Monday, 11 February 2019

Consideration when connection an MSTP Region with another MSTP Region or with a Rapid PVST+ Domain

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Multiple Spanning Tree Protocol (MSTP) Multiple Spanning-Tree maps the set of VLANs into MST instances (MSTI) which each has an instan...
Friday, 28 December 2018

VXLAN Part XV: Analysis of the BGP EVPN Control Plane Operation

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Document Status: Unfinished Edited: Monday, 7 January 2019 This chapter covers the following topics: MAC address learning process (In...
4 comments:
Monday, 19 November 2018

VXLAN Part XIV: Control Plane Operation in BGP EVPN VXLAN Fabric

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Now you can also download my VXLAN book from the Leanpub.com  "Virtual Extensible LAN VXLAN - A Practical guide to VXLAN Solution Pa...
12 comments:
Thursday, 18 October 2018

VXLAN Part XIII: Firewall Implementation to VXLAN Fabric

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Now you can also download my VXLAN book from the Leanpub.com  "Virtual Extensible LAN VXLAN - A Practical guide to VXLAN Solution Par...
31 comments:
Tuesday, 25 September 2018

VXLAN Part XII: Routing Exchange: intra/inter-L2VNI, EVPN-to-IP, EVPN-to-VPNv4

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Edited: 25.9.2018 | Toni Pasanen We are using BGP EVPN (MP-BGP AFI25/SAFI70-EVPN) to exchange MAC-IP (Type-2) and Prefix (Type-5) reach...
13 comments:
Tuesday, 4 September 2018

VXLAN Part XI: Using vPC Peer Link as an Underlay Backup Path

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Edited: Wednesday, 5 September 2018 | Toni Pasanen This short post shows how VTEP Leaf switch can use a vPC peer link as a backup path...
1 comment:
Friday, 24 August 2018

VXLAN Part X: Recovery issue when BGP EVPN peering uses the same loopback interface as a source than VXLAN NVE1 interface

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Now you can also download my VXLAN book from the Leanpub.com  "Virtual Extensible LAN VXLAN - A Practical guide to VXLAN Solution Pa...
11 comments:
Sunday, 19 August 2018

VXLAN Part IX: VXLAN BGP EVPN - vPC

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This post describes how the Multi-Chassis Link Aggregation Group (MC-LAG) technology using virtual PortChannel (vPC) works in a VXLAN BGP...
39 comments:
Tuesday, 5 June 2018

VXLAN Part VIII: VXLAN BGP EVPN – External Connection

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This post shows how to connect an external network to our existing VXLAN fabric. From the two models, Border Leaf and Border Spine, I am go...
32 comments:
Sunday, 6 May 2018

VXLAN Part VII: VXLAN BGP EVPN –Control Plane operation

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Now you can also download my VXLAN book from the Leanpub.com  "Virtual Extensible LAN VXLAN - A Practical guide to VXLAN Solution Pa...
17 comments:
Tuesday, 17 April 2018

VXLAN Part VI: VXLAN BGP EVPN – Basic Configurations

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In my previous post “VXLAN Part V: Flood and Learn”, I have shown, how VXLAN works without Control Plane protocol. In this post, I am going...
31 comments:
Monday, 26 March 2018

VXLAN Part V: Flood and Learn

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In this chapter, I am going to show how the VXLAN Flood & Learn mac learning process works. I am going to ping from Host-1 to Host-2 an...
10 comments:
Tuesday, 20 March 2018

VXLAN Part IV: The Underlay Network – Multidestination Traffic: PIM BiDir

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My Last post, VXLAN Part III, introduces VXLAN Fabric L2VNI service with Anycast-RP PIM (RFC4610 and RFC 7761). In this chapter, I will sho...
17 comments:
Sunday, 18 March 2018

VXLAN Part III: The Underlay Network – Multidestination Traffic: Anycast-RP with PIM

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The role of the Underlay Network, related to BUM traffic in the VXLAN fabric, is to transport ARP, ND, DHCP and other Layer 2 BUM (Broadcas...
24 comments:
Saturday, 10 March 2018

VXLAN Part II. The Underlay network – Unicast Routing

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Introduction VXLAN is MAC-over-IP / UDP tunneling mechanism that allows the Layer2 segments to be stretched over the Layer3 network (Und...
13 comments:
Friday, 23 February 2018

VXLAN Part I. Why do we need VXLAN?

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Introduction This section examines the challenges that virtualization of servers causes for Datacenter networks with traditional thr...
36 comments:
Monday, 9 October 2017

Rapid per VLAN Spanning Tree protocol (Rapid PVST+): Synchronization

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Introduction This article describes the Rapid per VLAN Spanning Tree Protocol (Rapid PVST +) synchronization process based o...
Thursday, 6 July 2017

Border Gateway Protocol – Finite State Machine (BGP-FSM)

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Introduction The BGP-FSM model presents different states during BGP neighbor negotiation: Idle, Connect, Active, OpenSent, OpenConfirm...
8 comments: