Choosing Ethernet Switches
Feb 22, 2007
We're ready to setup 3-4 42U racks for servers and are in need of choosing Ethernet switches. What do you guys use and why?
I'm looked at Cisco switches, but lost in their product forest. I'm looked at Express 500, 2960 and 3750-E models. Is there any more difference (in exception of stacking, cli and hot-swap fan/psu) that I need to consider? Prices differentiate too much.
I'm also looked at Linksys/D-Link business products and they seems to have the same features as Cisco Express series, but only 50% cheaper.
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Nov 23, 2007
I am building an advanced network in a big building which will be used by desktop/printers and backend thin servers, which requires high-available network and consume high bandwidth all this thru categorie 6 cables (RJ-45).
The idea is to build different path with optical fibers and to connect each part of the building with it's own optical fiber to the server room (where we run Microsoft company network servers, SAN, backup, and external access) using a 10/100/1000 switch and optical fiber for long distance.
So I though about using switches which have at least :
48 ports 10/100/1000 (auto negociation)
4 ports 10 gE
for now I will not use many features but with time I could create some trunk, and use some advanced *routing* (switching) features.
As the budget is also not unlimited, I thought about buying :
Edge switch :
§ HP ProCurve 2900-48G J9050A [url]
with X2 extension HP ProCurve 10-GbE X2-SC SR Optic J8436A [url]
Core switch :
§ HP ProCurve 6400cl J8433A [url]
As I am studying any network vendor (but not such as 3com, netgear, dlink, linksys), but more such as HP, Extreme, Cisco, Foundry I am opended to your model ideas for me needs!
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Apr 1, 2007
I am in the market for some new switches and I was going to buy some HP stuff, but a friend of mine recommended 3com....their prices are dirt cheap....any experience with them?
Does anyone have any words to compare and contrast the two based on experience?
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Jul 2, 2008
I just stumbled across mention of bonding two NICs to serve as one. (E.g., 100Mbps NIC + 100Mbps NIC = 'virtual' 200 Mbps NIC, as far as everything on the network is concerned.)
I'd been familiar with the concept for quite some time, but I guess I never really thought it through until just now...
How does this work with switches? It seems to me that the answer should be a flat, "It doesn't." But it seems that it does work. How does the switch merrily map an IP to two different ports? Do the two NICs maintain their MACs? (Wouldn't two MACs to one IP cause even more problems?)
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Sep 12, 2007
to buy some more Layer 3 switches but I'd like to get ipv6 support. I like the Cisco 3550 but it does not support ipv6.
Can someone recommend a switch in the same price range (less than $1400 for 48 ports) that supports ipv6? This will be used for connecting to customer servers.
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Jun 19, 2007
Is there such a switch?
Do cisco do a 24 port 1000Mbs switch that you can control each port speed through a web based software?
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Dec 25, 2007
where I can get the best price for HP switches? Looking for 1x2848 and 1x2650
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Aug 9, 2009
we are a small shop...
Not looking to buy another switch but we have a crapshoot of switches around. Dell 5448,
HP 2910 and a Cisco 3560.
I'd like to keep the the Cisco back in HQ stock since it's a POE switch.
We are colocating just 1 SAN intially. Max of maybe 7-8 Servers total in the future. Not alot of bandwidth and doing L2 traffic only. Any issues with either the Dell or HP in the colo environment from a production standpoint. We have used a couple of Procurves in our environment, and the dell switches were freebies that were part of our last order.
Basically, it would look like this
ASA5510 serving as main headed VPN
2 Branch Offices connecting to it
One L2 Switch. 2 - 3 Seperate Vlans with a trunk port back out to the ASA5510
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Jun 28, 2008
basic layer2 10G, most everything out there has more advanced L3 features which is fine but aren't nessecary, they maybe used at some point in the future.
Currently looking at the cisco 4900M as it appears to be very cost effective at ~$10k/ for the chassis w/8 port 10gb base, + xenpack cost and it isn't a very costly piece of gear.
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Apr 29, 2008
Does anyone use Dell PowerConnect Switches?
If so please list what model number you use and your thoughts as compared to Cisco switches.
Once again I would like model numbers you are using.
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May 12, 2008
Can anyone recommend a product that converts a DS3 to an Ethernet connection?
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Aug 12, 2007
In terms of storage, which will provide faster data transfer?
1. A NAS (e.g. Lacie or Thecus) with 1GB port connected to a gigabit switch
2. An external storage that uses USB 2.0 interface
3. An external storage that uses eSata inferface.
Assumption:
All of it use sata drives under a raid 5 configuration.
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Oct 1, 2007
would you recommend some PCI with 2 or 4 Ethernet 10M ports?
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Mar 5, 2007
I had the chance to work with the summit24 switches, and I personally liked them. It is straight-forward in my opinion for the Web Interface compared to others I have seen and the pricing seems to be reasonable.
I was wondering if anyone has had any experience with any of their switching devices.
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Jul 22, 2008
Say I have my own office to start building out my own "mini" data center.
If I wanted a lot of bandwidth for the most reasonable cost, how do one go about buying bandwidth from various providers? What is Metro-Ethernet vs. say a DS3? I know there is Fractional DS3 (6 to 45mb/s) and then Ethernet services up to GigE. I'd rather not mess with BGP right now either.
If I am looking at 15-20mb/Sec of bandwidth, what would be a good route to go? My budget is about $1500/month for bandwidth and IP Addresses (I need 2 Full Class-C IP Spaces). I also want to be able to turn up speed as needed without a lot of hassle.
Is this a reasonable budget? And where would be a good place to start? Just call up like Level 3 or am I too small potatoes to even deal with?
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Apr 28, 2008
What low-cost Gigabit Ethernet switch would you recommend for providing residential IP services to an apartment complex that is already prewired for copper Ethernet? My only real requirement is that is it a managed switch supporting QoS, capping, and has fiber uplinks.
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Jan 18, 2007
I now have to move on to the question of Ethernet ports in relations to rack mount servers. I have just about ever question answered now. Now my question is about the connection to the web my server will use. Is it better to have a single or a dual Ethernet post?
I see a lot of duals. Here are some of the samples I have read when building my server.
2 x Intel® 82546GB Gigabit Ethernet Ports
Dual Onboard Gigabit Ethernet LAN Ports
Dual Intel® 82541GI Single-port Gigabit Ethernet Controller
Broadcom dual Gb NICs
Intel dual Gb NICs
Broadcom BCM5754, 10/100/1000Mbps
I don’t know which one to look at or get?
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Jun 9, 2008
I was checking out the switch products from Cisco and I noticed that there is quite a few products that been discounted, and I am trying to find correct switches that does traffic shaping on port for inbound and outbound.
I preferred they are 48 ports with 2 Gigabit uplinks, with Enterprise L3 image and it is little difficult to find the correct older models that is being sold on ebay to pick up the correct one.
I am also open to Extreme and Foundry switches as well, but I rather like to stick to one type for deployment, since I am working on the plan to deploy 2 core switches which all edge switches will hook into it.
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Apr 17, 2008
I have inbuilt Ethernet card RTL8139D , but when i install RHEL 4 or 5 , Fedora version the Ethernet card diver not installed or ethernet card not installed but when i install suse linux it working fine without any problem so can any one tell me how to install lan card on Fedora or RHEL5.I have driver in CD but it not working with it.
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Nov 4, 2009
i have recently get this server , we moved to this server in the same datacenter
Linux OS:centos 5.4
Kernel Version(uname -r) 2.6.28.7
Hardware Information:icore7 920 + 12gb ram
Software Version;csf firewall, ossec Intrusion Detection System, rvsitebuilder
Control Panel(if any)whm+ fantastico
yesterday the dc tech logged-in by ssh (root) cause we couldn't connect to the ftp box we keep our backup's (the new box couldnt connect to the ftp got time out)
They fixed it.
Today i got a time out and after 2 reset and restaring of services the server was back again.Then i got this messages and it still coming (3 hours now i get 1 similar message per 5 second )
Code:
Nov 4 12:31:20 gandalf kernel: martian source 217.20.117.1 from 127.0.0.239, on dev eth0
Nov 4 12:31:20 gandalf kernel: ll header: ff:ff:ff:ff:ff:ff:00:1a:4b:3a:7e:23:08:06
Nov 4 12:31:21 gandalf kernel: martian source 217.20.117.1 from 127.0.0.244, on dev eth0
Nov 4 12:31:21 gandalf kernel: ll header: ff:ff:ff:ff:ff:ff:00:1a:4b:3a:7e:23:08:06
Nov 4 12:31:22 gandalf kernel: martian source 217.20.117.1 from 127.0.0.252, on dev eth0
Nov 4 12:31:22 gandalf kernel: ll header: ff:ff:ff:ff:ff:ff:00:18:71:80:07:86:08:06
Nov 4 12:31:22 gandalf kernel: martian source 217.20.117.1 from 127.0.0.244, on dev eth0
Nov 4 12:31:22 gandalf kernel: ll header: ff:ff:ff:ff:ff:ff:00:1a:4b:3a:7e:23:08:06
Also the firewall stopped the port scanning from a server within the same dc.
I checked it on google and the explanation's varies but most say that is a problem of the router/switch or similar.
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Mar 21, 2008
Say a server has 2 gig-e ports on board, and the OS
is using both. Can I still use IPMI feature? Or do I have
to get an additional ethernet card?
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Jul 13, 2007
I've a rack in the datacentre, and actually sharing the ethernet line with another partner's rack.
Something like:
Bandwidth -> Switch 1 -> Switch 2 (partner's rack)
Bandwidth -> Switch 1 -> Switch 3 (my rack)
After a previous uplinks issue, i'm never able to hit above 4Mbps of download speed to my home's cable broadband anymore. I have no idea whether it's because my partner capped my bandwidth from Switch 1, or his usage has increased such that it's affecting my traffic too. I can't be too concerned about it with him, as he's paying the bulk of the bandwidth costs.
For the whole rack, i'm not able to hit above 5Mbps accumulatively, and my normal bandwidth usage is only about 1-2Mbps.
So i'm thinking of getting another line for bandwidth directly from the datacentre to my Switch 3, perhaps starting from just 1-2Mbps only.
How will things improve? Just a silly thought, whether my total available bandwidth can now be 5Mbps + 2Mbps = 7Mbps.
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Jul 24, 2008
We have a few CPanel servers, all with multiple NIC's. (2 Each)
We want to setup Eth0 to be the managment interface (ie. 72.2.24.x)
We want to setup Eth1 to be the Shared / Exclusive IP Nic (ie. 67.69.141.x)
Here is the issue, Eth1 is on a totally different Vlan than Eth0.. thus, isolating DDOS attacks, and any other type of traffic concerns for managment.. But, it also has a different G/W as Eth0.
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Dec 19, 2008
how to check ethernet connections in debian??
my server has 2 nics, how do I view them and their usage uptime etc in debian stable
I wanna see if they are being used randomly (usage on both), or if it hasn't been already setup and I need to do it (found a tutorial on how to do this, but dont' wanna fix it, if it ain't broken)
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Jan 3, 2008
We are in the process of buying a server to co-locate
All the server centre's we look at are trying to charge lots of money for firewalls
We have looked into renting and buying firewalls
but all the bought ones seem to be in the form of 1U
my question is this:
Is it possible to have a firewall that fits inside a 1U rack?
...something like a network card with an inbuilt firewall
does any hardware like this exist or will we need something that takes up a 1u space?
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Oct 3, 2007
how can I change ethernet port speed. For example I want to change 100 mbit to 20 mbit. I m using centos 4.5 final.
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May 14, 2007
I know absolutely nothing about these operating systems and am going to be solely relying on lxadmin or cpanel to manage my website.
However I would like some suggestions as to which OS I should choose (i.e. which is the fastest, most stable, etc.)
Here are the possible choices:
Mandriva
CentOS 4
OpenSuse 10, Slackware 10.2
Debian 3.1, Debian 4.0
Fedora Core 3, 4, 5
what is meant by VPS hardening?
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Jan 4, 2009
Im planning to put up a gameserver with a website for a mmorpg and i dont know how powerfull processor should i choose, what control panel, what operating system, 32x or 64x bit, what bandwith...? I was thinking about choosing iWeb Quad core Xeon, 100mb uplink, Windoes server 64x with cpanel.
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Oct 19, 2008
I've an original post with thread number 727551 which has date got old (forgive me for coming back late). So I decided to post a new thread here. But really thanks for all your helps, and I found I'm lucky to find a good place to ask my questions, as I see lots of valuabe responses when I come back.
I have some further questions about having "multiple domains" with a single hosting plan. Forgive me for not having much concept about this:
1. Does it mean that the "multiple domains" will all be sharing a single IP address (or should I say if I go to Shared Hosting plans, websites from all other people who share the same hosting machine with me will have the same IP)?
2. Would there be negative effect for my search engine rankings of each of these domains, if I have my domains sharing the same hosting (and if they really share the same IP)?
3. In case people know one of my domain name, would there be any way to check for my other domains in the same hosting, so that means they will know all my other websites?
I ask this because I'm thinking to launch different websites on a same niche.
And after looking into different hosting companies and their reviews, I found there are really different (and quite confusing) opinions around. Actually I expect I do not need much at the very beginning. I found there are lots of cheap offers, price as low as $1 per month, but I just afraid there will be problem later on. I'm thinking may be just go to those big and more famous one, say host gator, to avoid any unnecessary headaches later on.
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Jun 17, 2008
I am about to start a website in which I will feature lots embedded video clips from sites like youtube, toudou, etc.
I am new this, so I'm wondering how I can choose a proper web host for my site, so that people can always reliably view the videos and at decent speed. I'm not looking to spend a fortune as this is my first website.
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Jul 16, 2008
Choosing the right host is a very important decision. I've compiled a short list of do's and don't when it comes to web hosting.
1) UNLIMITED features. Rarely trust companies that offer unlimited space/bandwidth etc. as this is blatant overselling. When was the last time you saw an unlimited hard drive?! Companies that offer unlimited hosting features may not be around long and their other services tend to suffer - e.g. support.
2) Free hosting. Be wary of free hosts, particularly ones that seem to be giving far too good a deal to you - they probably are. The Webmaster-talk forums are regularly spammed with free hosting, and one that keeps cropping up is called ********.com. I urge you to ignore this as a highly reputable hosts do not spam forums!
3) Your ACTUAL needs. You might be excited by hosts that offer 5GB of storage space and 1000GB (1TB) of bandwidth for very low prices, but you should at the very least be wary of such companies. Besides the con issue, ask yourself - do you even need such large resources? For most small companies and individuals starting up, a maximum of 500MB web storage space and roughly 5GB bandwidth will be adequate. Once your site is up and running, you will be able to see whether you do need more or not and if necessary, you can upgrade. Some hosts (hostmonster.com being an example) seem to offer incredible packages for very low amounts of money. However, companies like this are often unreliable and may end up throwing you off their server if you start using these extreme amounts of resources. See tip no. 5 for solution.
4) Do your research. It's very important to do adequate resource on whichever host you choose: don't just take their word for everything. Check what the technology experts are saying on the issue (e.g. look through reputable technology magazines for reviews). BE CAREFUL WHEN SEARCHING REVIEW SITES - THEY USUALLY EARN COMMISSION FOR EACH SIGNUP SO WILL PUSH THE HIGHEST BIDDING HOST!! While it sounds infantile, type queries like "..... .com sucks" and also search through their own support forums (assuming they have them) to see how quickly issues are resolved. Try contacting their support or sales departments with questions to get a good perspective of their response times. Remember, if their sales department take a while before they have your custom, imagine how long they may take when they do have your custom!
5) When your needs outweight most plans. If you've outgrown your current plan and you are using very large resource amounts, it may be time to think about renting out a VPS (Virtual Private Server) or a Dedicated Server. I emphasize that this will not be necessary unless you are receiving a lot of visitors (traffic) and unless you are storing a very large amount of data (e.g. hundreds of photos, movies or software downloads). VPS' are now relatively cheap and combine reliability with speed and of course more space and bandwidth. A typical entry VPS may offer you 10GB storage and 100GB bandwidth. If you have extreme needs and you are already running a very busy site, you may even contemplate renting out a Dedicated server from a hosting company. Dedicated servers are computers entirely dedicated to your own web site and are very reliable (if you choose the right host) but are overkill for the vast majority of people.
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