Why use routers instead of switches? Networking |
- Why use routers instead of switches?
- Learning network automation - best place for help?
- Issue connecting to SQL server.
- Packet Loss using Ethernet Cable
- DHCP unable to give IP address to Ubuntu virtual machine after switching physical locations
- DHCP Timeout/Renewal Question
- service provider MPLS VPN
- STP and MAC learning
| Why use routers instead of switches? Posted: 28 Apr 2018 06:11 AM PDT In a enterprise network, where/why would you buy routers when you can get switches lot cheaper? I can get a switch with 4x10+24x1 gig ports, MPLS/BGP/OSPF, 1M FIB for 1/3th of what a router with similar amount of ports would be. And of course when you need lots of 10Gig ports the price difference is going to be a lot larger in favor of a switch. Maybe if you get multiple full BGP tables from different ISPs, couple routers there would make some sense. We operate our own MPLS network in few different cities, and we've built everything with 1U or chassis switches. Just wondering what we're missing :) [link] [comments]  |
| Learning network automation - best place for help? Posted: 28 Apr 2018 10:19 AM PDT I've been digging pretty deep into network automation over the past months. I went through David Bombal's course on udemy along with Krik Byer's free 8 week course shortly after. Now I've moved onto a book called "Mastering Python Networking". I'm at a point where I'm digging into Ansible for the first time and I've hit a snag that I can't figure out. I realize this subreddit is more for enterprise technology so this isn't the best place. There is both /r/learnpython/ and /r/ansible but it doesn't seem like either of those are appropriate to post in for say a niche issue I'm having with Ansible communicating with a NX-OSv switch. I'm all about doing some digging before I just needlessly post but I'm truly at a point where I'm just scratching my head. I'm posting here for direction to hopefully find a good community but I'll provide my issue for context. I'm using GNS3 with NX-OSv and the network automation docker with all required packages and such installed. I'm just following along in the book where I'm using a yaml template with jinja2 variables to connect to the NX-OSv device and configure snmp contact. When trying to do so I get the following output... [link] [comments]  |
| Issue connecting to SQL server. Posted: 28 Apr 2018 03:42 PM PDT I'm having an issue connecting to a MySQL database hosted on amazon AWS via MySQL Workbench. I can connect fine when i use my mobile network tethered to my PC. However when i try to connect via any PC in my house, i get error 10060. I've temporarily disabled both the firewall on my PC as well as the firewall on my router. I've also temporarily forwarded every port (TCP/UDP from 1-65535) in my router. Ontop of this i have set my PC to the DMZ. In MySQL Workbench i'm connecting via Standard (TCP/IP), This works on my friends computer in his house (he is using the same model of router and same ISP) - I am able to connect via my mobile network tether. Is there anything that i can still try? [link] [comments]  |
| Packet Loss using Ethernet Cable Posted: 28 Apr 2018 03:43 PM PDT Hello Everyone. I have a gaming desktop directly connected to the router with anethernet cable and recently i've been experiencing severe packet loss in games like Fortnite and Counter-Strike which in practical terms are equivalent to lag spikes even though my ping is stable (around 40 ms). Also, I use comunnication apps in simultaneous like discord or skype but these seem unaffected by the packet loss. Furthermore, i've ran speedtests everyday and everything seems fine. I also should add this packet loss isn't constant as there are times of the day which the games work just fine. Any ideas on what might be causing this issue? Thanks in advance! [link] [comments]  |
| DHCP unable to give IP address to Ubuntu virtual machine after switching physical locations Posted: 28 Apr 2018 09:38 AM PDT I have recently move and now my virtual machines are not able to get IP addresses consistently (it fails a majority of the time). I have not change any settings my vm configurations. My VM is set up on virtualbox with ubuntu server 16.04 LTS. I am using a bridge network. On ifconfig, the interface does not show the inet address. I have try creating a fresh new install of ubuntu server to no avail. I have try to change MAC address but was still unable to get an IP address. After some digging around. If I manually add an IP address, then I am able to connect to the internet, but on reboot it would fail again. I have recently purchase a new laptop and it works fine on my laptop. Luckily, for some reason today, it start to work and my VM's are now able to get an IP address. I am afraid to shutdown my computer and risk it not working again. Does anyone have any clue what is going on? [link] [comments]  |
| Posted: 28 Apr 2018 07:16 AM PDT TLDR version: When a client boots (Any OS) do DHCP standards tell it to make a DHCP request and will it accept a new IP address from the server if it is different from it's current IP? I know it SHOULD take the new IP, but sometimes with Windows machines they like to keep their old address until I manually /release /renew them from in the OS. Additionally, when a client reaches it's DHCP lease timeout and the server is not available I know it will assign a 164.255.0.0 address to itself, but how often does it check for the DHCP server to come back online and how fast will it require a DHCP assigned IP? I realize it may be different for different OS's but I am dealing with a proprietary linux distro and I believe/hope it sticks to the normal standards for these processes. I am trying to figure out what steps will happen if a power cycle outage on the clients and dhcp server occurs and the dhcp server takes longer to come back up than the clients, and the clients have very short DHCP timeouts. [link] [comments]  |
| Posted: 28 Apr 2018 12:44 AM PDT i'm a little confused at this given i've never done it, but when procuring a private MPLS vpn would the provider give you internal IP addressing configuration or this would still be designed and configured by the client? [link] [comments]  |
| Posted: 27 Apr 2018 07:56 PM PDT So I was thinking about a project I've been working on while folding laundry (exciting right?), and I ran across a spanning tree question I didn't have an answer to. So here it goes: If a parallel link has a port in STP blocking mode, does the switch still learn MAC address locations for that port? I could see the argument for it to learn the binding, since you want the fastest possible recovery when moving a port from blocking to forwarding. However, that could also pose a resource problem for the switch and potentially make FIB lookups slower since one could find multiple valid exit interfaces and then need to check for STP forwarding state before making a decision. How does this work? Or do different vendors implement it differently? [link] [comments]  |
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