rawr
I am trying to figure out a network design question, which requires me to find some switches and VLAN configurations that fit the below requirements for a campus network. Any guidance would be appreciated.
1.Must support PoE, which prevents the mounting of power bricks or using power injectors;
2.Must segment camera IP traffic from the existing network for security reasons;
3.Must support a minimum of 150 cameras;
4.Must provide physical, as well as logical, redundancy;
5.Must provide sufficient bandwidth for full HD support;
6.Must comply with the Cisco hierarchical design model;
7.Must integrate 1Gb uplinks; and
8.Must minimize rack space.
Answer
Well, first off - PoE requires a power injector to put the power on the Ethernet line.
It saves having to wire an AC outlet AND an ethernet cable.
( you could consider wireless IP cameras.. but then you need AC power to the cameras.)
If you need to support at least 150 cameras - plus networking devices - then you need more than just a single /128 host network. get a full 256 host ( like 10.10.10.1 / 255.255.255.0) net,
or bridge a couple of smaller vlans together.
Sufficient bandwidth for full HD support + minimum 150 camera + 1Gb uplinks.. redundant. Use all the fiber you can, and where you cannot - use Cat 6.
I'd look at the overall size of the area you are supposed to cover. Since you need both physical & logical redundancy... (are you going to run 2 Cat6 lines to each camera in case one fails?)
remember the cable length requirements, too.
I would think in a "star" topography, where you gather 32 or 64 cameras feeds on one aggregator switch, - spread out using one or two switches in each quadrant of the campus - ( or spread them out to cover grater areas if you need to) then using 3-5 of these switches, use fiber to bring it all down to one main feed.
Ultimately, you also need to consider the "consumer" of all this data. No human is going to be able to monitor 150+ cameras at one time. even if you cycle them one per second, there is 2.5 minutes of 'blind' time between cycles.
Plus 150 devices all on at all times.. feeding HD quality video.. is going to be an awful lot of bandwidth. You want this separate from the campus network just for that reason.. security is nice too.
If all this stuff is just going to be recorded, then you may want to separate each area of campus with it's own digital recorder. Then, make the data files from those boxes available over the network.
If you have a campus with 150+ cameras, the odds are good that you may need to record multiple feeds on demand.. if you aren't already recording 100%. Make sure you can switch any feed to any of your multiple recording devices.. and that your law enforcement folks are satisfied with the data format
--- before they need to use it as evidence.
If you are going to have 5 or 10 security personnel monitoring all 150 feeds - then I'd bring in a contractor ( like a Cisco partner) who has done stuff like this before. Make them meet the project requirements.
Get a better definition of what your bosses / project consumers mean by the redundancy requirements, and how much rack space they are willing to trade for super-expensive mini-switching equipment.
Well, first off - PoE requires a power injector to put the power on the Ethernet line.
It saves having to wire an AC outlet AND an ethernet cable.
( you could consider wireless IP cameras.. but then you need AC power to the cameras.)
If you need to support at least 150 cameras - plus networking devices - then you need more than just a single /128 host network. get a full 256 host ( like 10.10.10.1 / 255.255.255.0) net,
or bridge a couple of smaller vlans together.
Sufficient bandwidth for full HD support + minimum 150 camera + 1Gb uplinks.. redundant. Use all the fiber you can, and where you cannot - use Cat 6.
I'd look at the overall size of the area you are supposed to cover. Since you need both physical & logical redundancy... (are you going to run 2 Cat6 lines to each camera in case one fails?)
remember the cable length requirements, too.
I would think in a "star" topography, where you gather 32 or 64 cameras feeds on one aggregator switch, - spread out using one or two switches in each quadrant of the campus - ( or spread them out to cover grater areas if you need to) then using 3-5 of these switches, use fiber to bring it all down to one main feed.
Ultimately, you also need to consider the "consumer" of all this data. No human is going to be able to monitor 150+ cameras at one time. even if you cycle them one per second, there is 2.5 minutes of 'blind' time between cycles.
Plus 150 devices all on at all times.. feeding HD quality video.. is going to be an awful lot of bandwidth. You want this separate from the campus network just for that reason.. security is nice too.
If all this stuff is just going to be recorded, then you may want to separate each area of campus with it's own digital recorder. Then, make the data files from those boxes available over the network.
If you have a campus with 150+ cameras, the odds are good that you may need to record multiple feeds on demand.. if you aren't already recording 100%. Make sure you can switch any feed to any of your multiple recording devices.. and that your law enforcement folks are satisfied with the data format
--- before they need to use it as evidence.
If you are going to have 5 or 10 security personnel monitoring all 150 feeds - then I'd bring in a contractor ( like a Cisco partner) who has done stuff like this before. Make them meet the project requirements.
Get a better definition of what your bosses / project consumers mean by the redundancy requirements, and how much rack space they are willing to trade for super-expensive mini-switching equipment.
recomend security cameras?
bill
can you reccomend a good security system that will handle 3 cameras with motion detectors that can be viewed via remote access. please explain if possible.
thanks
Answer
Hello
Now when you ask for cameras with motion detector do you want them to be able to record only when there is motion, or do want them to have an actual motion detector inside of the,.
If you want them to be both a CCTV camera and a working motion detector I suggest Ascendents ASC-380PIR37.
link to the ASC-380PIR37
http://dealer.ascendentgroup.com//specialtycameras/31_1.html
If all you want is a camera that records when there is motion then all you need is CCTV cameras and a DVR. CCTV cameras put out 30FPS per second and send those images to a DVR it is then the dVR job to manage the video (decide when ans how to store the images, and allow you to remote connect to the cameras.)
the problem with viewing your cameras over the internet is most DVR file size is too large. File size is crucial to streaming because most DVRâs on the market record at real time performance (30FPS per channel) so on a 4CH is trying to send 120, 8CH 240, and a 16CH 480 images per second which requires way to much bandwidth even for the most extreme internet connections.
also uses the latest H.264 codec becasue it offers better quality,. While its file size sizes is 30% smaller than MPEG-4, 60% smaller than MPEG-2, and exponentially smaller than MJPEG.
Not all DVR are created equal In fact, there are many options that offer varying performance much like the automobile industry. In the world of DVR's you can find the equivalent of a $10,000 Kia and a $350,000 Ferrari and everything in between. Both have 4 wheels and windshield but that where the similarities end, itâs under the hood that counts. Just like any other consumer electronic in the end you get what you pay for.
If you are buying a DVR and streaming is a high priority I suggest get them to do a demo and connect to the DVR to make sure it is able to stream fast enough for your needs. Most DVR say they have Remote Viewing but it is often to slow and laggy to be of use. Some good DVR brands that I recommend are Bosch, Pelco, Honeywell and Ascendent.
www.ascendentgroup.com (Recommended)
www.honeywell.com
http://www.pelco.com/
http://www.bosch.com
Again I recommend going with a PC based DVR but if you don't want to spend the money I suggest Ascendent's AVP-4120 DVR or Pelco's DX-4000 as they will allow you to view all your cameras instantly from anywhere in the world using either IE. The AVP-4120 will also allow MAC platforms as well as PC to remotely view cameras and it uses the new H.264 codec but no standalone will offer the video streaming or performance a good PC based DVR will.
If you want to see how a good PC based DVR stream bellow are instructions on how to connect to Ascedent's X3L PC based DVR.
Instructions on how to connect to Ascendentâs DVR with Internet Explorer:
1) http://connect.ascendentgroup.com/ (Must be Internet explorer)
2) Install active X control
3) Hit âConnect)
4) DVR type PC
5) DVR code SITE-100
6) User ID Demo (case sensitive)
7) Password demo (lower case)
8) Hit extend config
9) IP address: 24.66.224.223
10) And hit connect
I hope this helps if yo have any other questions feel free to shoot me an email.
williammorales93@ymail.com
Hello
Now when you ask for cameras with motion detector do you want them to be able to record only when there is motion, or do want them to have an actual motion detector inside of the,.
If you want them to be both a CCTV camera and a working motion detector I suggest Ascendents ASC-380PIR37.
link to the ASC-380PIR37
http://dealer.ascendentgroup.com//specialtycameras/31_1.html
If all you want is a camera that records when there is motion then all you need is CCTV cameras and a DVR. CCTV cameras put out 30FPS per second and send those images to a DVR it is then the dVR job to manage the video (decide when ans how to store the images, and allow you to remote connect to the cameras.)
the problem with viewing your cameras over the internet is most DVR file size is too large. File size is crucial to streaming because most DVRâs on the market record at real time performance (30FPS per channel) so on a 4CH is trying to send 120, 8CH 240, and a 16CH 480 images per second which requires way to much bandwidth even for the most extreme internet connections.
also uses the latest H.264 codec becasue it offers better quality,. While its file size sizes is 30% smaller than MPEG-4, 60% smaller than MPEG-2, and exponentially smaller than MJPEG.
Not all DVR are created equal In fact, there are many options that offer varying performance much like the automobile industry. In the world of DVR's you can find the equivalent of a $10,000 Kia and a $350,000 Ferrari and everything in between. Both have 4 wheels and windshield but that where the similarities end, itâs under the hood that counts. Just like any other consumer electronic in the end you get what you pay for.
If you are buying a DVR and streaming is a high priority I suggest get them to do a demo and connect to the DVR to make sure it is able to stream fast enough for your needs. Most DVR say they have Remote Viewing but it is often to slow and laggy to be of use. Some good DVR brands that I recommend are Bosch, Pelco, Honeywell and Ascendent.
www.ascendentgroup.com (Recommended)
www.honeywell.com
http://www.pelco.com/
http://www.bosch.com
Again I recommend going with a PC based DVR but if you don't want to spend the money I suggest Ascendent's AVP-4120 DVR or Pelco's DX-4000 as they will allow you to view all your cameras instantly from anywhere in the world using either IE. The AVP-4120 will also allow MAC platforms as well as PC to remotely view cameras and it uses the new H.264 codec but no standalone will offer the video streaming or performance a good PC based DVR will.
If you want to see how a good PC based DVR stream bellow are instructions on how to connect to Ascedent's X3L PC based DVR.
Instructions on how to connect to Ascendentâs DVR with Internet Explorer:
1) http://connect.ascendentgroup.com/ (Must be Internet explorer)
2) Install active X control
3) Hit âConnect)
4) DVR type PC
5) DVR code SITE-100
6) User ID Demo (case sensitive)
7) Password demo (lower case)
8) Hit extend config
9) IP address: 24.66.224.223
10) And hit connect
I hope this helps if yo have any other questions feel free to shoot me an email.
williammorales93@ymail.com
Powered by Yahoo! Answers
Tidak ada komentar:
Posting Komentar