How did 100BaseTX dominated 100BaseT4? Networking |
- How did 100BaseTX dominated 100BaseT4?
- Need serious help with subnetted DHCP issue across Metro E...
- Inter Vlan without layer 3
- Cisco Nk9 cannot disable auto-negotiate
- Barracuda Firewalls
How did 100BaseTX dominated 100BaseT4? Posted: 11 Aug 2019 05:19 AM PDT |
Need serious help with subnetted DHCP issue across Metro E... Posted: 11 Aug 2019 12:26 PM PDT Happy Sunday /r/networking I'm at my wits end with this issue that popped up ~6 weeks ago out of the blue. Years of running this same setup and one night, issues. I'll be brief: Quick background: 2 offices. Cisco SG300 core router and SG200 switch at office 1; Unifi Switch at office 2. Unifi access points throughout both. 4 subnetted VLANs, Msft DHCP 2012r2 servers. All networking hardware at office 2 was replaced and issue prevailed (originally another SG200) All users at Office 1 have zero issues retrieving an IP address no matter which network they join. Many (not all) users at Office 2 suddenly are receiving DHCP timeouts. ISP says there have been no changes but the night this popped up they took us offline for 6 hours for maintenance. Many hours on the phone with them, they essentially say "not our problem, it's your network" and stop assigning engineers to it. Here's what i'm seeing:
If I assign these devices static IPs, they work great. ISP says there is no way that they are dropping a single packet out of the DHCP stream and nothing else. Not their problem. Next step was to compare an offer packet for the 'good' device and the 'bad' device. These packets look great except for one thing (as far as I can tell), the Broadcast Flag:
How would this be possible? What can I do to further troubleshoot? I tried the IgnoreBroadcastFlag registry setting, no dice. Happy to post the packets, etc. Thanks in advance... [link] [comments] |
Posted: 11 Aug 2019 02:20 AM PDT Hi guys, I have several floor in my building that require separate ISP for each floor. I setup Vlan that include the floors' devices and ISP provided router. The question is, in each floor there are several cameras but since I can only give each floor a single cable (all devices each floor go through non-managed switch) how can I setup so that my NVR can see the cameras? Can I use one of the router and do some kind of static route? Thank a lot :( Here is the simplified topology. [link] [comments] |
Cisco Nk9 cannot disable auto-negotiate Posted: 11 Aug 2019 04:38 AM PDT Hi! I have a nexus 9k (c9504) version 7.0(3)i7(3). The command "no auto-negotiate" doesn't work on the ports. Has anyone had this problem? The Mighty Internet didn't have much to say [link] [comments] |
Posted: 10 Aug 2019 10:41 PM PDT Network Engineers that deploy Barracuda firewalls. What are you dislikes and likes about the firewalls? What are your thoughts on Control Center? What could make the firewalls better? [link] [comments] |
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