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A core switch maintains an ARP table that maps a devices MAC address to its IP Address. You can easily display this table by entering "show ip arp" but it isn't sorted and on a large network will contain thousands of entries.
I wrote a simple pyth...
I have been building several 4451 routers and 4507R+E switches recently. Right after the devices boot I run a script to create the configuration. The devices have only been up for a couple minutes when the "crypto key generate rsa mod 2048" command i...
Hello jayage,I thought I replied back on 9/11 but I don't see it online.Yes, this setting is a Cisco best practice. It will not interrupt production.I recently did a blog post on disabling weak crypto ciphers on Cisco switches. I recommend doing that...
Thanks Victor!
Here is a link to a blog I did for iPerf3.
https://mwhubbard.blogspot.com/2014/12/using-iperf3-to-verify-link-speed_92.html
The US DoE now develops iPerf and version 3 is much improved. They also have a suite of tools called Perfso...
Hello,
You are doing everything right. When you disconnect the first Macbook the port goes down and the MAC is cleared.
If you want to see the port disabled you could use vmware Fusion and fire up a vm in bridge mode. The vm will use its MAC and t...
Hello Zali,There will not be any impact on production. These two commands are best practices and only come into play if you have a communications problem between your SSH/telnet client and the router. This Cisco document has a good example:https://ww...
Nice write up Mark!
I haven't used the "login block-for seconds" before but will will definitely be testing it out now!
For a public facing SSH I would also suggest using public/private keys for SSH logins. There is a lot documentation on how to set ...
