Archive for the ‘Protocols’ Category

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

Sunday, January 18th, 2015

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 Cumulus Linux. The example covered demonstrates a Spine-Leaf architecture with OSPF on unnumbered interfaces. In this example 2 x Dell S6000-ON and 2 x Dell S4810-ON switches [Cumulus Linux 2.1.1] are utilized. The lab setup is depicted by the network diagram below. (more…)

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Dell VRF-lite & VMware NSX: Multitenancy Across Physical & Logical Networks

Saturday, December 20th, 2014

Please checkout the white paper Dell Networking: Multitenancy Across Physical and Logical Environments with VRF-lite and VMware NSX. In the white paper I discuss use cases and how NVO and VRF-lite can be used together to deploy a consistent multitenant framework across logical and physical networks. In this short blog, I expand on the concept I presented in a prior blog, Multitenancy on Dell Networking Switches via VRF-lite, of how NVO and VRF-lite together can be used to deploy a consistent multitenant framework across logical and physical networks. (more…)

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Dell Networking and VMware NSX: Bridging Between Logical & Physical Networks

Wednesday, November 5th, 2014

In a prior blog, Creating Logical Networks and Services with VMware NSX on Dell Infrastructure, I discussed how easily VMs can be moved from physical (VLANs) to logical networks (Network Virtualization Overlays or NVOs). In practicality, there will almost always be some physical resources on a network that are not virtualized or remain on the physical network (VLANs). So how can VMs on a logical network communicate with resources on the physical network?

One method of communication can be done with the VMware NSX L3 Edge Services Router. However, if you want to just bridge between the logical and physical entities such as bridging between VXLAN to VLAN, the VMware NSX L2 Gateway can be used and this specific use case is discussed in more detail in this blog. (more…)

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Multitenancy on Dell Networking Switches via VRF-lite

Wednesday, October 29th, 2014

Check out the Dell Networking: Multitenancy with VRF-lite white paper. I describe in detail how multitenency can be achieved on supported Dell Networking switches via Virtual Routing and Forwarding (VRF). VRF-lite supports multitenancy by allowing multiple different routing tables within one physical L3 switch/router. This allows for a multitenant network without having to buy additional hardware. In the diagram directly below, each color represents a different customer tenant utilizing the same IP address space (overlapping IP addresses). Such a setup can also be useful for development and testing where traffic isolation is needed; the overlapping IP addresses can be used for ensuring consistency between each development/test environment. (more…)

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Network Virtualization with Dell and VMware NSX [Video]

Thursday, August 28th, 2014

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. (more…)

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Automating VLAN Configuration on Dell FTOS Switches via GVRP

Saturday, February 22nd, 2014

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 as VLAN IDs between switches within the network. GVRP is the standards-based equivalent to Cisco’s Virtual Trunk Protocol (VTP). To read more about Cisco VTP, read my prior blog at networkpros.org. For this blog, I utilize 2 x Dell S60s [FTOS 8.3.3.8 ]and 1x Dell S50N [FTOS 8.4.2.7]. Below is the network diagram for this lab. (more…)

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Redistribution of EIGRP and OSPF in a Hybrid Cisco/Dell Network

Sunday, February 16th, 2014


Check out my latest blog on networkpros.org where I demonstrate redistributing EIGRP routes into OSPF and redistributing OSPF routes into EIGRP in a mixed Cisco IOS and Dell FTOS environment. Of course only the Cisco switches are running EIGRP and all Dell switches are running OSPF. A Cisco Catalyst 6509 switch chassis is running both EIGRP and OSPF, and this is where the redistribution occurs. For this lab I use 1 x Cisco Catalyst 6509 [IOS 12.2(18)SXD7b], 1 x Cisco 7204VXR router [IOS 12.2(11)T9], 2 X Dell S60s [FTOS 8.3.3.8], and 2 x Dell S50Ns [FTOS 8.4.2.7].

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Dell MXL and FC Flex IOM: Enabling Network Convergence via FCoE [Video]

Saturday, February 8th, 2014

As you know from my prior blog, blog, the Dell FC Flex IOM adds 4 x FC ports (8 x FC ports with 2 modules) to the Dell MXL/IOA blade switch and transforms it into a NPIV Proxy Gateway (NPG) allowing for the bridging of FCoE and Fibre Channel at the switch blade level. Check-out the video here on YouTube (also embedded below) or on the Dell MXL wiki page (second video on page) that steps through the details and ease of deployment of this solution. (more…)

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LACP and Trunking Between Juniper JunOS and Dell FTOS Switches

Sunday, January 26th, 2014

In this blog I demonstrate how to configure a LACP LAG and 8021.Q trunking between Juniper JunOS switches and Dell FTOS switches. I will utilize 2 x Juniper EX4200-48T switches [JunOS 11.1R6.4] and a Dell S60 switch [FTOS 8.3.3.9]. Below is the network diagram for this lab. (more…)

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Dell MXL/IOA with FC Flex IOM: Network and Infrastructure Convergence with NPIV Proxy Gateway

Tuesday, January 21st, 2014

Dell FC Flex IO Module for Dell MXL/IOA Blade Switch

Dell FC Flex IO Module for Dell MXL/IOA Blade Switch


Very exciting news from Dell today as they announced the availability of the Dell FC Flex IOM module which transforms the Dell M1000e MXL/IOA blade switch into a NPIV Proxy Gateway (NPG). This allows the MXL/IOA to bridge between Ethernet and Fibre Channel allowing for network convergence with FCoE. (more…)

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