Tag Archives: OSPF

Cumulus Linux: Devops and Python Scripting

Posted on February 12, 2015 by Humair

As I mentioned in a prior blog, Cumulus Linux on Dell Networking Switches, one benefit of running Cumulus Linux on network switches is that you can run your typical Linux commands that you’re used to running for also configuring and … Continue reading →

Posted in Cumulus Linux, Dell, Dell Force10, Labs, Network Architecture, Networking, Programming Languages, Python, Technology | Tagged backgroud process, chmod, continuous ping, Cumulus, Cumulus background process, Cumulus Linux, Cumulus Linux background process, Cumulus Linux on Dell Switches, Cumulus Linux on network switches, Cumulus Linux OS, Cumulus Linux swp interface, Cumulus Linux with OSPF, Cumulus OS, Dell Networking, Dell Networking S4810, Dell Networking S4810-ON, Dell Networking S6000, Dell Networking S6000-ON, Dell Open Networking, Dell Open Networking Switch, Dell S4810, Dell S4810-ON, Dell S6000, Dell S6000-ON, devops, e-mail, Gmail smtp server, Google's Gmail smtp server, Google's smtp server, import smtplib, linux, Linux Process ID, MIME, Open Networking, Open Networking Switch, open source, OSPF, Python, Python 2.7, Python e-mail, python e-mail attachment, python email, python email attachment, python gmail, python gmail email, Python ICMP, Python MIME, Python on Cumulus, Python on Cumulus Linux, Python script, Python script for monitoring, Python smtp, Python smtplib, Python subprocess, Quagga, Running Python Script in Background, S4810, S4810-ON, S6000, S6000_ON, Scripting on Cumulus, Scripting on Cumulus Linux, smtp server, smtplib, Spine-Leaf, Spine-Leaf Architecture, Spine-Leaf Architecture with OSPF, Spine-Leaf with OSPF, subprocess, swp, swp interface | 5 Comments

Cumulus Linux on Dell Switches: Spine-Leaf Architecture & OSPF on Unnumbered Interfaces

Posted on January 18, 2015 by Humair

In a prior blog, Cumulus Linux on Dell Networking Switches, I demonstrated how to install Cumulus Linux on a Dell S6000 switch and do some basic configuration. In this blog, I’ll demonstrate how to configure routing on Dell switches running … Continue reading →

Network Virtualization with Dell and VMware NSX [Video]

Posted on August 28, 2014 by Humair

Check out my latest Dell Networking video on Network Virtualization with Dell and VMware NSX. You can view it on the Dell VMware wiki site, the Dell YouTube channel, or see the video embedded below via direct link.

Posted in Dell, Dell EqualLogic, Dell Force10, iSCSI, Labs, Network Architecture, Network Security, Networking, Protocols, Storage, Technology, Virtualization and Cloud Computing, VMware, VMware | Tagged DCB, DCB capable storage, Dell, Dell EqualLogic, Dell EqualLogic DCB capable storage, Dell EqualLogic iSCSI storage, Dell EqualLogic PS 6110XS, Dell EqualLogic PS6110XS, Dell EqualLogic storage, Dell Force10, Dell MXL, Dell PowerEdge M1000e, Dell PowerEdge M620, Dell PowerEdge R620, Dell PowerEdge Servers, Dell S4810, Dell S6000, Dell VMware NSX, distributed firewall, distributed routing, distributed switching, DLR, EqualLogic, EqualLogic DCB capable storage, EqualLogic iSCSI storage, EqualLogic PS6110XS, ESXi, ESXi 5.5, ESXi hypervisor, firewall, Force10, Force10 Networks, hypervisor, iSCSI, iSCSI storage, L2 Bridge, L2 Gateway, Logical Network, Logical Networks, MXL, MXL Blade Switch, Network Virtualization, Network Virtualization with Dell Infrastructure and VMware NSX Reference Architecture, NSX, NSX Controller Cluster, NSX Distributed Logical Router, NSX DLR, NSX L2 Gateway, NSX Manager, NSX Perimeter Edge, NSX Services Edge, OSPF, S4810, S6000, SDN, software defined networking, vCenter, vCenter Virtual Appliance, VDS, virtual distributed switch, Virtual Network Identifier, virtualization, vmware, VMware ESXi, VMware NSX, VMware vCenter, VMware vSphere, VMware vSphere 5.5, VMware vSphere ESXi, VMware vSphere ESXi 5.5, VMware vSphere vCenter, VMware vSphere vCenter Virtual Appliance, VNI, vSphere, vSphere 5.5, vSphere vCenter, vSphere vCenter Virtual Appliance, VXLAN | Leave a comment

Dell Networking Extends Multipathing Capabilities with VLT Routing

Posted on October 12, 2013 by Humair

Dell Networking recently released enhancements to their VLT multipathing technology in FTOS 9.2 now available on S4810, S4820T, and Z9000. For a quick primer on Dell’s VLT technology read my prior blog post here. The most noticeable enhancement is the … Continue reading →

Posted in Dell, Dell Force10, Labs, Network Architecture, Networking, Protocols, Technology | Tagged Dell Force10, Dell MXL, Dell Networking, Dell S4810, Dell S4820T, Dell Z9000, FTOS, FTOS 9.2, layer 3 multipathing, layer 3 routing, layer 3 VLT, multicast routing multipathing support, multicast routing over VLT, multipathing, multipathing technology, MXL, OSPF, OSPF over VLT, peer-routing, peer-routing timeout, routed VLT, Routing over VLT, routing over VLT using OSPF, S4810, S4820T, Virtual Trunk Link, VLT, vlt domain, VLT interconnect, VLT Routing, VLT technology, vlt-peer-lag, vlt-peer-lag port-channel, VLTi, Z9000 | 3 Comments

Deploying a Dell PowerEdge M1000e Chassis with Dell Blade Servers and Dell MXL Blade Switches

Posted on June 10, 2013 by Humair

In this blog I demonstrate how to setup a Dell M1000e chassis with a Dell PowerEdge M620 server and two Dell MXL blade switches [FTOS 8.3.16.2]. The Dell M1000e chassis is part of a larger network composed of three Dell … Continue reading →

Posted in Dell, Labs, Network Architecture, Networking, Technology, Windows Server 2008 R2 | Tagged 57810S CNA, Broadcom, Broadcom 57810, Broadcom 57810S, Broadcom 57810S CNA, Broadcom CNA, Dell, Dell Force10 MXL, Dell Force10 S4810, Dell M1000e, Dell M1000e chassis, Dell M1000e PowerEdge chassis, Dell MXL, Dell MXL Blade Switch, Dell MXL switch, Dell S4810, Dell S4810 switch, Force10 MXL, Force10 Networks MXL, Force10 Networks S4810, Force10 S4810, M620 server, Open Shortest Path First, OSPF, PowerEdge, PowerEdge M620, PowerEdge M620 server, PowerEdge server, S4810 switch, server, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 R2 Enterprise | 2 Comments

Multi-Area OSPF in a Mixed Cisco and Dell Force10 Environment

Posted on November 20, 2012 by Humair

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 | Leave a comment

Multi-Area OSPF – Redundancy, Route Summarization, and LSA Filtering

Posted on July 9, 2012 by Humair

In this lab, all routers except for R4 and R5 are Cisco 3725 routers [IOS 12.4(15)T10]. Routers R4 and R5 are Cisco 7200 routers [IOS 12.4(24)T]. Below is the network diagram for this lab.

Posted in Cisco, Labs, Networking, Protocols, Technology | Tagged ABR, Area Border Router, Cisco, Cisco 3725, Cisco 3725 router, Cisco 7200, Cisco 7200 router, Multi-Area OSPF, networking, Open Shortest Path First, OSPF, OSPF ABR, OSPF Area Border Router, OSPF redundancy, OSPF summary route, redundancy, summary route | 1 Comment

Configuring OSPF with Multiple Areas

Posted on June 1, 2012 by Humair

In this lab, I use three Cisco 3725 routers [IOS 12.4(15)T10] to demonstrate how to setup OSPF with multiple Areas. Below is the network diagram for this lab.

Posted in Cisco, Labs, Networking, Protocols, Technology, Troubleshooting | Tagged Area, Areas, Cisco, Cisco 3725, Cisco 3725 router, Multiple Areas, Multiple OSPF Areas, OSPF, OSPF area, OSPF Areas, router | Leave a comment

EIGRP and OSPF Redistribution on Cisco Routers

Posted on February 7, 2012 by Humair

This was a quick lab I threw together which I thought was pretty cool. In this lab I use five Cisco 3725 routers [IOS 12.4(15)T10] in which I have two groups of routers each on a different subnet and running … Continue reading →

Posted in Cisco, Labs, Networking, Protocols, Technology | Tagged Cisco, Cisco 3725, Cisco 3725 router, cisco router, EIGRP and OSPF Redistribution, EIGRP Redistribution, EIRGP, OSPF, Redistribution, router | Leave a comment

OSPF Explained and Useful Troubleshooting Commands

Posted on January 4, 2012 by Humair

Open Shortest Path First (OSPF) is an open standard link-state routing protocol that supports multiple equal-cost routes to the same destination (four by default). OSPF constructs a shortest path tree and then updates the routing table with the best paths. … Continue reading →

Posted in Cisco, Labs, Networking, Protocols, Technology, Troubleshooting | Tagged ABRs, adjacency, area 0, Area Border Routers, AS, ASBR, Autonomous System, Autonomous System Border Router, backbone area, Backup Designated Router, BDR, Cisco, Cisco 2126XM, Cisco 2126XM router, Cisco IOS, cisco router, cost, Designated Router, Hello packets, Link State Advertisement, LSA, neighbor, Neighbors, Open Shortest Path First, OSPF, OSPF Adjacencies, OSPF area, OSPF Backup Designated Router, OSPF BDR, ospf cost, ospf database, OSPF Designated Router, OSPF Hello Packets, ospf neighbor, OSPF Neighbors, OSPF process, OSPF Router ID, ospf troubleshooting, router, Router ID, Shortest Path First, shortest path tree, SPF | 3 Comments