Network-Engineering

9 min read

Network-Engineering | 9 min read

Highway to HCIE

In this blog, I would like to explain the path to my Huawei Certified ICT Expert (HCIE) Certification – it is my third expert level certificate after Cisco and Juniper.

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Tomasz Chmielewski
June 2019
written by Tomasz Chmielewski
36 min read

Network-Engineering | 36 min read

Trying out Arista’s Cognitive WiFi™ Solution

Not so long ago we spent a few days field testing Cognitive WiFi, which is the current WLAN solution from Arista. Cognitive WiFi is a term coined by Mojo Network, which is a company founded in 2003 (known as AirTight back then), they were mainly focused on WIPS and AP mesh groups then evolved into a unified cloud-managed WiFi solution. 

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Maciej Zurawski
April 2019
written by Maciej Zurawski
3 min read

Network-Engineering | 3 min read

EVPN edge routing (incl. type 5 routes) best practises

Below a collection of highly recommended config knobs to use EVPN VXLAN edge routing on QFX5110 leave devices.

For edge-routing on QFX5110 leaves, JunOS 18.1R3-S3 (or newer service releases) should be used for the time being.

The listed config snippets apply for the following design:

  • edge routing on QFX5110 leaves
  • EVPN model used is “VLAN aware service” (using single default-switch instance), n:1 mapping of VLAN to EVI
  • use of “virtual-gateway address” and a unique IP per leaf switch IRB interface
  • eBGP is used for underlay
  • iBGP is used for overlay
  • Underlay ASN: one ASN for all spines, each leaf uses its own ASN

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Johannes Resch
March 2019
written by Johannes Resch

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