Switches and speed

Hello,
I was just wondering if more switches and routers on a network can increase speed greatly (mainly for internet). My design is
IDU -> 8 portDlink switch -> Pix 501 -network
IDU -> 8 portDlink switch -> cisco 2600 series -> catalyst 2950 -network
i also have other switches (e.g 3com, intex) along the way. Does a mixture of different vendors equipment affect the perfomers of others? If i add more switches and routers and stick to Cisco products can/how can i increase spead?
Thanks
D

Hi D,
The fastest speed you'll be able to achieve is a function of the slowest link along a given path. Adding more devices in the path will not help increase speeds. If anything, it may introduce more delay.
HTH,
Bobby
*Please rate helpful posts.

Similar Messages

Home setup - network switch and 2 Time Capsules

I have an ADSL modem/router (Billion BIPAC 5200G). I have used it previously with wireless turned off. I then used a time capsule in bridge mode so that NAT etc is turned off, and then use it to broadcast wifi and as a backup. It is attached to the modern with ethernet. It worked fine.
I am now in a house with a lot of ethernet ports, linked to a massive hub thing. But it needs a switch to link it all together.
So I am thinking of this setup:
PHONE LINE
to
BILLION ROUTER (Set as a router with wifi turned off)
to
NETWORK SWITCH
to
VARIOUS ethernet enabled devices in different rooms (i.e. printers, Apple TV, TV, Time capsule)
Then I want to use my 2nd time capsule to extend my ground floor network by plugging it in essentially directly into the time capsule via ethernet in roaming mode.
Is this the optimal setup for this? My other idea was to forgo the network switch and do it this way:
PHONE LINE
to
BILLION ROUTER (Set as a router with wifi turned off)
to
VARIOUS ethernet enabled devices INCLUDING the TIME CAPSULE and PRINTER.
then:
To the TIME CAPSULE:
to
VARIOUS ethernet enabled devices INCLUDING Imac, Apple TV and another TIME CAPSULE in roaming mode.
My main questions are: which setup will give me better speeds to all devices. Ie: is the switch even necessary? In my 2nd example, will the first time capsule and printer be available to the Imac.
There seems to be no real advantage to having the TIME CAPSULE in router mode while keeping the BILLION ROUTER as a pass through with NAT off (To avoid Double NAT) except for the guest network capabilities.
If its just simpler to have the network switch, then perhaps that's the way to go. If so: any suggestions on network switches that work well?

It doesn't allow me to select ethernet as an option for internet connection, only dchp, ppoe and one more which isn't ethernet.
DHCP is correct setting. .it will use ethernet but the new AC TC has problems.. it needs a crossover cable with some switches. Or you need to return it and get it replaced as there is something wrong with its wan port.. the new AC model needs a hardware revision and about 3 or 4 firmware upgrades before it hits the status of the Gen4 it replaced.
My questions are: should I connect my time capsules together directly with ethernet using another available port in my new time capsule. I thought my switch would work better. Also, does one time capsule have to be in router mode instead of having both of them in bridge.
Both should be in bridge.. but you can rearrange things to see if any of the other devices works better.
You can use the billion or the old TC.. plug the new TC into those.
Bob is correct though.. the switch is the correct thing for everything to be plugged into .. but in home situation what works is more important than what is best. It if fails in all of them then the WAN port is proven faulty.
Should I be able to use the hdd on the 2nd (older) time machine as essentially a networked hdd for putting movies and music on, and use my new time capsule as the sole backup (occurring both over ethernet for my iMac and wifi for our laptops)
Yes, that is ok.. you just need to get the AC version TC actually working properly.
Give us a few screenshots of things.. that really helps to see.
Click on each unit and show the summary pages.

Profile and Speed Reductions

Hi, sorry for my first post here to be yet another one about slow Infinity speeds but I would really welcome some help and advice. I switched to Infinity from Total Broadband 3 in early November and initial tests showed my line profile for downloads was 37 Mbps with download speeds just under that figure.
After about a month the download profile and speeds dropped to around 32 Mbps which is what the online estimator forecasted when I signed-up. Over the next few weeks the figures gradually dropped further and then appeared to settle at around 26 Mbps. By the end of December the profile and speeds dropped again to between 20 – 23 Mbps and it was at this time that I decided to upgrade to Infinity 2. This was mainly to obtain the unlimited use but I did hope that it might also help return the profile and speeds to their original figures.
I was therefore surprised to find that since Infinity 2 was activated the profile is now only 17 Mbps with download speeds of around 16 Mbps. Upload speeds have remained fairly constant throughout at between 5 - 6 Mbps
I presume there must something wrong somewhere but after trying all the recommended checks and tests I am unable to find anything. The modem is an ECI V-2FUb/I Rev.B and the homehub is an HH3 A. All speed tests have been carried out using an Ethernet wired connection. I have recycled and reset the hub but as often advised on here I have left the modem permanently on and connected.
This is the speed test result from this morning...
Can anyone maybe offer any suggestions? Many thanks.
Keith.
Solved!
Go to Solution.

Thanks for your replies.
I was always reluctant to try recycling the modem but after reading the posts I switched it off and did as suggested. I also switched off the PC and the homehub. After twenty minutes I booted the PC back up and then powered-up the modem. Finally I powered-up the homehub and after a minute or two everything connected together correctly.
Sadly, I then ran a further speedtest and found the results to be more or less the same as this morning. Thanks for trying to help me though..... I do appreciate it.
I have now contacted the mods and will wait to hear from them.
Keith.

ESW Switches and Smartports

Hi All,
Just going through the ESW switches, and it looks like their is no option for 'Server' on these switches (I have noted this on the 2960G's as well).
Is this a shortcoming of CCA, or has this been excluded on purpose. I know that for the 520 and 500 switches it was there.
Thanks!
Chris

John,
I do understand that you can use a server in a non server port... but based on the macro below:
Macro name : cisco-desktop
Macro type : default interface
# macro keywords $access_vlan
# desktop port role
switchport mode access
switchport port-security maximum 1
no macro description
macro description cisco-desktop
queue-set 2
service-policy input general-map
srr-queue bandwidth share 5 5 40 50
switchport access vlan $access_vlan
switchport port-security
switchport port-security violation restrict
switchport port-security aging time 2
switchport port-security aging type inactivity
spanning-tree portfast
storm-control broadcast level 10.0
cdp enable
spanning-tree bpduguard enable
And then this macro:
Macro name : cisco-server-critical
Macro type : default interface
# macro keywords $access_vlan
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switchport mode access
switchport port-security maximum 1
no macro description
macro description cisco-server-critical
queue-set 1
service-policy input critical-server-map
srr-queue bandwidth share 5 5 70 20
switchport access vlan $access_vlan
switchport port-security
switchport port-security violation restrict
switchport port-security aging time 2
switchport port-security aging type inactivity
spanning-tree portfast
storm-control broadcast level 10.0
cdp enable
spanning-tree bpduguard enable
It doesn't set the qos the same ways. I assume we would have a noticable difference in speed to the server, and since the esw's are not ios, I dont' see there is anyway to set these manually.
Now I do realize that these switches are base switches, but in my opinion we are penalizing SMB with substandard options. I got these macro definitions from my CE520-24PC.
Thanks!

9124 duplex and speed issue

Trying to install a new 9124.
The ethernet switch port for the mgmt port of the 9124 is set to full 100 and the 9124 came set to auto auto.
The mgmt port is comming up as half duplex.
When trying to set the duplex and speed of the mgmt port to full 100, it appers to take the change but does not retain it and it still comes up as half duplex.
So it appears that the 9214 mgmt port will not take the change of setting to full 100.
I have tried to change it with the port down but it won't take changes when down.
If I change it while up and save it and bounce the port it reverts back to half when it comes up.
If I make the change and reboot it reverts back.
Any idea how to force the mgmt port to full 100 and get it to stick?

There is one more defect solved in later 5.x releases where 91xx will end up in half duplex for mgmt interface.
Workaround would be to configure both sides to auto.
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCte76880
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Cables and Speed

There is so much different advice about cables that I am confused. Some people say that to get gigabit speeds you need to use Cat6 cables. Some say Cat5e is OK and some say Cat5 is OK for short runs. I want to get the fastest speeds possible. My longest cable run is 25 feet. Do I need Cat6? If I need to get Cat6 cables I will since they will be fairly short.
Also, how can I tell how hast my network is running? I've looked for applications that measure this but haven't found any. Is there any software that will tell me the speed of my data transfers?
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-= Ken =-

Ken:
I have found significant differences among cables from different vendors. After a lot of trial and error, I finally settled on Monster Cable. I've used their Cat 6 cables for 3 years and they have performed flawlessly on my small LAN. I use a Gigabit switch instead of a hub. It provides better performance. I've used Netgear gigabit switches and Monster cables for 3 years without a hiccup. I have no connection with either company except as a very satisfied user.
See http://www.monstercable.com/productdisplay.asp?pin=2178
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Connecting Cisco 2821 Router, Switch, and Cable Modem

Hey everyone,
I am currently in the Cisco Network Academy at my school and just finished CCNA 1. I have a few questions though.
I am purchasing new equipment and that equipment includes:
1-Cisco 2821 2-port Gigabit Router
1-Linksys SE3016 16-Port Gigabit Switch (unmanaged)
1-Cisco WAP4410n Wireless Access Point
1-Motorla SurfBoard Gigabit Cable Modem (no router built in-Just standalone Modem used with Comcast Xfinity High Speed Internet)
1-12U Network Rack (not enclosed)
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If my assumptions are correct, would I do the following set up?
Take the Cable Modem and run a Straight Thru to Port 1 of the Router.
Connect the Switch Port 1 to Port 2 of the Router using a Straight Thru cable (I believe I will most likely have to Subnet a network, won't I?).
Connect Switch Port 2 to WAP using Straight Thru Cable (so I still have WiFi in my home).
Connect all my computers and other devices to the Switch (this includes several PC's/Laptops, two printers that are ethernet, two TV's that are ethernet, an AppleTV and a Blue Ray Player that are both ethernet, and some Cisco Powerline Network Adapters).
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Also, how would I configure the router to work with my cable modem AND act as a DHCP Server so that all of my devices get IP Addresses? I have the Cisco Command Guide Book, but it is confusing to me as of now.
Thanks!
Chris

A good start but a few points I would make.
If you set the clock manually, you may find it resets itself after a router reboot. I would look at pointing it at an NTP server:
#ntp server x.x.x.x
#clock timezone GMT (Assuming you are UK based)
Although not required, I would put a description on each of the interfaces as it may help identify them later if you are not physically in front of the Router.
#interface gi0/0
#description WAN
Same for LAN
You have set up your LAN subnet with a /16 subnet mask which is effectively 10.0.0.1 - 10.0.255.254. This is a large subnet allowing over 65k hosts which is not best practice on enterprise networks. It probably won't cause you any issues but I doubt you will have any more than 254 hosts so personally I would use a /24 subnet (255.255.255.0)
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Firstly you need to define the 'inside' and 'outside' NAT interfaces which is fairly self explanatory:
#interface gi0/0
#ip nat outside
#interface gi0/1
#ip nat inside
Gi0/0 is your outside interface because its facing the Outside world (i.e the internet) and Gi0/1 is your inside interface because its facing Inside your LAN.
Then you need to tell the router which addresses to translate against by first creating an access list:
#ip access-list standard LAN-Addresses
#permit 10.0.0.0 0.0.255.255
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#ip nat inside source list LAN-Addresses interface gi0/0 overload
Oh, I have just noticed that you do not have a 'default route' configured. A router forwards packets by first looking up the destination IP address of the packet (i.e where its going) in it's own routing table. Obviously home routers are not going to have an entry for every Public IP subnet on the internet so they use something called a default route which effectively says 'If I cannot find an entry for this packet in my routing table, use the default route'.
As you are on DHCP and your IP address (and even default gateway) could change on your WAN interface, I would not bother with the next hop address in the default route but rather use the outgoing interface as below:
#ip route 0.0.0.0 0.0.0.0 gi0/0
Hope this helps!

My ipad pauses plays, skips and speeds up music by itsel

My ipad pauses and play my music with a touch of the headphones, it speeds up podcasts and even skips music, what should I do? Is it the headphones (standard apple headphones), or the ipad itself.

Try a system reset. It cures many ills and it's quick, easy and harmless...
Hold down the on/off switch and the Home button simultaneously until the screen blacks out or you see the Apple logo. Ignore the "Slide to power off" text if it appears. You will not lose any apps, data, music, movies, settings, etc.

HT5012 I am having difficulty XMIT/REC text messages to family members using Android phones? I have a 3GB data plan and all switches and buttons are set properly. Any suggestions?

I am having difficulty XMIT/REC text messages to family members using Android phones? I have a 3GB data plan and all switches and buttons are set properly. Any suggestions?

Hello APVzW, we absolutely want the best path to resolution. My apologies for multiple attempts of replacing the device. We'd like to verify the order information and see if we can locate the tracking number. Please send a direct message with the order number so we can dive deeper. Here's steps to send a direct message: http://vz.to/1b8XnPy We look forward to hearing from you soon.
WiltonA_VZW
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Follow us on twitter @VZWSupport

How do I use switch and case statements to fill more than one other field?

Hi all,
I'm new to the community.
I'm trying to make an existing form more user friendly for my coworkers. I want to use a switch and case approach in a drop-down list field so that the selection fills two seperate other fields with different info related to the selection.
I can already do this with one field, but if I add a second target field under an existing case the text doesn't appear there when I make the selection from the dropdown.
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I'm not sure if I will be able to send you the form. There may be too much to redact.
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if
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What would be possible hang ups that would prevent it from working correctly?
Dave
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Screen has a bluish tint after fast user switching and then warning tone

Hi all I'm having a bit of a problem that I hope someone can help me with. First the details, I have a MBP bought in late '07 and running Tiger. I was doing full backups using "Backup" and I also had Safari, iTunes, and Word open. I briefly switched to my other account using fast user switching and when I returned to the original account the whole screen had a blue tint to it. Like the color profile was off. This has happened before and a restart usually cures it, I haven't restarted yet but I am fairly certain it will correct the problem this time too. But is there anyway to prevent this? My second question is the one I'm more worried about. It also has happened before but usually when using more CPU intensive applications. When I went to System Preferences and opened up the display preferences in an attempt to correct the previous problem I heard a very loud tone. Like some type of warning tone, it was loud enough that it startled me. I had iTunes playing and after the tone the music got very quiet but relaunching it brought it back to normal. I'm just wondering is this some type of warning tone? Is it something I should be concerned about? Besides the music everything else seemed unaffected, although the previous times that this has happened usually when using handbrake there was noticeable problems after the tone (like applications crashing). All of these problems are gone after the computer is restarted though. Does anyone have any insight on these issues? Thank you.
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OK I ran TechTool and everything passed except for the volume scan. Then I checked this with Disk Utility and the HD failed for a few minor reasons, like invalid block count. I repaired it using the fsck -fy command in single user mode. The computer seems a little faster now. I don't know if this error is related to the beep in any way, I may try talking to an Apple genius to see if they know. Since it seems like pretty minor errors I'm not too worried about it but it does seem to be happening often. The last time I had this error was when I posted a question here about it which I just checked was on March 1st. So this error happened again after a little more than 2 weeks which seems excessive to me. Any thoughts?

Email Notifications for Switches and Routers

Dear All,
How may I configure switches and routers to send email notifications when link is UP/Down.
We have Switches - ((C3750-IPBASE-M), Version 12.2(25)SEB4) & Routers - (C2900-UNIVERSALK9-M), Version 15.1(4)M3.
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You can use EEM scrip to achieve the same. Just check EEM scripting in the community directory for some examples.
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How to get "fast user switching" and network shares playing nice

I've been alternating between banging my head against a wall and reading every forum I could find to try and get a reasonable compromise between using "Fast user switching" and sharing a folder from a file server. It baffles me how the network share/mount model of OSX/AFP is completely killed by fast-user-switching; this is a big problem with Apple requiring users to be actively logged in to share music/video from iTunes which therefore essentially requires fast-user-switching if anyone else wants to use the computer. (anyone find it odd that you can share files without being logged in, but sharing songs requires an active login for each user who is sharing? Apple: time to make iTunes sharing a service!)
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Apple Method 3) Use mount_afs and specify directly the mount-points. Have each user have their own startup AppleScript which mounts /Groups to a different location (e.g. /Users/Shared/username/Groups) that way they don't conflict with multiple users. On the desktop, set up symlinks from /Users/Shared/username/Group to /Groups so that it will be the same as the client and applications settings will work when synchronized back/forth by portable-home-directories. Will it work, yes it does, but what a bear to maintain. Is this really what I should expect to do just to have multiple users on my desktop and laptop (which again is essentially required now if I want to do any type of iTunes sharing). This can't be what apple expects.
What I ended up doing - the "not quite apple" solution.
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2) Add a line to /etc/auto_master on my laptop "/- auto_mymounts" to reference a new direct map.
3) Create /etc/auto_mymounts and add a single line "/Groups SERVER:/Groups" to create the direct map.
THAT'S IT. Three lines in three files.
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I'm really curious, after all this work. Any other ways to accomplish this?

In my example above, yes I chose to mount the share "Groups" to the top of the root since that is where I put it on my server and I wanted to keep them similar; but that was just my preference, it isn't a requirement. You can export and mount from other directories.

MacBook Pro (13-inch, Mid 2009) - Maximum internal hard drive size and speed?

What is the maximum size of hard drive and speed for an internal hard drive to my Macbook Pro (13 inch, Mid 2009), please?
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Can I use more than one blue-tooth device at the same time on IPhone 4S? Like a wireless headsets and speed and cadence sensor for cycling computer, receive the data and listen music simultaneously

Can I use more than one blue-tooth device at the same time on IPhone 4S? Like a wireless headsets and speed and cadence sensor for cycling computer, receive the data and listen music simultaneously

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Switches and speed

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