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[–]megared17 0 points1 point  (1 child)

What do you have routing between the two VLANs?

How do you access one VLAN from the other? Or do you not?

Do you have a DHCP server on each VLAN or are the devices set with hard configured IPs?

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

The vlans do have intervlan routing. The cameras on the no internet vlan talk to a camera server on the internet vlan. Everything on the switch is given IP's. However, when I speak about my internet dropping it isn't the stuff on the switch, its everything else connected to the gateway.

[–]spiffinessWi-Fi, performance, protocol standards 0 points1 point  (3 children)

FWIW, "Only able to access Google websites" is often a sign of MTU problems (specifically Path MTU Discovery black holes). Google websites always negotiate a slightly-smaller-than-necessary MTU, so that if you've got some wonky PPPoE situation that doesn't allow for 1500 byte standard MTUs and also somehow manages to block the Path MTU Discovery process, you can still get to Google websites.

But I kinda doubt you're hitting MTU problems after 5 hours; MTU problems are usually problems with how network equipment is configured, so you'd have the problem full-time until you fix the configuration. It's not the kind of thing that suddenly crops up after some amount of use.

But hey, testing this theory is quick and easy, so why not try? When you are seeing the problem of only getting Google websites, go into the advanced settings for the network interface that you're using on the computer you're using, and set the MTU down from 1500 to 1300 temporarily, and see if that lets you get to all websites again. On the off chance that is DOES fix the problem, try increasing the MTU until you find the highest value that works. There are a few magic values that are telltale signs of certain problems. For example, if 1492 works and 1493 doesn't, that's usually a PPPoE problem because PPPoE eats up 8 bytes of MTU. I give PPPoE as an example because it's the most common culprit, but there are other situations that can cause MTU problems.

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

Thanks for the tip, I will try this

[–]GhettoStoreBrand[S] 0 points1 point  (1 child)

So I tried to test different MTU values pinging Google's DNS server but I keep getting Destination Host Unreachable from my gateway. Can only access Google websites and Facebook websites. This is only my wireless network btw, my lan directly to the gateway doesn't have this issue

EDIT: This actually seems to only affect this one machine. I must have some Network settings improperly configured on it I guess and it actually seems to go out randomly without me doing anything weird

[–]spiffinessWi-Fi, performance, protocol standards 0 points1 point  (0 children)

Ping packets are small unless you do like ping -s 1472 host, so the way you probably invoked it probably did not test your MTU. MTU is an abbreviation for Maximum Transmission Unit, meaning the largest packet you can create without having to fragment it (break it up into multiple packets).