Tag Archives: vlan
Dell VRF-lite & VMware NSX: Multitenancy Across Physical & Logical Networks
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 … Continue reading
Dell Networking and VMware NSX: Bridging Between Logical & Physical Networks
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 … Continue reading
Creating Logical Networks and Services with VMware NSX on Dell Infrastructure
If you haven’t already, please checkout the Dell-VMware NSX Reference Architecture (RA) whitepaper. In the reference architecture I explain in detail the foundational NSX-vSphere components and also how Dell can provide a complete end-to-end infrastructure (servers, networking, storage) to support … Continue reading
Automating VLAN Configuration on Dell FTOS Switches via GVRP
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
Dell Force10 Z9000 – Creating Additional Layer 2 Isolation via Private VLANs
Private VLANs provide additional segregation capabilities within a VLAN. A private VLAN provides further layer 2 isolation between ports. A common example of private VLAN use is a hotel providing Internet access for patrons while at the same time preventing … Continue reading
802.1Q Trunking Between Cisco and Dell Force10 Switches
In this lab I use a Dell Force10 S25P switch [FTOS 8.4.2.6] and a Cisco C3750 switch [IOS 12.2(25)SEE3] to demonstrate 802.1Q trunking.
Configuring PVST+ on Cisco Switches
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
Cisco VLAN Trunking Protocol (VTP)
VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that reduces administration in a switched network. When you configure a new VLAN on one VTP server, the VLAN is distributed through all switches in the domain. This prevents you from … Continue reading
Cisco – Spanning VLANs across Switches via Trunking
In this lab I use two Cisco WS-C2960-24TT [IOS 12.2(25)FX] switches to demonstrate how to span VLANs across switches via 802.1q trunking. I avoid using VTP by using “VTP transparent mode”; as a result, I have to configure the VLANs … Continue reading
Setup Inter-VLAN Communication via “Router on a Stick”
This lab demonstrates inter-VLAN communication via the “Router on a Stick” method. To enable inter-VLAN communication, a trunk link is created between a router and switch. Trunk links can carry traffic for multiple VLANS. Trunk links can also be used … Continue reading