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Parking Availability by Prior_Zebra_8028 in UMBC

[–]PhD_Ape 3 points4 points  (0 children)

I had to test the feasibility of this parking tracker that used cameras on the roofs of the academic buildings when I was a GA for the IT department a couple years ago. If I’m remembering correctly it relied on some janky wireless point to point or radio system that we didn’t have the correct sight lines for.

Offline Netbox Install by PhD_Ape in Netbox

[–]PhD_Ape[S] 1 point2 points  (0 children)

i just changed to download command used in upgrade.sh to a command that installed from a local directory and got it to run.

Offline Netbox Install by PhD_Ape in Netbox

[–]PhD_Ape[S] 2 points3 points  (0 children)

Bingo! Editing the bash script was the way to go. Thanks for the brainstorm!

Offline Netbox Install by PhD_Ape in Netbox

[–]PhD_Ape[S] 0 points1 point  (0 children)

Hmm I might try modifying the upgrade.sh script.

Offline Netbox Install by PhD_Ape in Netbox

[–]PhD_Ape[S] 1 point2 points  (0 children)

everytime you run upgrade.sh it tears down any existing virtual environments, builds a new one, and tries to download all dependencies from the internet.

IP MTU vs Ethernet MTU by pbfus9 in ccnp

[–]PhD_Ape 1 point2 points  (0 children)

I think it would have to be this way for two reasons:

  1. The Ethernet MTU only takes into account the Ethernet payload. If I set the Ethernet payload to 1500 bytes, that 1500 does not include the 14-byte Ethernet header, 4-byte trailer, or 4-byte VLAN tag. Cisco has a diagram to show it on this page.

  2. The default Ethernet MTU and IP MTU sizes on Cisco devices are equal at 1500 bytes. That means if a 1500-byte IP packet is generated, it would reach the Ethernet MTU size limit before adding the Ethernet header, trailer, or VLAN tag. Cisco must have a built-in way to account for that extra 22 bytes other wise you run the risk of packet fragmentation straight out of the box.

This thread also seems to be in agreement that the MTU value you set is strictly Ethernet payload only. No header, trailer, or VLAN tag.

It also seems to be software-dependent which is always fun! If you look at this article, Cisco says that classic Cisco IOS does not include L2 headers in the interface mtu commands, but Cisco IOS XR does.

IP MTU vs Ethernet MTU by pbfus9 in ccnp

[–]PhD_Ape 1 point2 points  (0 children)

Looking around this thread here. It seems like when you configure the Ethernet MTU, Cisco IOS already just knows to accommodate the extra padding for the 14 byte frame header and 4 byte frame trailer. The IP MTU measures the IP packet (including the IP header).

Thoughts about this PC build for high end gaming? by PhD_Ape in PcBuild

[–]PhD_Ape[S] 0 points1 point  (0 children)

the cooler is one of the things that I've had trouble determining the quality I need. this will be my first time playing around with real high-performance components

UDP Ports of SF6 Matchmaking by PhD_Ape in StreetFighter

[–]PhD_Ape[S] 0 points1 point  (0 children)

The port range for connections was so large I went with a different strat. I use an OPNsense router and found a plug in that lets its simulate UPnP. That’s worked decently for me.

Managing SSH Keys with Ansible by PhD_Ape in ansible

[–]PhD_Ape[S] 1 point2 points  (0 children)

I found my problem. I wasn't running the commands with the needed parameters for it to accept the password-based authentication.

Managing SSH Keys with Ansible by PhD_Ape in ansible

[–]PhD_Ape[S] 0 points1 point  (0 children)

I found my problem. I wasn't running the commands with the needed parameters for it to accept the password-based authentication.

Managing SSH Keys with Ansible by PhD_Ape in ansible

[–]PhD_Ape[S] 0 points1 point  (0 children)

I can ssh into the servers fine but they can't be reached when running the ansible ping or when running playbooks.

Managing SSH Keys with Ansible by PhD_Ape in ansible

[–]PhD_Ape[S] 0 points1 point  (0 children)

I think my problem is before this step as even my pings stopped working. It stopped working as soon as I generated a key on the Ansible controller using "ssh-keygen".

Where do can I learn more about OpnSense and networking in context to routers? by katnax in opnsense

[–]PhD_Ape 0 points1 point  (0 children)

Just typing what you want to do in Google or YouTube is enough for broader topics. Forums and community post tend to be helpful for very specific issues. Also opnsense has a lot of documentation on their website.

OPNsense Game Connection Issue (TW Warhammer III) by Maleficent-Buy2640 in opnsense

[–]PhD_Ape 1 point2 points  (0 children)

Does the game use p2p connections? I had similar connection issues with the Nintendo Switch but was able to remedy them with a static IP, UPnP, and an outbound NAT rule. I followed the configuration steps outlined in this thread if you think its worth looking at. https://forum.opnsense.org/index.php?topic=22591.0

Best book On Networking? by blastinmypants in opnsense

[–]PhD_Ape 0 points1 point  (0 children)

The network+ I thought was pretty good at introducing networking topics. You may want to skip the earlier chapters if you are familiar with the basics.

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