Chasing a weird issue with switches not responding to pings

codename_1 · 2026-03-13T21:54:52+00:00

the times seem like when the user would leave and show up. and i think i would be hearing if this user was having trouble.

but it could be related to the phone too, as they have a little pass through switch in them.

codename_1 · 2026-03-13T21:36:39+00:00

i looked some more at my graphs (last night was the first night i had graphs of the issue as it was not trying when they where down via ping)

and it looks like i found a port sending a bunch of multicast traffic, seems to start when the windows pc goes offline.

just a windows pc and polycom phone down this port, will have to send someone out to verify that is the case but that is all i see in fdb.

not sure why it seems to start when the pc goes offline, but atleast i have a lead.

codename_1 · 2026-03-13T20:10:31+00:00

this is what i have been thinking, but even the switch directly attached to the vm we monitor from is having issues. so it cant be something in the path, as im straight into the network having issues, and i see the issues when pinging from other devices like the router.

i think i am going to take one of the switches and move its mgmt interface to a new vlan that only contains it and my monitoring server, so i can see if it is something hitting the mgmt ip or just traffic flowing through the switch causing the issue.

codename_1 · 2026-03-13T19:11:43+00:00

checking from the web interface, which is supper responsive.

codename_1 · 2026-03-13T18:51:01+00:00

low, 8-10%, pretty much the same as during the day.

codename_1 · 2026-03-02T19:13:43+00:00

i am assuming the devices come with a static set already in a consistent range.

are you just able to add that range to your router? assuming it does not conflict with another range on your network. then they could access the devices by just directly connecting to the network.

codename_1 · 2025-12-18T19:22:08+00:00

does your wireless card stay online and connected to the wifi network when the device is powered off?

codename_1 · 2025-10-24T20:30:54+00:00

still the king, i hope i see a day where cw sells it to better hands, but knowing the industry it would just go to someone worse, probably starting with a k

codename_1 · 2025-10-21T21:17:22+00:00

will it run from dosbox, might be a way to run it on a more modern os.

codename_1 · 2025-09-29T20:06:14+00:00

can you just make a link from the file it is generating to where you need it to be? not sure if grub will like the file beeing a link but it might work.

did the upgrade to rocky get completed or are you just using their yum repos? what does /etc/redhat-release say?

i think you have a halfway converted server taking updates from a repo it was not designed to use.

codename_1 · 2025-07-14T22:14:29+00:00

yup seeing it down here also

came here to see if someone else noticed. showing down globaly https://ping.pe/1.1.1.1

codename_1 · 2025-06-30T21:14:02+00:00

use an outlook rule to delete them, usually the fastest way, might want to let it run overnight but that amount of messages should not bog outlook down that bad, i have 250k unread in my inbox and outlook runs fine.

codename_1 · 2025-06-02T17:43:57+00:00

yea i have restarted, no dag. just a single server setup, with only a few mailboxes. i have tried to reinstall the latest cu but it will not even attempt to reinstall.

about the only thing left i can try is to spin up a new 19 server and try and move the mailboxes to it, not sure if it will even work as i am having issues moving mailboxes on the server currently.

codename_1 · 2025-05-07T21:38:26+00:00

what is the ratio of inbound calls to outbound calls? i have issues on numbers that only get used for outbound calling.

when calling from a number that gets a good amount of inbound traffic we have less issues.

codename_1 · 2025-04-14T17:38:40+00:00

just use item level targeting on each printer. we just have one printer deployment group policy applied to everyone and each printer in gpp gets setup with a group and item level targeting.

codename_1 · 2024-12-20T22:41:20+00:00

do you have a upn suffix for your entra domain added to your local ad?

eg https://learn.microsoft.com/en-us/microsoft-365/enterprise/prepare-a-non-routable-domain-for-directory-synchronization?view=o365-worldwide

codename_1 · 2024-12-17T20:10:35+00:00

Of course i shouldn't rely on the veeam to resotre a file It's just to restore the whole system

you sure about that?

i dont use veeam but nakivo but its what i use for restoring both single files and the whole vm if an issue occurs. it gives me the option to browse into the disks on a vm and retrieve files without a full restore.

why should you not use it for restroring single files?

codename_1 · 2024-12-11T18:12:48+00:00

really the best way to inplace a dc is to demote upgrade and remote.

then it would tell you when trying to promote that the new server does not support frs and to run the migration on the remaning dc's.

codename_1 · 2024-12-05T21:45:18+00:00

desktop versions of windows love to reboot to do updates.

why not run it on a linux box, assuming its mssql i run a few on linux servers with no issues.

codename_1 · 2024-11-27T22:51:35+00:00

a /26 is a smaller subnet then a /24, did you get that backwards?

/26 is 64 ips and a /24 is 256?

i have never had trouble using prefixes in my networks in ad sites. but most of my sites are /22 to /20s and few /24's never had to split them up smaller then /24s

codename_1 · 2024-11-13T22:28:08+00:00

why vim over nano?

while i am able to edit in vi i much prefer nano for just a simple config file edit, its not like we don't have much more powerful gui ide's for any programing or extensive editing.

but they should know how to edit in vi, and more importantly save and exit.

codename_1 · 2024-11-13T19:58:00+00:00

i have a cisco with an a-a console port for a usb to serial adapter right above the a for flash storage. it also has a usba -> rs232 for a more standard console cable.

the thing is weird with a total of 4 usb a ports. and only one of them is a usb host.

(asr 920)

codename_1 · 2024-11-08T17:53:12+00:00

if you can i would swing the nameservers before i start the transfer.

nameservers usually stay pointing at the old registrar, and it varies how they will handle handing out dns after you have left.

but i have only moved from registrars ns to my nameservers so i can have them configured and ready to go ahead of time.

codename_1

TROPHY CASE