# Network Management **URL:** https://forum.networklessons.com/c/routing-switching/network-management/23.md [Latest](https://forum.networklessons.com/latest.md) · [Categories](https://forum.networklessons.com/categories.md) --- ## [About the Network Management category](https://forum.networklessons.com/t/about-the-network-management-category/29)
**Author:** [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)\ **Replies:** 0\ **Last updated:** [December 13, 2016, 12:33pm UTC](https://forum.networklessons.com/t/about-the-network-management-category/29 "2016-12-13T12:33:24Z")
Got questions about network management protocols like SNMP, SSH or telnet? We can discuss them here. --- ## [GPON Technology](https://forum.networklessons.com/t/gpon-technology/58747)
**Author:** [@davidilles](https://forum.networklessons.com/u/davidilles)\ **Replies:** 8\ **Last updated:** [November 22, 2025, 12:06pm UTC](https://forum.networklessons.com/t/gpon-technology/58747 "2025-11-22T12:06:05Z")
Hello, everyone. I’m not sure if this is the right place to ask so let me know if it isn’t! I work at an ISP space and I encountered a technology called GPON. I understand that the principle is the following: The ro… --- ## [Switches installed in a rack vertically](https://forum.networklessons.com/t/switches-installed-in-a-rack-vertically/58210)
**Author:** [@davidilles](https://forum.networklessons.com/u/davidilles)\ **Replies:** 1\ **Last updated:** [July 28, 2025, 4:03pm UTC](https://forum.networklessons.com/t/switches-installed-in-a-rack-vertically/58210 "2025-07-28T16:03:18Z")
Hello, everyone. I have a fairly quick question. At work today, I was reviewing how switches are installed in a rack for a specific company and I noticed that they have the large Cisco switches installed vertically, the… --- ## [Udp 'one' s complement](https://forum.networklessons.com/t/udp-one-s-complement/36945)
**Author:** [@inci2434](https://forum.networklessons.com/u/inci2434)\ **Replies:** 1\ **Last updated:** [May 26, 2023, 5:44am UTC](https://forum.networklessons.com/t/udp-one-s-complement/36945 "2023-05-26T05:44:45Z")
List all the integers that the 2−bit ones’ complement numeral system represents. How can we find 10 ⊕ 10? --- ## [Power alarms](https://forum.networklessons.com/t/power-alarms/32749)
**Author:** [@aparna.tripathy23](https://forum.networklessons.com/u/aparna.tripathy23)\ **Replies:** 1\ **Last updated:** [December 6, 2022, 5:59am UTC](https://forum.networklessons.com/t/power-alarms/32749 "2022-12-06T05:59:42Z")
WAN port getting high power alarm logs , What is the command to check the status and how to rectify this. cisco ASR-920-4SZ-A Dec 3 08:46:54.397 %SFF8472-3-THRESHOLD\_VIOLATION: Te0/0/2: Rx power high warning; Operati… --- ## [At restart Router is losing the configuration](https://forum.networklessons.com/t/at-restart-router-is-losing-the-configuration/27830)
**Author:** [@dan.pirvanescu](https://forum.networklessons.com/u/dan.pirvanescu)\ **Replies:** 2\ **Last updated:** [June 21, 2022, 1:35pm UTC](https://forum.networklessons.com/t/at-restart-router-is-losing-the-configuration/27830 "2022-06-21T13:35:39Z")
Any sugestion about the below? Any time I have to run the: configure replace nvram:startup-config Thank you! R1#show version Cisco IOSSoftware, 2800 Software (C2800NM-ADV… --- ## [Sdwan\_updates](https://forum.networklessons.com/t/sdwan-updates/14893)
**Author:** [@bakkya2989](https://forum.networklessons.com/u/bakkya2989)\ **Replies:** 2\ **Last updated:** [July 15, 2021, 8:36am UTC](https://forum.networklessons.com/t/sdwan-updates/14893 "2021-07-15T08:36:06Z")
Hi Rene, We need more documents on SDWAN like creating policies/Templates (CLI/GUI) TLOC/TLOC Extensions/Local and Centralized Policies etc., When we can expect… Please update us… --- ## [Networking monitoring on EVE-NG](https://forum.networklessons.com/t/networking-monitoring-on-eve-ng/14176)
**Author:** [@telecomstudent2020](https://forum.networklessons.com/u/telecomstudent2020)\ **Replies:** 1\ **Last updated:** [April 23, 2021, 5:49am UTC](https://forum.networklessons.com/t/networking-monitoring-on-eve-ng/14176 "2021-04-23T05:49:11Z")
Hi there, We have a college assignment on EVE-NG. We are asked to do network monitoring… Any tips on the monitoring software/ ways to do it ? Thank you ! --- ## [Cisco Application Centric Infrastructure](https://forum.networklessons.com/t/cisco-application-centric-infrastructure/11177)
**Author:** [@john\_1989](https://forum.networklessons.com/u/john_1989)\ **Replies:** 1\ **Last updated:** [May 28, 2020, 11:40am UTC](https://forum.networklessons.com/t/cisco-application-centric-infrastructure/11177 "2020-05-28T11:40:58Z")
Hi Rene, Could you please share path to any Cisco ACI related lessons on Network Lessons that I can refer to understand more about Cisco’s ACI ? --- ## [Difference between SPAN and NetFlow](https://forum.networklessons.com/t/difference-between-span-and-netflow/9917)
**Author:** [@aquas19](https://forum.networklessons.com/u/aquas19)\ **Replies:** 1\ **Last updated:** [February 21, 2020, 7:19am UTC](https://forum.networklessons.com/t/difference-between-span-and-netflow/9917 "2020-02-21T07:19:48Z")
Hi, Can someone please advise what is the difference between the two.Both talk about monitoring the traffic on interfaces. --- ## [IPSLA between 2 remote sites via a core 7k](https://forum.networklessons.com/t/ipsla-between-2-remote-sites-via-a-core-7k/9714)
**Author:** [@michaelby1](https://forum.networklessons.com/u/michaelby1)\ **Replies:** 0\ **Last updated:** [February 4, 2020, 9:40am UTC](https://forum.networklessons.com/t/ipsla-between-2-remote-sites-via-a-core-7k/9714 "2020-02-04T09:40:03Z")
Here is my scenario I have DC1 and DC2 both have nexus 7k core, connected to NExus 5k, connected to nexus 2k I have one device hanging of both 2k with IP of 10.65.x.10 and 10.65.x.ll in VLAN 66. All routing between b… --- ## [Micro Bursts and Hardware logic](https://forum.networklessons.com/t/micro-bursts-and-hardware-logic/8422)
**Author:** [@nitayp1](https://forum.networklessons.com/u/nitayp1)\ **Replies:** 6\ **Last updated:** [October 8, 2019, 12:17pm UTC](https://forum.networklessons.com/t/micro-bursts-and-hardware-logic/8422 "2019-10-08T12:17:59Z")
Hello everyone, Couldn’t find better place to ask this question. In the CCIE Written Exam there is a topic called “micro bursts” First of all, I get the big idea behind them and how they impact the network. What I co… --- ## [Changing ip domain-name](https://forum.networklessons.com/t/changing-ip-domain-name/7822)
**Author:** [@ajm21st](https://forum.networklessons.com/u/ajm21st)\ **Replies:** 1\ **Last updated:** [August 5, 2019, 7:09am UTC](https://forum.networklessons.com/t/changing-ip-domain-name/7822 "2019-08-05T07:09:53Z")
Hello All, Do rsa keys need to be re-generated if the ip domain-name on a cisco device is changed to a differente ip domain-name ? For example. Changing the name from "ip domain-name example.com " to “ip domain-name new… --- ## [Netflow Configuration Issues on Cisco 3750X](https://forum.networklessons.com/t/netflow-configuration-issues-on-cisco-3750x/7655)
**Author:** [@1cyberking](https://forum.networklessons.com/u/1cyberking)\ **Replies:** 1\ **Last updated:** [July 16, 2019, 10:43am UTC](https://forum.networklessons.com/t/netflow-configuration-issues-on-cisco-3750x/7655 "2019-07-16T10:43:30Z")
I have attempted to configure netflow v9, but I am not able to generate any flows within my 3750X switches. Should I add more configuration to my netflow module to get the flows to be read on my solarwinds NTA server? Or… --- ## [3850 Management Interface](https://forum.networklessons.com/t/3850-management-interface/6583)
**Author:** [@braveheart814](https://forum.networklessons.com/u/braveheart814)\ **Replies:** 1\ **Last updated:** [March 26, 2019, 9:16am UTC](https://forum.networklessons.com/t/3850-management-interface/6583 "2019-03-26T09:16:37Z")
Ahoy mates, Our network lacks enough vertical fiber pairs to support a true OOB management network. Could I assign an IP address and connect a cable to Gi0/0, connect it to a port on the front panel that belongs to my … --- ## [Snmp auth priv question](https://forum.networklessons.com/t/snmp-auth-priv-question/5893)
**Author:** [@sclarke1210](https://forum.networklessons.com/u/sclarke1210)\ **Replies:** 1\ **Last updated:** [January 18, 2019, 2:02pm UTC](https://forum.networklessons.com/t/snmp-auth-priv-question/5893 "2019-01-18T14:02:29Z")
Hi I have a question regarding snmpv3, with the auth priv enabled does the username and password get hashed and sent over from the agent to the manager prior to diffie hellman being run or is diffie hellman run first a… --- ## [NTP on Nexus](https://forum.networklessons.com/t/ntp-on-nexus/770)
**Author:** [@stevegalarza](https://forum.networklessons.com/u/stevegalarza)\ **Replies:** 2\ **Last updated:** [December 28, 2016, 6:00am UTC](https://forum.networklessons.com/t/ntp-on-nexus/770 "2016-12-28T06:00:40Z")
Hello All, Does anyone know how to change the NTP on a Nexus 7000? Does not seem that straight forward unfortunately. Steve --- ## [Monitoring Cisco 3650 L3 Switches with Observium](https://forum.networklessons.com/t/monitoring-cisco-3650-l3-switches-with-observium/729)
**Author:** [@chad](https://forum.networklessons.com/u/chad)\ **Replies:** 4\ **Last updated:** [December 21, 2016, 3:41pm UTC](https://forum.networklessons.com/t/monitoring-cisco-3650-l3-switches-with-observium/729 "2016-12-21T15:41:49Z")
I’ve been using Observium for a while and there seems to be some discrepancies between my graphs and the upstream (my data center provides me Ethernet GigE bandwidth). For example, from around 8am to 12pm today it showed… --- ## [Terminal Server Errors](https://forum.networklessons.com/t/terminal-server-errors/581)
**Author:** [@lisadiven](https://forum.networklessons.com/u/lisadiven)\ **Replies:** 1\ **Last updated:** [January 17, 2016, 9:56pm UTC](https://forum.networklessons.com/t/terminal-server-errors/581 "2016-01-17T21:56:28Z")
I am having some problems with my terminal server - I have 5 devices connected to my terminal server and all of them are showing overruns - I am using a Cisco 2620 router with an interface card - the octal cable is plugg…