Moronic Monday! Networking |
- Moronic Monday!
- Very basic question about logging on ASA
- What could cause a Cisco switch of not learning the mac address of a PC/IP Phone?
- Need a basic overview of how to begin with mapping/VLAN setup
- 100.64.0.0/10 on my LAN?
- Solo Racking Upgrade
- Guest WiFi using Umbrella for DNS/content filtering
- How to use the /48 block
- 1G connection possible on 500-600 Meters of OM1 Multi-mode using Single Mode SFP 1000Base-LX and Mode Conditioning patch?
- Show available interface slots Cards router Cisco
- Secure LAN To LAN gateway
- Not Able to reach Gateway through a Nexus
- Is there reporting functionality for Cisco SDWAN/Viptela
- Dell PowerConnect 6248 Console/Web lost access
| Posted: 27 Jun 2021 05:00 PM PDT It's Monday, you've not yet had coffee and the week ahead is gonna suck. Let's open the floor for a weekly Stupid Questions Thread, so we can all ask those questions we're too embarrassed to ask! Post your question - stupid or otherwise - here to get an answer. Anyone can post a question and the community as a whole is invited and encouraged to provide an answer. Serious answers are not expected. Note: This post is created at 01:00 UTC. It may not be Monday where you are in the world, no need to comment on it. [link] [comments]  |
| Very basic question about logging on ASA Posted: 28 Jun 2021 02:00 PM PDT I'm very new to networks and try to understand logging atm. Can someone explain to me what it means if "beginning" is disabled but "end" is enabled? Logging Configuration [link] [comments]  |
| What could cause a Cisco switch of not learning the mac address of a PC/IP Phone? Posted: 28 Jun 2021 12:41 PM PDT I've been facing some problems at work lately and I would like some help. Sometimes a few users complain about not having internet access so when I checked the switchport that the pc is connected to, the interface was up and status was connected but when I did "sh mac address int x/x", it was empty. Happened with a few other as well. The other problem I'm facing is, some users t even though everything looks fine and their pc has an ip address assigned etc can't access the internet even though other users in the same subnet can access the internet normally. Our access switches are C3850. Any idea what could cause these 2 issues? [link] [comments]  |
| Need a basic overview of how to begin with mapping/VLAN setup Posted: 28 Jun 2021 03:48 PM PDT So I just started a new job. I've worked with Cisco switches before (very lightly), but not HP. I've never setup VLANs before, but I have a basic idea. I got my Network+ in December. This small business I'm at has everything on one .255 subnet, which the IT guy there wants to push to .254. However, from my reading it seems smart to put different departments on different VLANs, even for a small business, am I right? I've never actually had to setup a VLAN from scratch, or worked on one that wasn't on a Cisco switch. There's only like, 4 areas really. Should I combine HR, which only has a couple people, with the front office? Then do a VLAN for the other areas that only have like, a 24 port switch to them.. and one area that has a 48 + 24 port switch? Should I do the VLANs according to the switch area, or by department? I'm assuming I setup the VLAN on the main switch in the MDF? Also, I don't know how large the place will grow. Right now they are tight on addresses since they are all on just one .255, so I'm wondering how many addresses I should give each VLAN if I do do this. Sorry for the noob questions. I've been doing IT for 20 years, but networking I've never been able to dive in this deep before, but whatever I need to do I'll catch on/read on real quick. Edit: I've started a network diagram in yworks. They didn't have one before. I've basically just been putting down the hardware and what they are connected to. I assume I should somehow include the VLANs in the diagram once I get them up? [link] [comments]  |
| Posted: 27 Jun 2021 06:57 PM PDT Hey everyone, While perusing my firewall logs earlier, I found some traffic logs from an end-user device (iphone) -> 100.125.X.X which falls under the 100.64.0.0/10 reserved address space. It's my understanding that 100.64.0.0/10 is a reserved shared address space typically used in an ISP network and isn't publically routed, so I'm trying to understand why I might be seeing this traffic? I wouldn't think much of it if I saw this inbound on wan. I would have just assumed something funky was happening ISP-side, but the fact that it is outbound from an iphone threw me for a loop. Any ideas? [link] [comments]  |
| Posted: 28 Jun 2021 01:54 PM PDT Hello Everyone, Looking to make my solo racking experience a better one. Been debating on switching up the traditional screwdriver. I have come up with three alternatives that could do the job and was looking for opinions, what would any of you use? Bosch Pocket Driver: Amazon Dewalt Cordless Screwdriver: Amazon Ryobi Screwdriver: Home Depot Any thoughts would be appreciated. Thank you [link] [comments]  |
| Guest WiFi using Umbrella for DNS/content filtering Posted: 28 Jun 2021 01:07 PM PDT Been working on migrating DNS for our guest wireless from an internal Umbrella VA to Umbrella Public DNS. For the most part, it works. Issue is devices get a cert error when they hit a blocked page. I'm being told this will be the behavior unless we install the Cisco Root CA cert on devices - obviously not possible since this is just meant to be a guest network. Any suggestions on another DNS/content filtering solution that could leverage our existing Cisco WLC/AP deployment? [link] [comments]  |
| Posted: 28 Jun 2021 01:50 AM PDT Yea, I was an idiot and leased /48 ipv6 block. But I'm trying to figure how to use it, since the ISP won't allow us to announce and they won't even advertise for us. Is there some way, we can tunnel our /48 block, back to a branch office? Thanks! [link] [comments]  |
| Posted: 28 Jun 2021 10:29 AM PDT TLDR: I am looking for people's experience with getting long distance runs on OM1 using Single Mode SFP's and mode conditioning patch cables. ________________________________________________ So I picked up and abandoned project that I thought would be quick and easy, I made a couple assumptions, and that didn't go well. (Assuming the last guy knew what he was doing) So, now that I have reassessed the situation and realized my assumptions were wrong. I am left with 3-4 runs of OM1 that are well past the 275 Meter length for 1G. Equipment being used:
So now I am going down the google \ reddit rabbit hole of making something work, with no possibility of changing out the cable runs anytime soon. My thoughts so far:
So I am looking for feedback \ thoughts \ experience. *I know this isn't ideal
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| Show available interface slots Cards router Cisco Posted: 28 Jun 2021 07:58 AM PDT Hi! I have a question of Cisco Routers and interface card slots. When I try to see installed interface cards, sh inventory or show diag show me the info that I need. But, I want see the slots available slots, I don't find information about it. Slots EHWiC, WIC, etc. I know, I would search the model and will find the total interface cards by hardware, but, I need show this information by commands. I don't speak English, by the way, sorry for the errors. [link] [comments]  |
| Posted: 28 Jun 2021 10:54 AM PDT Hello, please send me to the right place is I'm in the wrong one, I need some advice on reconfiguring an office network. We have a LAN, that is a labratory with many many different OS, microcontrollers, IOT devices, etc... I run a computer with DOS8, Win2000, XP, RHEL, Ubuntu, a few iPads, android devices and a lot of serial to IP gateway/device servers. Our parent company has decided that we are a liability with so many old, unsupported and very unsecure devices. I don't care if I have an connection to WAN from my lab network, but i need to transfer files (on the order of 10GB at a time) regularly to the main LAN on site (which is part of the company wide LAN and contains internet access and VPN to our other remote locations). All my lab devices get time and lots of other updates from our on prem lab server as well as stream data from various test machines to a our central server. Our IT dept. claims there is no way this can be done. I feel like there must be a solution even if its not ideal. (and not hire an intern to run around our campus with an external hard drive) Can anyone help me figure out what I should be searching for? Im out of my wheelhouse and I dont even know what i don't know. Security between the two LANs seems to be the penultimate requirement. I need to be able to transfer files from LAN to LAN but prevent all WAN from reaching the isolated LAN with old DOS machines etc. I hope that all makes sense, thanks for reading. [link] [comments]  |
| Not Able to reach Gateway through a Nexus Posted: 28 Jun 2021 12:56 AM PDT Hey everyone, somehow my brain stucks. It seems so easy but... idk... Scenario: I got a MPLS Router which is connected to our Nexus Switch. The Nexus is the Gateway for the MPLS Router. Our Firewall also is connected to our Nexus Switch. Now i want to set the Firewall as Gateway for the MPLS Router and get rid of the Gateway Config on the Nexus. The whole Scenario is nothing less than a Router on a Stick Configuration, isn't it? [link] [comments]  |
| Is there reporting functionality for Cisco SDWAN/Viptela Posted: 28 Jun 2021 08:03 AM PDT I would like to do some reporting that will give me visibility how the transport is being used. Ultimately I would love to be able to use this information for sizing and all around general knowledge to will allow me to make better decision for new builds. vanalysis is good but there doesn't seem to be a feature where I can generate a report at a desired frequency. Anyone out there have any experience with this? [link] [comments]  |
| Dell PowerConnect 6248 Console/Web lost access Posted: 28 Jun 2021 04:47 AM PDT Hello, I am having issues with 2x PowerConnect 6248 (oldies) that are in a rack far away. The strange this is, is that the username & password we are sure that should work, are not working anymore. "Username or password invalid". Never enabled SSH access on them, so that's not an option. Is it possible that the on-board storage of those switches have died and that they are not working correctly anymore? Any suggestions? [link] [comments]  |
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