In this video, Tony Fortunato explains how a router can lose its configuration when rebooted.
UCNs will have a broad and significant impact on how networks are developed and managed
One of my readers left this question on the blog post resurfacing the idea of running BGP between servers and ToR switches:
When using BGP on a VM for mobility, what is the best way to establish a peer relationship with a new TOR switch after a live migration? The VM won't inherently know the peer address or the ASN.
As always, the correct answer is it depends.
Read more ...Recently I have come through an interesting problem. I needed to download a raw copy of the HDD image located on a remote server (about 180GB) connected via 1 Mbps link. Network connection dropped frequently so the requirement was to reestablish connection automatically, without my intervention.
Definition of Terms
Server - a remote computer with an IP address 172.17.100.5/16 which contains a raw copy of the HDD image - a file /root/ubuntu.iso.
Client - a local computer that copies a raw copy of the HDD image from the server.
Below is my how-to which helped me to fulfill a task. I hope it might be useful to you.
1. Create Multiple Archive Files
The idea is to create a compressed archive file and to split it to multiple sequential chunks in order to make transfer of files less depended on network outages due to an unreliable link.
$ tar cvf - ubuntu.iso | gzip -9 - | split -b 10M -d - ./disk/ubuntu.tar.gz.
The command tar creates a tar archive from a file ubuntu.iso and send it to a standard output instead to the file. The command gzip compress everything from a standard input using the best compression ratio (parameter -9) and send Continue reading