Tag Archives: switch

Cisco vPC with Dell S4810 at ToR

Posted on September 21, 2013 by Humair

Cisco’s vPC technology is similar to Dell’s VLT; it enables an access/leaf switch or server to have single LAG connecting up to two separate switches. This allows for an non-blocking, multipathing scenario. You can read more about Dell’s VLT technology … Continue reading →

Posted in Cisco, Dell, Dell Force10, Labs, Network Architecture, Networking, Technology | Tagged 5548, Cisco, Cisco 5548UP, Cisco Nexus, Cisco Nexus 5548UP, Dell, Dell Force10 S4810, Dell S4810, Force10 S4810, mlag, Nexus, Nexus 5548UP, Nexus switch, port channel, S4810, S4810 switch, switch, Virtual Port Channel, vPC | 3 Comments

Configuring PVST+ on Cisco Switches

Posted on February 1, 2012 by Humair

Per VLAN Spanning Tree Plus (PVST+) is a flavor of Spanning Tree Protocol (see prior blog, Default STP Behavior on Cisco Switches) which maintains a spanning tree instance for each VLAN in the network. This means certain VLAN trunks (using … Continue reading →

Posted in Cisco, Labs, Networking, Protocols, Technology | Tagged avoid loop, Cisco, Cisco 3560, Cisco 3560 switch, Cisco switch, dot1q, loop, Per VLAN Spanning Tree Plus, prevent loop, PVST+, Spanning Tree Protocol, STP, switch, vlan | 6 Comments

Setting-up DHCP on Cisco Routers

Posted on December 11, 2011 by Humair

The Dynamic Host Configuration Protocol (DHCP) provides the capability to automatically allocate reusable network addresses and configuration options to hosts.

Posted in Cisco, Labs, Networking, Protocols, Technology | Tagged BOOTP, Cisco, Cisco 2126XM, Cisco 2126XM router, cisco dhcp configuration, cisco router, cisco setup dhcp, Cisco switch, Cisco WS-C2960-24TT, Cisco WS-C2960-24TT switch, dhcp, dhcp configuration, Dynamic Host Configuration Protocol, router, switch | 1 Comment

Recover from a Forgotten Console Password on Dell Force10 E-Series Switches

Posted on November 18, 2011 by Humair

In this lab I will use a Dell Force10 E600i chassis [FTOS 8.3.1.1] to demonstrate how to recover if you forget your console password. The first thing to do to prepare for this lab is to log on through the … Continue reading →

Posted in Dell Force10, Force10 Networks, Networking, Technology | Tagged BOOT_ADMIN mode, console password, Dell, Dell Force10, Dell Force10 E600i, E-Series, E600, E600i, enable password, Force10 Networks, forgot console password, forgot enable password, forgot password, FTOS, password recovery, Recover from a Forgotten Console Password on Dell Force10 E-Series Switches, router, set console password, switch | 1 Comment

Cisco Port Security with Dynamic MAC Address Learning

Posted on May 31, 2011 by Humair

In this lab I used a Cisco Catalyst WS-C3560G-24TS switch [IOS Version 12.2(40)SE]. Using Cisco Port Security it is possible to associate a static MAC address to a physical port on a switch. This only allows one host with that … Continue reading →

Posted in Cisco, Labs, Networking, Technology | Tagged Cisco, Cisco Catalyst 3560 switch, Cisco Catalyst WS-C3560G-24TS, Cisco Port Security, Cisco Port Security with Dynamic MAC Address Learning, Dynamic Port Security, MAC address, Port Security, router, switch, switchport port-security, switchport port-security violation | 4 Comments

Setup SSH Access on Cisco Switches

Posted on May 20, 2011 by Humair

The Cisco Catalyst WS-C3750G-24TS [IOS 12.2(25)SEE3] switch provides both layer 2 and layer 3 functionality. In this lab I’m going to demonstrate how to setup SSH access to the switch. The first thing I do is set a hostname and … Continue reading →

Posted in Cisco, Labs, Networking, Technology | Tagged Catalyst, Cisco, Cisco Catalyst 3570, Cisco Catalyst WS-C3750G-24TS, default route, router, SSH, switch | Leave a comment

Setup Telnet Access on Force10 Switches

Posted on May 14, 2011 by Humair

I am going to use a Force10 S60 switch [FTOS 8.3.3.4] to demonstrate how to setup telnet access. To setup telnet access you first need to set an IP address on either a data port or a managment port so … Continue reading →

Posted in Force10 Networks, Labs, Networking, Technology | Tagged Force10, Force10 Networks, mamangement port, managementethernet, router, S60, switch, telnet | Leave a 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

How Perl/Python Scripts on Force10 S60 Switches Can Access the Internet

Posted on May 9, 2011 by Humair

Let’s say you have a Force10 S60 switch [FTOS 8.3.3.4] hooked-up at a datacenter that currently has a console connection connected to a management switch that provides external Internet access. The natted IP address is 10.0.8.10/24 and the external IP … Continue reading →

Posted in Force10 Networks, Labs, Networking, Perl, Programming Languages, Python, Technology | Tagged console, default route, external Internet access, Force10, Force10 Networks, management interface, management port, management route, management switch, nat, natted IP, perl, Python, router, S60, S60 Switch, switch | Leave a comment

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