, IEEE 802.1AB, Link Layer Discovery Protocol, LLDP, Procurve, S60 | 2 Comments

IPv6 Presentation at Sun Microsystems

Posted on February 23, 2009 by Humair

On January 31st, 2009, at Sun Microsystems, I gave a presentation on IPv6 and the Hurricane Electric (HE) Tunnelbroker. The speech was given during the SupperHappyDevHouse 30 event and you can download the presentation slides here. The event attracted a … Continue reading →

Posted in Personal Presentations, Protocols, Tech Events, Technology | Tagged Hurricane Electric, IPv4, IPv6, SHDH, SHDH 30, SHDH30, Sun Microsystems, SuperHappyDevHouse, SuperHappyDevHouse 30, Tunnelbroker | Leave a comment