Gigabit switch and home hub

Hi,
Can anyone with a similar setup let me know if this will work, I'm due to have BT installed next month and due to where the sockets are located in my house compared to the current Virgin setup I'm going to have to do a bit of re-wiring so was wondering if anyone knows if this will work.
Devices on my home network are in two main locations and I'm trying to minimise the number of long cable runs.
Could I have in one location:
- The home hub and modem
- Connected via cat5 a linux server to the home hub
In a second location I have
- things like TV, media streaming box etc
Would it be possible to run a cat5 cable to a switch like this http://www.netgear.co.uk/business/products/switches/unmanaged-desktop-switches/gs108.aspx from the home hub
And would devices on the switch be able to see my linux box? My thinking is that the swich will autosense an uplink to the hub and let the hub provide things like dhcp.
Hopeing its not that mad a setup and someone has something similar!

There is no reason why this should not work but there are a few things to look out for:
1. You will need a crossover cable between the hub and the switch unless either device supports auto MDIX (the ability to detect what is on the other end of the cable and switch to either crossover or straight as required).
2. Speed and duplex issues are often an issue in mixed vendor environments. Setting everything to "auto" on both ends is not always the best bet as autonegotiation often fails. Best to "hard set" both ends to 1000 full duplex if possible.
As for the DHCP bit, assuming the stuff above is setup correctly then DHCP should work fine and your other devices should be able to see your linux server assuming you have setup the IP address correctly.

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Location of Openreach modem and Home Hub (BT Infin...

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XBox 360 and Home Hub 2 - NOT wireless

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Hi welcome to the forums,
The forums are customer to customer in the first instance, Only the mods (BT) will ask for personal information through a email link. Would you mind posting your Hub stats & BT speed test results this will help all with diagnosis-
To post the full stats from your router
for home hub - 192.168.1.254
Navigate to ADSL Settings or use the A-Z at the top right
Click on More Details and then post the results.
Run BT speed tester and post the results from http://speedtester.bt.com/
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Windows Home Server 2011 and Home Hub 3

Hi All
Im getting a problem at the moment with my Home Hub 3, when configuring the router setup within WHS i get an port forwarding error.
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If BT used this forum to reply to problems/issues etc it would no longer be a site for BT USERS to talk to each other. BT does say that you can read advice usually good if you access this forum for help . But unless taken up by a Moderator this advice isnt "official" in the sense that BT agrees with every word. So in reality its "unofficial" but still mainly GOOD advice. Can you imagine if it was an site for BT personel to answer the public? it would crash from the many postings and it would be a 24/7 job for official BT employees. And dont blame BT many other large companies are VERY hard to contact DIRECTLY. Try Microsoft they direct you to --LOG ME IN- in India where after an hour of conversation the operator says -SURE!!! WE can help you ---and that will be £150 -PLEASE. Try contacting Yahoo direct . No chance Many other big companies Wordwide do the same.

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Can i connect a Time Capsule to my BT Home Hub but still having the home hub as the only wireless router
Yes.
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High Latency between computer and home hub

My internet began to run very slow last night with disconnects lasting about a minute. I have used BT for many years with very few problems.
I ran a speed test through the bt site and it reports my line is working correctly.
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C:\Users\Neil>tracert www.bbc.co.uk
Tracing route to www.bbc.net.uk [212.58.246.92]
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14 308 ms 300 ms 298 ms bbc-vip013.cwwtf.bbc.co.uk [212.58.246.92]
Trace complete.
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hi there was a problem in the Manchester area earlier today but that is now resolved
the first hop to your home hub is very high typically <1 not 305 may be worth trying to check if your network card drivers are up to date also try if you can another cable also try another port on your hub just as some extra suggestions
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Only had BT 2 days and Home Hub stopped working (H...

I got BT infinity on friday, and this morning my Home Hub 3 stopped working.
It stays on power light (orange) - won't reset/and does so every time i re-power
So now im without wireless internet as i need a VDSL router right? Still awaiting for BT to reply to me
Having to use ethernet directly to modem to get access.
Any thing else i can try to solve this? Or will i need a new router

azza1989 wrote:
Still no reply them by email now after 24 hours. It's not possible for me to call atm
So no wireless internet for a while I guess
Is there any way to use my old netgear router for now?
I tried but failed, others say I need a VDSL router
Who did you e-mail?
The help desk will have to be contacted by phone.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Bt home hub 3 and home hub 2

Ok new to this what I trying to do is get a better wifi signal down stairs I have tried a wireless extender kit.
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This is the option you need on the menu, using a HH3a as the master.
If you use a version b, then you will not be able to roam between the two wireless networks.
Use a spare BT Home Hub as a wired wireless access point (HH1, 1.5, 2.0 and HH3 version a only)
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Cable length between modem and Home Hub 3

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You can run an ethernet cable for up to 100m before you have any problems.

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Difference between downstream speed and Home Hub 4...

Using a number of speed checkers I am getting a downstream speed of approx 7mb to my router but only 1.9mb from my home hub4 to my devices. This is irrespective of whether I connect to my router by cable or wireless. I have reset my router and have disconnected all telephone cables from their sockets for about 40 minutes before reconnecting and resetting the router. Any suggestions as to why this should be and how I can improve this?
Solved!
Go to Solution.

The mods will post a contact us link probably tomorrow now.
After completing the email NOT PM then you join a queue of other customers waiting for mod help. The mods will get back to you in 3/5 working days either by phone or email
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Bt infinity 2 and home hub 4 rubbish.

New customer of 3 weeks and already had hh4 replaced and also lost phone and broadband for 6 days. When I did connect ipad the range was only about 10 feet. Now struggle with ipad connecting. Infinity tech line helpful but don't understand frustration of my problem. Had none of this with sky. Wish I had stayed with them.
Why don't they just send an engineer round without wanting to charge me £99.
Currently connected to neighbour broadband to write this post.

Do you have "Smart" wifi enabled on the HH4? If not then try it. If yes then try manual settings and choose a wifi channel that is free of other networks (or has lowest interference). InSSIDer is a good utility to use to check local wifi networks. Of course the HH4 itself may be gubbed.
I get a little better wifi coverage with the HH4 than I did with a TG582n from my previous ISP.
Cheers,
Ian
Thanks
Ian
http://www.siteguru.co.uk/be/ADSL2PlusForDummies.pdf - Having ADSL issues? Then read this PDF
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Modem and Home Hub positioning

Will the installation engineer be happy to run either the master-modem or modem-HH cable from the master socket upto an attic room? I have my existing modem/router/wifi there as most of my kit is there and the guidance is that wifi is best broadcast down (we also have a homeplug circuit to reach where the wifi still doesn't).
If he/she won't, I presume I could move the HH afterwards and use a Cat6 or 7 cable?
Thanks.

you could ask the OR engineer to run a data extension from your master socket...and position the data extension socket where you wanted it,run the modem and HH3 off of that,then you will need less cable of your own, also CAT 5e cable is suitable for your needs.
Q. There is smoke coming out of my open reach box... so can I have a new one.
A. Sorry sir, The fault is showing at the exchange so your box should be ok.
BRING BACK UK CALL CENTRES!!!!!

Airport wifi problems with uverse and gigabit switch resolved

I think there is a bug in airport firmware 7.6 with how spanning tree works in addition to problems with the Uverse router. Having an Airport with a uverse 2wire 3801 and gigabit switch will not work. Putting the extreme in NAT mode with DMZ plus behind the uverse resolved the problem.
Network configuration:
Uverse 2wire 3801 router
    3801 provides prioritization for upstream traffic so skype and VoIP work better when doing a lot of stuff on Internet
Airport extreme firmware 7.6
two airport express 802.11n hardwired to extreme. Set up in bridge mode. All access points have same SSID "create a network" to enable roaming. Ignore anything to do with extending a network. firmware 7.6
two gigabit switches
    Netgear GS608 - 8 port gigabit switch
    Trendnet TEG-S80g - 8 port gigabit switch
    100BT 5 port switch - did not figure into problem
Three Uverse set top boxes wired on Ethernet. They have to be wire directly to the 2wire box to work correctly. See: http://forums.att.com/t5/Features-and-How-To/At-amp-t-U-Verse-modem-setup-Airpor t-Extreme/td-p/2300785
However, you need to be careful to place your own PCs and other internet devices on the network created by your gear (airport extreme in your case), but keep AT&T's set top boxes for the IPTV services IN FRONT of your own router - so they remain on AT&T's provided network.
So it would work like this ...
Network 1: 2wire RG (4 lan ports) -> Any Set tops, and to the WAN port on your AirportExtreme
Network 2: Airport Extreme LAN ports -> to any computers or internet devices (but not AT&T set top boxes).
The RG prioritizes the traffic for your Uverse Voice and your Uverse TV ahead of internet data traffic, as it rationalizes data heading out of your home. If you place your own equipment in that equation (like putting AT&T set top boxes behind your Airport Extreme) the performance and function of your AT&T set top boxes could really flake out on you.
Symptom:
    Everything would be working fine, then intermittently all my wifi access points would stop working. ~6,000 ms latency, dropped packets. Ethernet worked fine. Here is an example of my macbook pinging the extreme when associated with the extreme over wifi with a strong signal.
ping: sendto: Host is down
Request timeout for icmp_seq 23
Request timeout for icmp_seq 24
64 bytes from 192.168.1.64: icmp_seq=25 ttl=255 time=267.051 ms
Request timeout for icmp_seq 26
Request timeout for icmp_seq 27
Request timeout for icmp_seq 28
64 bytes from 192.168.1.64: icmp_seq=26 ttl=255 time=3402.599 ms
Request timeout for icmp_seq 30
Request timeout for icmp_seq 31
Request timeout for icmp_seq 32
64 bytes from 192.168.1.64: icmp_seq=30 ttl=255 time=3060.673 ms
64 bytes from 192.168.1.64: icmp_seq=34 ttl=255 time=24.115 ms
64 bytes from 192.168.1.64: icmp_seq=35 ttl=255 time=31.056 ms
64 bytes from 192.168.1.64: icmp_seq=36 ttl=255 time=39.828 ms
Root cause:
    It looks like the 2wire 2801 router has a problem with spanning tree when interoperating with gigabit switches and airports. There is interplay with the airport.
I did not have this problem until the 7.6 airport firmware. I had been using the Netgear hub for about a year with the extreme in bridge mode. I added the Trendnet hub and upgraded airport firmware at the same time which made fault isolation difficult.
Problem recreation:
Set up airport expresses hard wired to extreme
Connect gigabit switch anywhere to network
Everything OK
Dettach one computer from wifi then reattach, then all wifi stops working. It takes a few seconds for the problem to propagate.
Ethernet still works fine
Problem Resolution:
Connect to 2wire with ethernet
Set 2wire route to have subnet as 192.168.2.x
Set extreme in NAT mode behind 2wire. It will complain about double NAT. Override the warning. Set the subnet to 192.168.1.x so you don't have to change any static IP addresses. Note that 2wire uses 192.168.1.254 as default route whereas airport uses 192.168.1.1.
I set DHCP to start at .10 to leave the lower addresses for assigning static IP addresses to computers I want to expose outside the firewall.
Go into firewall settings. Select airport extreme. Select the bottom setting which is "DMZ Plus". When you go into the airport extreme settings, you will now see that it has the uverse public IP address on its WAN port. NAT port mappings work fine on the extreme behind the 2wire router.

Keeping this very short here is a summary of the actual problem and solution to allow your Apple Airport Extreme to run in Bridge mode on the same subnet as your uVerse settop boxes (if your Layer 2 switch is configurable).
Devices: Uverse, Cisco SG300, and Airport Extreme
uVerse uses Multicast to broadcast video streams between the uVerse network to the settop box, and from settop box to settop box.
X number of Multicast Groups are created based on X number of settop boxes you have. You can see the multicast definitions by logging into the webinterface of the iNid. Each settop box is a member and can choose to display a broadcasted TV stream or not.
Multicast membership is setup by the use of ICMP messages for IPv4 (MLD for IPv6). Each of the settop boxes become members of each others multicast group by reporting up to the iNid (MultiCast Proxy).
In an ideal world a layer 2 switch will track these memberships and only forward a broadcast packet to the ports on the switch to which the settop boxes are connected to. The switch would do these via snooping on the ICMP packets. Most switches by default do not do this by default and simply forward the broadcast packett out every one of it's switch ports.
Here in lies the problem. Problem is that the Apple AES doesn’t do ICMP snooping / filtering and floods the wireless network with these broadcast streams.
In order to fix this you must turn on ICMP snooping and filtering on the switch (or buy a switch that does this). I have a Cisco SG300 and list out the configuration below.
Other notes:
Ensure that all Media renderers (settop boxes) and servers are wired directly off the switch and not attached to any of the Airport Express ports. This way no media transverses the Airport (only control point traffic goes through the WiFi - which is fine). Obviously if the IGMP snooping switch sees any client requesting Multicast streaming traffic on the same port as the WAP, it will add that Multicast address to the forwarding table for that port, and then, yes it could get flooded.
Remember, you need to allow some Multicast traffic through your WAP to allow UPnP discovery to work (assuming that you will be using Wireless control points.)
Read the Multicast chapter in the SG 300 switch Admin Guide as it explains things very well.
Setting up multicast on the SG300s using the WebUI:
1. Multicast/Properties/
Tick enable Bridge Multicast Filtering Status for VLAN 1, and
set the Forwarding Method to IP Group Address for both IPv4 & IPv6.
2. Multicast/ IGMP snooping/
Tick enable IGMP snooping status then select and edit the entry and ensure that IGMP querier status is ticked.
It's essential for IGMP snooping to work that there must be at least one active IGMP querier on the network - if more than one is enabled, they will carry out an "election" to decide which one should be active (normally the one with the lowest IP address.)
3. Multicast Router Port
Set whichever port that is connected to the uVerse iNid to Status which means that it the uVerse router connected to this port is the Multicast Router
4. Multicast/ Unregistered Multicast
set all ports to Filtering. (The default is Forwarding.)
There are a lot of other variables within all the above - the defaults are OK, you should probably leave them alone!
In the config file you would then expect to see the above appearing as something like this:
ip igmp snooping
ip igmp snooping vlan 1
ip igmp snooping vlan 1 immediate-leave
interface vlan 1
bridge multicast mode ipv4-group
bridge multicast ipv6 mode ip-group
interface range gi1-10
bridge multicast unregistered filtering
ip igmp snooping vlan 1 querier
ip igmp snooping vlan 1 querier address <IP-Addr>

Gigabit switch and home hub

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