Search Results for: spanning tree

Networking: Spanning Tree Protocol Basics [Video]

Posted on April 15, 2012 by Humair

This video covers some of the basics of how Spanning Tree Protocol (STP) works in a network. To learn more about Spanning Tree Protocol see some of my prior blogs on STP.

Posted in Networking, Protocols, Technology | Tagged Loop Avoidance, loop prevention, network loops, Spanning Tree Protocol, STP | 1 Comment

Why the Overall User Experience Extends Beyond the Application

Posted on October 18, 2017 by Humair

Solving problems is why I initially started my career as a software developer; the thought of solving a problem by directly developing/coding something that thousands of people would use was extremely appealing to me; there was also a lot of … Continue reading →

Posted in Applications, Business, Network Architecture, Networking, Technology, Technology, Virtualization and Cloud Computing, VMware, VMware, VMworld 2017 | Tagged Active-Active, Active-Active Application, Active-Active F5 Networks, Active-Active NSX, Application Continuity, Application Reliability, BIG-IP F5 DNS, Disaster Recovery, DR, F5, F5 BIG-IP DNS, F5 GTM, F5 Networks, F5 Networks BIG-IP DNS, F5 Networks GTM, GSLB, GTM, humair, Humair Ahmed, J2EE, Java, Reliability, User Experience, VMware NSX, VMworld, VMworld 2017, VXLAN | Leave a comment

EMEA DEF HOL Labs – Get Hands-on Experience with Dell Networking, Servers, and Storage

Posted on April 15, 2014 by Humair

EMEA Dell Enterprise Forum (DEF) kicked off this week in Frankfurt, Germany. Great venue with tons of information and training for Dell customers and partners. Make sure to stop by the Hands-on labs in the Skyloft. I will be there … Continue reading →

Posted in Dell, Dell Compellent, Dell Force10, EMEA Dell Enterprise Forum 2014, Fibre Channel, Networking, Storage, Tech Events, Technology | Tagged DEF, Dell Active Fabric Manager, Dell Enterprise Forum, Dell Enterprise Forum 2014, Dell FC Flex IO Module, Dell Fc Flex IOM, Dell Force10, Dell MXL, Dell MXL Blade Switch, Dell MXL Blade Switch with FC Flex IO Module, Dell MXL Blade Switch with FC Flex IOM, Dell N-Series, Dell Networking, Dell S5000, Dell S6000, Dell Servers, Dell Storage, EMEA DEF, EMEA DEF 2014, EMEA DEF Frankfurt Germany, EMEA Dell Enterprise Forum, EMEA Dell Enterprise Forum 2014, Enterprise Forum 2014, FC Flex IO Module, FC Flex IOM, Frankfurt Gerany, mlag, Multi-chassis Link Aggregation, NPG, NPIV Proxy Gateway, VRF-lite | Leave a comment

Automating VLAN Configuration on Dell FTOS Switches via GVRP

Posted on February 22, 2014 by Humair

GARP VLAN Registration Protocol (GVRP) is a standards-based protocol defined in the IEEE 802.1Q specification that provides for automatic VLAN configuration on switches. The Generic Attribute Registration Protocol (GARP) is used by switches supporting GVRP to register/de-register attribute values such … Continue reading →

Posted in Dell, Dell Force10, Labs, Networking, Protocols, Technology, Troubleshooting | Tagged 802.1q, automatic VLAN configuration, Cisco Virtual Trunnk Protocol, Cisco VTP, Cisco VTP transparent mode, Dell, Dell Force10 S50, Dell Force10 S50N, Dell Force10 S60, Dell Networking S60, Dell S50, Dell S50N, Dell S60, dynamic VLAN, dynamic VLAN creation, dynamic VLANs, Force10 S50, Force10 S50N, Force10 S60, FTOS, GARP, GARP VLAN Registration Protocol, Generic Attribute Registration Protocol, GVRP, GVRP and MSTP, GVRP and PVST, GVRP and STP, GVRP and VTP, GVRP Join, GVRP Leave, GVRP LeaveAll, GVRP or VTP, GVRP troubleshoot, GVRP troubleshooting, GVRP vs VTP, IEEE 802.1Q, protocol gvrp, S50, S50N, S60, STP, Transparent Mode, troubleshoot GVRP, troubleshooting GVRP, Virtual Trunnk Protocol, vlan, VLAN de-registration, VLAN registration, VTP, VTP transparent mode | Leave a comment

LACP and Trunking Between Brocade FOS and Dell FTOS Switches

Posted on January 18, 2014 by Humair

In this short lab I’ll demonstrate creating a LACP LAG and trunking between Brocade switches running FOS and Dell switches running FTOS. I utilize two Brocade 8000 switches [FOS 6.3], one Dell S60 switch [FTOS 8.3.3.8], and one Dell PowerEdge … Continue reading →

Posted in Brocade, Dell, Dell Force10, Labs, Networking, Protocols, Technology | Tagged 802.1q, Brocade, Brocade 8000, Brocade 8000 Converged Switch, Brocade 8000 FCoE Switch, Brocade FOS, Brocade-proprietary LAG, Dell, Dell Force10 FTOS, Dell Force10 S5000, Dell Force10 S60, Dell FTOS, Dell PowerEdge 2950, Dell PowerEdge 2950 server, Dell S5000, Dell S5000 converged switch, Dell S5000 FCoE switch, Dell S60, Dynamic LAG, Ethernet, FC, Fibre Channel, Force10 FTOS, Force10 S5000, Force10 S60, LACP, LACP LAG, LAG, port channel, PowerEdge 2950, PowerEdge 2950 server, QLE8242, QLE8242 CNA, QLogic 8242, QLogic 8242 CNA, QLogic QLE8242, QLogic QLE8242 CNA, S5000, S60, Static LAG, Trunking, Trunking between Brocade and Dell, Trunking between Brocade and Dell Force10, Trunking between Brocade and Force10, vlans | Leave a comment

Understanding Cisco Nexus 2000 Series Fabric Extenders

Posted on August 13, 2013 by Humair

Cisco Nexus 2000 Series Fabric Extenders (FEX) behave and can be considered as remote line cards for Cisco Nexus switches. The fabric extender acts as an extension to the parent Cisco Nexus switch fabric; the fabric extender and the parent … Continue reading →

Posted in Cisco, Labs, Network Architecture, Networking, Technology | Tagged Cisco, Cisco distributed modular system, Cisco FEX architecture, Cisco Nexus, Cisco Nexus 2000, Cisco Nexus 2000 Fabric Extender, Cisco Nexus 2000 Fabric Extenders, Cisco Nexus 2000 FEX, Cisco Nexus 2000 Series Fabric Extenders, Cisco Nexus 2248PQ, Cisco Nexus 2248PQ Fabric Extender, Cisco Nexus 2248PQ FEX, Cisco Nexus 5548UP, Cisco Nexus Fabric Extender, Cisco Nexus FEX, Cisco Nexus switch, distributed modular system, east-west traffic, edge ports, etherchannel, EtherChannel Fabric Interface Connection, EtherChannel interface, Fabric Extender, FEX, FEX architecture, fex associate, Nexus 2248PQ, Nexus 2248PQ Fabric Extender, Nexus 2248PQ FEX, Nexus 5548UP, spanning tree edge ports, Static Pinning Fabric Interface Connection, switchport mode fex-fabric | 3 Comments

Connecting Dell PowerEdge M I/O Aggregator with Dell Force10 S4810 and Cisco Nexus 5548UP

Posted on February 11, 2013 by Humair

The Dell PowerEdge M I//O Aggregator is a slick blade switch that plugs into the Dell PowerEdge M1000e chassis and requires barely any configuration/networking knowledge. Think of it as an advanced layer 2 switch that provides expandable uplink connectivity. The … Continue reading →

Posted in Cisco, Dell, Dell Force10, Force10 Networks, Labs, Network Architecture, Networking, Technology | Tagged 40 GbE, 5548 switch, 5548UP switch, Blade Chassis, blade switch, Chassis Management Controller, Cisco, Cisco Nexus, Cisco Nexus 5548, Cisco Nexus 5548UP, CMC, Dell, Dell Blade Server, Dell Blade Servers, Dell Force10, Dell Force10 S4810, Dell Force10 S4810 switch, Dell I/O Aggregator, Dell M1000e, Dell PowerEdge, Dell PowerEdge M I/O Aggregator, Dell PowerEdge M1000e, Dell S4810, Dell S4810 switch, Dell Server Blade Chassis, Force10, Force10 Networks, Force10 Networks S4810, Force10 Networks S4810 switch, Force10 S4810, Force10 S4810 switch, I/O Aggregator, I/O Aggregator blade switch, M1000e, Nexus 5548, Nexus 5548UP, Nexus 5548UP switch, PowerEdge, PowerEdge I/O Aggregator, PowerEdge I/O Aggregator blade switch, PowerEdge M1000e, S4810 switch, Server Blade Chassis, Twinax, Twinax breakout cable, Twinax breakout cables | 2 Comments

Distributed Core Network Architecture

Posted on January 18, 2013 by Humair

There is no doubt you have probably heard by now the importance of supporting ‘east-west’ traffic flow in large data center networks. So why is this and what does it mean? And when Gartner claims that 80 percent of data … Continue reading →

Posted in Dell Force10, Force10 Networks, Hadoop, Network Architecture, Networking, Servers, Technology, Virtualization and Cloud Computing | Tagged 'east-west' traffic flow, 10 GbE, 10 gig, 3-Tier, 3-Tier Network Architecture, 40 GbE, 40 gig, Data Center, Dell, Dell Force10, Dell Force10 S4810, Dell Force10 Z9000, Dell S4810, Dell Z9000, distributed cloud computing, distributed cloud computing platform, distributed cloud computing platforms, distributed core architecture, Distributed Core Network Architecture, east-west, east-west traffic, Facebook, Force10, Force10 Networks, Force10 Networks S4810, Force10 Networks Z9000, Force10 S4810, Force10 Z9000, Hadoop, server-to-server, server-to-server traffic, server-to-server traffic flow, Spanning Tree Protocol, spine and leaf, spine and leaf architecture, spine and leaf network, STP, Traditional 3-Tier Network Architecture, Z9000 | 3 Comments

Dell Force10 – Layer 2 Multipathing via Virtual Link Trunking (VLT)

Posted on December 18, 2012 by Humair

In this blog I use one Dell Force10 S50N [FTOS 8.4.2.7] and three Dell Force10 S4810 switches [FTOS 8.3.12.1] to demonstrate Dell Force10’s layer 2 mulipathing technology called Virtual Link Trunking (VLT). With VLT, you can create a LAG for … Continue reading →

Posted in Dell Force10, Force10 Networks, Labs, Networking, Technology | Tagged 10 gig, 10GbE, 40 gig, 40GbE, bare metal provisioning, BMP, Brocade, Cisco, Dell, Dell Force10, Dell Force10 S4810, Dell Force10 S50N, Force10 Networks, Force10 S4810, Force10 S50N, FTOS, Juniper, LACP, Link Aggregation Control Protocol, MCT, MEC, mulipathing, Multi-Chassis Trunking, Multichassis EtherChannel, non-blocking, reload-type, S4810, S50N, Shortest Path Bridging, Spanning Tree Protocol, SPB, stack port, stack-group, STP, Transparent Interconnection of Lots of Links, TRILL, Virtual Chassis, Virtual Link Trunk, Virtual Link Trunking, Virtual Port Channel, VLT, VLT interconnect, VLTi, vPC | 11 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