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Cisco Helps Service Providers Build a Sustainable Internet for the Future with Advancements to Its Converged Network Solution to Lower Costs

Published on: 2022-06-27

SAN JOSE, Calif., June 27, 2022 — Today Cisco (NASDAQ: CSCO) announced advancements to its Routed Optical Networking solution, delivering on its commitment to redefine the economics of the internet and help communication service providers close the digital divide by connecting more people,...

MPLS, SDN, even SD-WAN can give you the network observability you need

Published on: 2022-04-25

What do router networks and a preschool have in common? A lot more than you think. Read on for the answer. To the average enterprise, “network” means “router network”. It’s not that there aren’t other things in the network, but that the whole of enterprise networking is about building IP...

Firewall options on a budget

Published on: 2022-07-28

Here’s a scenario that you may have experienced first-hand. Imagine you’re the IT manager of a small business. The management approaches you and says, “We need to secure our network with a firewall.” Typically, such impulsive announcements from the management come after they’ve taken some...

Twilight Zone: File Transfer Causes Link Drop

Published on: 2022-07-13

Long long time ago, we built a multi-protocol WAN network for a large organization. Everything worked great, until we got the weirdest bug report I’ve seen thus far: Try to figure out what was going on before reading any further ;) I got onsite, the customer started the file transfer, and (as...

Modifying Maximum Throughput of Catalyst8000v

Published on: 2022-07-05

The Catalyst8000v is Cisco’s virtual version of the Catalyst 8000 platform. It is the go to platform and a replacement of previous products such as CSR1000v, vEdge cloud, and ISRV. When installing a Catalyst8000v, it comes with a builtin shaper setting the maximum throughput to 10 Mbit/s as can...

The Future of IP Telephony with Cisco

Published on: 2022-06-20

For over twenty years, Cisco has been one of the leading providers of IP Telephony and VoIP systems for medium, large, to very large enterprises of all types. Its flagship product, the Cisco Unified Communications Manager (CUCM) along with its various companion Unified Communication (UC)...

Are Routing Protocols Automation ?

Published on: 2022-05-17

Routing protocols have self-configuration features as part of the design. For example, OSPF neighbour discovery was intended to simplify the deployment of new routers onto a network segment. BGP shares configuration information so that each router automatically learns subnets in the reachable...

Know Your Measure: How to Measure Your Worth as a Network Engineer?

Published on: 2022-05-06

The ancient Greek phrase “γνῶθι σεαυτόν,” which means “know thyself” was the first of three axioms inscribed on the outer court of the Temple of Apollo at Delphi. For centuries, learned men and women, from ancient Greek philosophers to contemporary authors, have written about the deeper meaning...

VCF Upgrade Failure with Static NSX-T Routing

Published on: 2022-04-29

Do you have a VMware Cloud Foundation infrastructure that’s using NSX-T to statically route network traffic between the NSX-T Edges and the physical network? If so, you can be faced with this error when attempting to upgrade VCF via the SDDC Manager: This is a quick post with the solution to...

ZPE - A New Swiss Army Knife Networking Product

Published on: 2021-09-27

ZPE presented at Networking Field Day 26 on Sept 16, 2021 and I will be honest, at first I couldn't figure out where to put ZPE in terms of a product and service category. As they were a first time NFD presenter and I had not heard of them before I was asking myself, are they a remote console...

Operating Sonos Speakers in a Multi-VLAN Network

Published on: 2021-08-04

In a throwback to the problems I dealt with using AirPlay across VLANs, I recently jumped through similar hoops for Sonos speakers. There are many forum and blog posts out there that describe (or attempt to describe) how to make this work, however all of the ones I read suffered from one or both...

Juniper i40e NVM Firmware Upgrade

Published on: 2021-05-20

Juniper Routing Engines with VM Host need an i40e NVM firmware upgrade. The procedure is a pain in the ass, and documentation is not great. But you can’t avoid the upgrade any more. New Junos versions need the firmware upgrade, and replacement REs will ship with it already installed. Here’s some...

Juniper Direct vs Local Routes

Published on: 2020-05-31

Juniper routers consider a directly configured IP as a “direct” route, except when you use a mask (for IPv4). Then it is a “local” route. This caused me some confusion when creating a policy to redistribute loopback IP addresses into BGP. A router learns routes from a variety of sources -...

GoBGP – A Control Plane Evolving Software Networking

Published on: 2016-03-29

If I have talked to you over the past year or two about networking, odds are I have mentioned a project to you called GoBGP. If we have spoken a lot, you are probably sick of me talking to you about GoBGP There is a reason, it’s because GoBGP is a missing link in networking that has been for a...

Configuring Macvlan and Ipvlan Linux Networking

Published on: 2016-03-28

Macvlan and Ipvlan are both Linux type networking interfaces that are both supported by the Linux kernel. They are unique for a few different reasons. One thing that makes them both very attractive is they do not use bridges in their implementation and natively namespace aware. It solves some...

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