[asterisk-users] [OT] switches

2015-02-20 Thread thufir
Pardon, this might be off-topic.  I'm reading:

http://en.wikipedia.org/wiki/Network_switch

For a setup of ~5 agents, would I be wrong in thinking that a generic 16 
port unmanaged switch would fit the bill?

The first model to come up for me in an Amazon search is:

http://support.netgear.com/product/fs116



Is this a reasonable choice?  Would I be wrong in thinking that most any 
Fast Ethernet switch would be fine for Asterisk?



thanks,

Thufir


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Re: [asterisk-users] [OT] switches

2015-02-20 Thread Harry McGregor

Hi,

For a very basic setup it would work, but I would suggest POE at a 
minimum, and vlan support if possible.


Gigabit uplinks, 10/100 for the poe ports

http://www.amazon.com/NETGEAR-ProSAFE-M4100-D10-POE-Ethernet-Managed/dp/B00AUEYX0Y/ref=sr_1_3?ie=UTF8&qid=1424462577&sr=8-3&keywords=netgear+poe

and

Gigabit all ports

http://www.amazon.com/Netgear-ProSAFE-GS110TPv2-Gigabit-GS110TP-200NAS/dp/B00LW9A328/ref=sr_1_5?ie=UTF8&qid=1424462577&sr=8-5&keywords=netgear+poe

-Harry

On 02/20/2015 12:58 PM, thufir wrote:

Pardon, this might be off-topic.  I'm reading:

http://en.wikipedia.org/wiki/Network_switch

For a setup of ~5 agents, would I be wrong in thinking that a generic 16
port unmanaged switch would fit the bill?

The first model to come up for me in an Amazon search is:

http://support.netgear.com/product/fs116



Is this a reasonable choice?  Would I be wrong in thinking that most any
Fast Ethernet switch would be fine for Asterisk?



thanks,

Thufir





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Re: [asterisk-users] [OT] switches

2015-02-23 Thread thufir
On Fri, 20 Feb 2015 13:05:56 -0700, Harry McGregor wrote:


> For a very basic setup it would work, but I would suggest POE at a
> minimum, and vlan support if possible.

thanks for the recomendations :)


-Thufir


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Re: [asterisk-users] [OT] switches

2015-02-23 Thread Bertrand LUPART - Linkeo.com
Hello,

> Pardon, this might be off-topic.  I'm reading:
> 
> http://en.wikipedia.org/wiki/Network_switch
> 
> For a setup of ~5 agents, would I be wrong in thinking that a generic 16 
> port unmanaged switch would fit the bill?
> 
> The first model to come up for me in an Amazon search is:
> 
> http://support.netgear.com/product/fs116
> 
> 
> 
> Is this a reasonable choice?  Would I be wrong in thinking that most any 
> Fast Ethernet switch would be fine for Asterisk?

Yes, this kind of switches would work.

VLAN and PoE support would obviously be better for convenience and security, 
but those are not mandatory.

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Re: [asterisk-users] [OT] switches

2015-02-24 Thread Thufir
On Fri, 20 Feb 2015 13:05:56 -0700, Harry McGregor wrote:

> For a very basic setup it would work, but I would suggest POE at a
> minimum, and vlan support if possible.
> 
> Gigabit uplinks, 10/100 for the poe ports
> 
> http://www.amazon.com/NETGEAR-ProSAFE-M4100-D10-POE-Ethernet-Managed/dp/
B00AUEYX0Y/ref=sr_1_3?ie=UTF8&qid=1424462577&sr=8-3&keywords=netgear+poe
> 
> and
> 
> Gigabit all ports



Hypothetical:  lag, choppy connection, dropped calls.  Of course, I'd 
start with checking logs.  How would I establish that the problem is that 
(some) of the ports aren't gigabit?

Small office, about five agents.



thanks,

Thufir


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Re: [asterisk-users] [OT] switches

2015-02-24 Thread Harry McGregor


On 02/24/2015 09:30 PM, Thufir wrote:

On Fri, 20 Feb 2015 13:05:56 -0700, Harry McGregor wrote:


For a very basic setup it would work, but I would suggest POE at a
minimum, and vlan support if possible.

Gigabit uplinks, 10/100 for the poe ports

http://www.amazon.com/NETGEAR-ProSAFE-M4100-D10-POE-Ethernet-Managed/dp/

B00AUEYX0Y/ref=sr_1_3?ie=UTF8&qid=1424462577&sr=8-3&keywords=netgear+poe

and

Gigabit all ports



Hypothetical:  lag, choppy connection, dropped calls.  Of course, I'd
start with checking logs.  How would I establish that the problem is that
(some) of the ports aren't gigabit?

Small office, about five agents.


If your only running the phone on the port, there is no need for GigE to 
the phone, and many phones only support 100Mbit.


If your running phones with built in switches, a computer off the phone, 
and the phone supports GigE, the GigE will help keep the computer from 
overloading the total available bandwidth, but that is a very low chance 
of being an issue to start with.


GigE all ports vs GigE for your server, and 100Mbit for your phones 
really is not a major difference, but the price difference between the 
two is also very small now days, and you are buying equipment with a 
reasonable service life (3-8 years in my opinion), so it's a balance 
between a few extra $ now, or waiting and seeing if you want it in the 
future, and paying some amount of money to swap it out.


Most of the deployments I have done are with 100Mbit POE to the phones, 
and GigE for uplinks between switches and to the Asterisk server(s)


-Harry


thanks,

Thufir





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Re: [asterisk-users] [OT] switches

2015-02-25 Thread Bertrand LUPART - Linkeo.com
> Hypothetical:  lag, choppy connection, dropped calls.  Of course, I'd 
> start with checking logs.  How would I establish that the problem is that 
> (some) of the ports aren't gigabit?
> 
> Small office, about five agents.

Had to run some small offices with SIP hardphones and basic switches. Unless 
you are doing things wrong (network loops…), your switch shouldn't be an issue 
for such a small network. Depending on the voice codec you use, a VoIP 
conversation if a few kB/s, so don't be obsessed with GigE.

Some hardphones have an integrated switch. Don't daisy chain phones this way, 
and be careful not to invert LAN and PC port.

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Re: [asterisk-users] [OT] switches

2015-02-25 Thread A J Stiles
On Wednesday 25 Feb 2015, Thufir wrote:
> On Fri, 20 Feb 2015 13:05:56 -0700, Harry McGregor wrote:
>
> Hypothetical:  lag, choppy connection, dropped calls.  Of course, I'd
> start with checking logs.  How would I establish that the problem is that
> (some) of the ports aren't gigabit?

Any port with a hardware SIP phone plugged into it almost certainly won't be 
gigabit  :)  Anyway, an uncompressed  (A-law or micro-law)  voice connection 
is only using 64 000 bits per second.  Compressed formats use even less 
bandwidth.  The SIP signalling adds a bit of an overhead, but not much.  
That's probably why most SIP phones have only 100 or even 10 meg ports.

> Small office, about five agents.

To be honest, you'll probably be fine with a £9.99, 8-port TP-link switch -- 
but then you'll need power packs on all your phones  (we power ours this way, 
and find it helps to reinforce the concept of the phones being unlike analogue 
POTS phones).  There will already be mains there for the computers and 
monitors.


If you want a PoE switch specifically to remove the need for a power pack on 
each phone, just add up your requirements for power and ports; double them, to 
allow for the future; then find switches that meet these minimum requirements, 
and buy the cheapest-but-one.


The limiting factor with a switch carrying IP telephony traffic is not 
bandwidth, but routing table entries; and even cheap switches nowadays will 
usually take 1024 entries, if not 4096.


-- 
AJS

Note:  Originating address only accepts e-mail from list!  If replying off-
list, change address to asterisk1list at earthshod dot co dot uk .
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Re: [asterisk-users] [OT] switches

2015-02-25 Thread Steve Edwards

On Wed, 25 Feb 2015, A J Stiles wrote:

The limiting factor with a switch carrying IP telephony traffic is not 
bandwidth, but routing table entries; and even cheap switches nowadays 
will usually take 1024 entries, if not 4096.


Are you referring to the MAC CAM table? Saying 'routing table' and 
'switch' in the same sentence seems confusing.


Do VOIP devices take more table entries than other Ethernet devices? I.e. 
more than 1?


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Re: [asterisk-users] [OT] switches

2015-02-25 Thread Jeff LaCoursiere

On 02/25/2015 09:28 AM, Steve Edwards wrote:

On Wed, 25 Feb 2015, A J Stiles wrote:

The limiting factor with a switch carrying IP telephony traffic is 
not bandwidth, but routing table entries; and even cheap switches 
nowadays will usually take 1024 entries, if not 4096.


Are you referring to the MAC CAM table? Saying 'routing table' and 
'switch' in the same sentence seems confusing.


Do VOIP devices take more table entries than other Ethernet devices? 
I.e. more than 1?




No, and if you have 1024 MAC addresses behind a "cheap" switch, you get 
what you deserve.


j

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Re: [asterisk-users] [OT] switches

2015-03-13 Thread Brian Franklin
If your phones support PoE,

I have had huge success with Zyxel:
http://www.amazon.com/ZyXEL-ES1100-16P-16-Port-Ethernet-Unmanaged/dp/B00
5GRETMM/ref=sr_1_3?ie=UTF8&qid=1426296572&sr=8-3&keywords=zyxel+poe

If you want to go even cheaper, I have successfully used these as well:
http://www.amazon.com/TRENDnet-8-Port-100Mbps-Switch-TPE-S44/dp/B000QYEN
1W/ref=sr_1_10?ie=UTF8&qid=1426296706&sr=8-10&keywords=poe+8-port


Brian Franklin
NTG, Inc. - "Problem Solved"

-Original Message-
From: asterisk-users-boun...@lists.digium.com
[mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of thufir
Sent: Friday, February 20, 2015 1:58 PM
To: asterisk-users@lists.digium.com
Subject: [asterisk-users] [OT] switches

Pardon, this might be off-topic.  I'm reading:

http://en.wikipedia.org/wiki/Network_switch

For a setup of ~5 agents, would I be wrong in thinking that a generic 16
port unmanaged switch would fit the bill?

The first model to come up for me in an Amazon search is:

http://support.netgear.com/product/fs116



Is this a reasonable choice?  Would I be wrong in thinking that most any
Fast Ethernet switch would be fine for Asterisk?



thanks,

Thufir


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Re: [asterisk-users] [OT] switches

2015-03-21 Thread thufir
On Fri, 13 Mar 2015 20:33:13 -0500, Brian Franklin wrote:

> If your phones support PoE,
> 
> I have had huge success with Zyxel:
> http://www.amazon.com/ZyXEL-ES1100-16P-16-Port-Ethernet-Unmanaged/dp/B00
> 5GRETMM/ref=sr_1_3?ie=UTF8&qid=1426296572&sr=8-3&keywords=zyxel+poe
> 
> If you want to go even cheaper, I have successfully used these as well:
> http://www.amazon.com/TRENDnet-8-Port-100Mbps-Switch-TPE-S44/dp/B000QYEN
> 1W/ref=sr_1_10?ie=UTF8&qid=1426296706&sr=8-10&keywords=poe+8-port
> 
> 
> Brian Franklin NTG, Inc. - "Problem Solved"


This is the router/modem gateway the ISP supplied:

http://www.cisco.com/web/consumer/support/modem_DPC3825.html

When I connect one of these switches to the router, that doesn't create a 
double-NAT problem?


thanks,

Thufir


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Re: [asterisk-users] [OT] switches

2015-03-23 Thread Lukasz Sokol
On 22/03/15 03:03, thufir wrote:
> On Fri, 13 Mar 2015 20:33:13 -0500, Brian Franklin wrote:
> 
>> If your phones support PoE,
>>
>> I have had huge success with Zyxel:
>> http://www.amazon.com/ZyXEL-ES1100-16P-16-Port-Ethernet-Unmanaged/dp/B00
>> 5GRETMM/ref=sr_1_3?ie=UTF8&qid=1426296572&sr=8-3&keywords=zyxel+poe
>>
>> If you want to go even cheaper, I have successfully used these as well:
>> http://www.amazon.com/TRENDnet-8-Port-100Mbps-Switch-TPE-S44/dp/B000QYEN
>> 1W/ref=sr_1_10?ie=UTF8&qid=1426296706&sr=8-10&keywords=poe+8-port
>>
>>
>> Brian Franklin NTG, Inc. - "Problem Solved"
> 
> 
> This is the router/modem gateway the ISP supplied:
> 
> http://www.cisco.com/web/consumer/support/modem_DPC3825.html
> 
> When I connect one of these switches to the router, that doesn't create a 
> double-NAT problem?
> 

No, ethernet switch works at lower / physical / MAC layer, NAT is 'above' that;
so as long as everything is OK with your TCP/IP settings everywhere,
a switch is entirely transparent to TCP/IP (or generally, when it's encapsulated
into MAC traffic).

All that happens at a level totally transparent to the TCP/IP stack

In a way, an Ethernet Switch is /the/ network near you, your cables are 'just' 
interconnects.

HTH,

el es




> 
> thanks,
> 
> Thufir
> 
> 



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Re: [asterisk-users] [OT] switches

2015-03-23 Thread David Stahl
Remember that that zyxel 16 port switch is only 8 poe ports. If your phones
are 802.3af or 802.3at, you could look at the ubiquiti line of switches.
On Mar 13, 2015 9:34 PM, "Brian Franklin"  wrote:

> If your phones support PoE,
>
> I have had huge success with Zyxel:
> http://www.amazon.com/ZyXEL-ES1100-16P-16-Port-Ethernet-Unmanaged/dp/B00
> 5GRETMM/ref=sr_1_3?ie=UTF8&qid=1426296572&sr=8-3&keywords=zyxel+poe
>
> If you want to go even cheaper, I have successfully used these as well:
> http://www.amazon.com/TRENDnet-8-Port-100Mbps-Switch-TPE-S44/dp/B000QYEN
> 1W/ref=sr_1_10?ie=UTF8&qid=1426296706&sr=8-10&keywords=poe+8-port
>
>
> Brian Franklin
> NTG, Inc. - "Problem Solved"
>
> -Original Message-
> From: asterisk-users-boun...@lists.digium.com
> [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of thufir
> Sent: Friday, February 20, 2015 1:58 PM
> To: asterisk-users@lists.digium.com
> Subject: [asterisk-users] [OT] switches
>
> Pardon, this might be off-topic.  I'm reading:
>
> http://en.wikipedia.org/wiki/Network_switch
>
> For a setup of ~5 agents, would I be wrong in thinking that a generic 16
> port unmanaged switch would fit the bill?
>
> The first model to come up for me in an Amazon search is:
>
> http://support.netgear.com/product/fs116
>
>
>
> Is this a reasonable choice?  Would I be wrong in thinking that most any
> Fast Ethernet switch would be fine for Asterisk?
>
>
>
> thanks,
>
> Thufir
>
>
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Re: [asterisk-users] [OT] switches

2015-03-23 Thread thufir
On Mon, 23 Mar 2015 10:11:54 +, Lukasz Sokol wrote:

> No, ethernet switch works at lower / physical / MAC layer, NAT is
> 'above'
> that;
> so as long as everything is OK with your TCP/IP settings everywhere,
> a switch is entirely transparent to TCP/IP (or generally, when it's
> encapsulated into MAC traffic).


so how does a client pc find the server if there's no NAT?  by IP 
address?? That makes no sense, to me, if the switch isn't assigning 
addresses.


-Thufir


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Re: [asterisk-users] [OT] switches

2015-03-23 Thread Kevin Larsen
> so how does a client pc find the server if there's no NAT?  by IP 
> address?? That makes no sense, to me, if the switch isn't assigning 
> addresses.

Switches have a MAC table that keeps track of which MAC addresses are on 
which ports. That's how they decide where to route packets.

http://en.wikipedia.org/wiki/CAM_Table
http://en.wikipedia.org/wiki/OSI_model-- 
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Re: [asterisk-users] [OT] switches

2015-03-23 Thread Steve Edwards

On Mon, 23 Mar 2015, thufir wrote:

so how does a client pc find the server if there's no NAT?  by IP 
address?? That makes no sense, to me, if the switch isn't assigning 
addresses.


The 'endpoint' (pc, softphone, mobile, desk set, etc.) 'finds' the 
server's IP address when:


) You configure the endpoint with the IP address or host name of the 
server. This happens either by a web page you fill out on the endpoint or 
a configuration file that is downloaded by TFTP, FTP, HTTP, etc.


) You configure SRV records in your DNS.

I think the old IAXy did some sort of discovery on port , but I don't 
remember if it was device or server discovery.


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Re: [asterisk-users] [OT] switches

2015-03-23 Thread Lukasz Sokol
On 23/03/15 16:37, thufir wrote:
> On Mon, 23 Mar 2015 10:11:54 +, Lukasz Sokol wrote:
> 
>> No, ethernet switch works at lower / physical / MAC layer, NAT is
>> 'above'
>> that;
>> so as long as everything is OK with your TCP/IP settings everywhere,
>> a switch is entirely transparent to TCP/IP (or generally, when it's
>> encapsulated into MAC traffic).
> 
> 
> so how does a client pc find the server if there's no NAT?  by IP 
> address?? That makes no sense, to me, if the switch isn't assigning 
> addresses.
> 
> 
> -Thufir
> 
> 
+1 to what Kevin said, and

there is a protocol running on pretty much every ethernet based network,
named ARP : Address Resolution Protocol, by which ALL the clients learn ALL
the surrounding clients (including the one that is the GATEWAY) MAC/IP 
combinations.

Simplified, the encapsulation of ethernet packets is sort-of

| MAC Header  | IP Header | 
Packet
|[MAC Source address][MAC Destination Address]|[Source IP][Destination IP]|[The 
rest of packet]

[order and number of fields not necessarily real-life, for illustration 
purposes only]

now the MAC source/dest fields are added AND REMOVED as needed when the packet 
passes
from card to computer/router, then from computer/router to card; as the MAC 
fields don't make sense in 
wider area networks; 

'dumb' switches don't participate/snoop in ARP, only store a table of what card 
MAC address they
encountered on source MAC field of packets coming from that interconnect

manageable switches /can/ participate and filter in the ARP process if told so 
and have such option.

HTH,

el es


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