Category Archives: Technology
Connecting Dell PowerEdge M I/O Aggregator with Dell Force10 S4810 and Cisco Nexus 5548UP
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
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Understanding and Implementing Flow Control on Dell Force10 Switches
Ethernet flow control allows for a receiving node to temporarily stop the transmission of data from the sending node. As defined by IEEE 802.3x this is accomplished via the PAUSE frame.
Posted in Dell Force10, Force10 Networks, Labs, Networking, Servers, Technology
Tagged 01-80-C2-00-00-01, 01:80:C2:00:00:01, 802.1Qbb, 802.3x, 802.3x flow control, Class of Service, converged network, converged networks, CoS, DCB, Dell, Dell Force10, Dell Force10 S50N, Dell S50N, Ethernet Pause Frame, Flow Control, Force10, Force10 Networks, Force10 S50N, IEEE 802.1Qbb, IEEE 802.3x flow control, network congestion, pause, PAUSE frame, PAUSE frame capture, PAUSE frame propogation, pause traffic, PFC, priority-based flow control, propogate PAUSE frame, QoS, Quality of Service, wireshark, Wireshark PAUSE frame, Wireshark PAUSE frame capture
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Distributed Core Network Architecture
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
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XenServer, Hyper-V, and ESXi – Architecture, API, and Coding
Below is a link to the slide deck for a presentation I gave to some friends/colleagues for a Berkeley Virtualization and Cloud Computing certification course I took in early 2012. For my final project I did a XenServer, Hyper-V, and … Continue reading
Posted in Citrix, Java, Microsoft, Networking, Personal Presentations, PowerShell, Programming Languages, Python, Tech Events, Technology, Virtualization and Cloud Computing, VMware
Tagged ESXi, humair, Humair Ahmed, Java, networking, PowerShell, Python, Tkinter, VI API, virtualization, vmware, vSphere, Xen, XenServer, XML-RPC
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Multi-Area OSPF in a Mixed Cisco and Dell Force10 Environment
In this lab I use one Cisco 2621XM [IOS 12.4(2)T], one Cisco 2621 [IOS 12.3(18)], one Cisco 3660 [IOS 12.1(1)T], one Cisco 3640 [IOS 12.1(2)T], one Cisco 3550-24PWR-SMI [IOS 12.2(44)SE6], one Dell Force10 S60 [FTOS 8.3.3.7], and one Dell Force10 … Continue reading
Posted in Cisco, Dell Force10, Force10 Networks, Labs, Networking, Protocols, Technology
Tagged 2621, 2621XM, 3550-24PWR-SMI, 3640, 3660, ABR, Area Border Router, Area Border Routers, Cisco, Cisco 2621, Cisco 2621XM, Cisco 3550-24PWR-SMI, Cisco 3640, Cisco 3660, Dell, Dell Force10, Dell Force10 S50N, Dell Force10 S60, Force10, Force10 Networks, Force10 S50N, Force10 S60, multiarea ospf, Open Shortest Path First, OSPF, ospf neighbor, OSPF Neighbors, S50N, S60, Type 3 LSAs
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Blocking Hackers From Accessing Your Switch via Telnet/SSH
It’s amazing how much rattling at the doors and attempted intrusions companies become accustomed to seeing on their networks. Here I show a simple way to block telnet/SSH access to your switch. First, you should never use telnet to manage … Continue reading
Posted in Dell Force10, Force10 Networks, Hacks, Labs, Network Security, Networking, Technology
Tagged access list, access lists, access-llists, block ssh, block telnet, block VTY access, Dell, Dell Force10, extended access list, extended access-lists, Force10 Networks, FTOS, hack, hacker, named access list, named access-lists, port 22, port 23, S0N, SSH, tcp, telnet, VTY, VTY access, VTY line, VTY lines
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Gratuitous ARP and Basics of Connecting a Cisco IOS Switch with a Cisco CatOS Switch
Some of you may have an old Cisco Catalyst switch laying around that you may want to put to use. CatOS is the old Cisco operating system for Catalyst switches that predates IOS; it can still be found on some … Continue reading
Posted in Cisco, Labs, Networking, Protocols, Technology
Tagged 1000Base-SX, 1000Base-SX GBI, CAM, Catalyst 3548-XL, Catalyst 3550, Catalyst 4003, Catalyst C4000, Catalyst C4003, CatOS, Cisco, Cisco 1000Base-SX, Cisco 1000Base-SX GBIC, Cisco Catalyst, Cisco Catalyst 3548-XL, Cisco Catalyst 3550, Cisco Catalyst 4000, Cisco Catalyst 4003, Cisco Catalyst C4003, Cisco CatOS, Cisco GBIC, Cisco IOS, Cisco WS-X4012, Cisco WS-X4232-GB-RJ, Cisco WS-X4232-L3, delete configuration, Dell, Dell EqualLogic, Dell EqualLogic storage, EqualLogic, erase configuration, GBIC, Gratuitous ARP, ios, IXIA, MAC address, MAC address table, reset configuration, Supervisor Engine, Supervisor Engine 1, Supervisor Engine 2, Supervisor Engine I, Supervisor Engine II, Windows PC, wireshark, WS-C3548-XL-EN, WS-X4012, WS-X4232-GB-RJ, WS-X4232-L3
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Humair’s Blog – Finally Removed the Registration Requirement for Leaving Comments
Apologies for getting this done so late. I have had many requests in the past to remove the registration requirement for leaving comments. I get a ton of spam mail and spam comments, and that was the main reason for … Continue reading →