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    • steveS

      Static and Dynamic Routing - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training prof messer comptia network+ networking routing static routing dynamic routing router video training certification it training it career youtube
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      melvinsilvaM

      Both required a good initial configuration, but when "issues" occurs like link flaps or ISP outage (when MPLS fails), Dynamic may affect Router performance (CPU, Memory, etc).

      Using Dynamic Routing; if you have no backup link or you dont have a proper failover configuration with correct threshold, the network updates will cause router performance degradation. It constantly will try to reach destination via default gateway.

      Using Static Routing; If you have not a recovery plan or a back door to enter the remote router, you will have zero access to that device until link or issue is restored. Packets will be forwarded to a dead route.

      For both, Initial design and configuration is the Key, when issues happens troubleshooting is a nightmare when things are not well done.

    • steveS

      Switch Interface Properties - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training comptia network+ prof messer networking switching certification it training video training youtube switch
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      scottalanmillerS

      @mary said in Switch Interface Properties - CompTIA Network+ N10-007 Prof Messer:

      Are port mirrors common for companies that monitor what employees are doing on the network or is something else used?

      No, that would be insanely impractical. A port mirror doesn't give you a copy of what someone is actually doing, it gives you a copy of the network traffic. Which is a butt load of disconnected data. It's not like you would know what the end user was doing, only what was being transferred on the wire.

      If you think about what you'd see on the wire... a single file transfer or LAN based action might generate a huge amount of traffic. Or going to a website might create a bunch of unintentional traffic from ads that aren't something that the end user cared about. Or a website or app open in the background might generate gops of traffic for something that isn't being used.

      It would be able to tell you if the person is on YouTube or Spotify, but would not tell you what they are doing that for or if they are actively "using" that thing. Basically you'd be flooded with information that would take ages to sort through, and the resulting information would tell you essentially nothing about what the end user was doing.

    • steveS

      Spanning Tree Protocol - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training comptia network+ prof messer it training video training youtube it career networking stp spanning tree protocol switching
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      travisdh1T

      @melvinsilva said in Spanning Tree Protocol - CompTIA Network+ N10-007 Prof Messer:

      I had experience when "users" manipulate patch panel or switch and plug both end of the cable (patch cord) to the same switch, creating a physical loop, but STP blocks this and prevent network issues.

      Yeah, having switches that have STP turned on by default can be such a life saver in those situations. One place I worked liked to put in unmanaged switches all over the place. Caused me multiple long nights just tracking down which switch was the issue and then finding the loop cable. I knew exactly what was going on, finding it without good documentation and people saying "Oh, there's another network thingy over here." was just so much.... fun.

    • steveS

      Network Segmentation - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training prof messer comptia network+ networking vlan certification it training video training it career youtube
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      maryM

      Is there a limit to how many trunks you can use?

    • steveS

      Protocol Data Units - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training network+ comptia networking certification prof messer it training video training it career
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      WrCombsW

      @scottalanmiller said in Protocol Data Units - CompTIA Network+ N10-007 Prof Messer:

      @WrCombs said in Protocol Data Units - CompTIA Network+ N10-007 Prof Messer:

      Why would you not want to fragment a frame?

      Performance. Fragmentation takes time and effort. If you can avoid it, there is less work to be done and, all other things being equal, that means cheaper equipment going faster.

      Ah, That makes sense.

    • steveS

      Unicasts, Broadcasts, and Multicasts - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training network+ comptia prof messer unicast broadcast multicast networking it training it career video training youtube
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      scottalanmillerS

      It's more purpose based. Unicast is for normal communications. Broadcast is normally reserved for special cases like DHCP where there is no way to do unicast.

    • steveS

      Broadcast Domains and Collision Domains - CompTIA Network+ N10-007

      Watching Ignoring Scheduled Pinned Locked Moved Training networking comptia network+ prof messer video training it career it training ethernet broadcast domain collision domain
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      maryM

      Can anyone give me an example of a broadcast domain? This seems a bit basic. It made me think of things like push notifications, so I'm not sure if I'm getting the concept.

    • steveS

      Network Switching Overview - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training comptia network+ networking prof messer certification it training video training it career switch
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      scottalanmillerS

      Worth noting that STP (Spanning Tree) is common in good switches, but it's also common to have switches that don't have it.

    • steveS

      Introduction to Ethernet - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training network+ comptia ethernet prof messer networking it training it career video training certification
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      WrCombsW

      Watched this one during lunch today, I thought This was a good way to explain Network behavor.

    • steveS

      Understanding the OSI Model - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training iso osi comptia network+ prof messer networking it training video training youtube it career
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      I'd like to think of "L3 switch" as being short for switch with layer 3 functions.
      Often they are used for routing traffic between VLANs. A router can do that as well but a L3 switch can usually do faster and on more ports at the same time.

      Typical is to have a bunch of L2 switches where the end points connect and then the L2 switches are uplinked to one L3 switch that takes care connecting the L2 switches together and do inter-VLAN routing.

      There are also L3 Lite switches (aka L2+) which are L2 switches with a limited L3 functionality like for instance static routing.

      L3 switches are usually the ones with the most features in all categories so sometimes you need to buy a L3 switch because you are after some other feature, like redundant power or what not.

      In small networks L3 switches are usually not needed.

      As an example Dell's PowerSwitches for instance are managed switches for building out the network to end points (campus).

      They are like this:

      N1100 series - L2 switch N1500 series - L3 Lite switch N2000, N3000 series - L3 switch

      They have the same OS and work the same but each step up in the series gives you more features and more speed and higher cost.

    • steveS

      CompTIA Network+ v7 N10-007 by Prof. Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training network+ comptia certification networking prof messer youtube it career video training it training
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    • steveS

      Common Ports - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training network+ comptia certification prof messer youtube networking video training it training it career ipv4 ipv6 tcp upd tcpip
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      MC_BolM

      this is amazingly didactical... really enjoy this.

    • steveS

      Introduction to IP - CompTIA Network+ N10-007 Prof Messer

      Watching Ignoring Scheduled Pinned Locked Moved Training network+ comptia prof messer networking ipv4 ipv6 video training it training it career youtube
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      V

      This video was a great introduction to networks. I like the description of the moving truck, it gives an image to start.

    • mlnewsM

      Network+ N10-006 Video Training by Prof. Messer - Unified Voice Services

      Watching Ignoring Scheduled Pinned Locked Moved IT Careers prof messer network+ youtube unified voice services voip sip telephony
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    • mlnewsM

      Network+ N10-006 Video Training by Prof. Messer - Web Services

      Watching Ignoring Scheduled Pinned Locked Moved IT Careers network+ prof messer youtube web services
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    • mlnewsM

      Network+ N10-006 Video Training by Prof. Messer - Remote Access Services

      Watching Ignoring Scheduled Pinned Locked Moved IT Careers prof messer network+ youtube
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      1 Posts
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    • mlnewsM

      Network+ N10-006 Video Training by Prof. Messer - TACACS and RADIUS

      Watching Ignoring Scheduled Pinned Locked Moved IT Careers prof messer network+ comptia youtube video training tacacs radius authentication
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      1 Posts
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    • scottalanmillerS

      Start Your IT Career with the CompTIA Network+ Certification SAMIT Video

      Watching Ignoring Scheduled Pinned Locked Moved IT Careers certification comptia network+ samit youtube career education
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    • mlnewsM

      Network+ N10-006 Video Training by Prof. Messer - VPN Protocols

      Watching Ignoring Scheduled Pinned Locked Moved IT Careers prof messer networking vpn security protocols comptia network+ youtube certification
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      scottalanmillerS

      I think that he skips mentioning that PPP, the Point to Point Protocol is not a VPN protocol. Even in the 1990s it was not considered that as it is not virtually private, as a VPN is. It's useful to have mentioned here and the Network+ might require it and it is certainly good to know and understand, but he lists it along with VPN protocols and I didn't hear him ever point out that it isn't a VPN Protocol even though it was the first one mentioned in the VPN Protocol list.

    • mlnewsM

      Network+ N10-006 Video Training by Prof. Messer - VPN Connectors

      Watching Ignoring Scheduled Pinned Locked Moved IT Careers vpn prof messer networking network+ comptia certification youtube
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      1 Posts
      877 Views
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