Here is the situation: A T1 router going into an office which then plugs into the firewall box then into the switch. None of these devices support QOS.. Is there some sort of box/device that I can place between the T1 router and the firewall box which will allow me to prioritize voice traffic on this link? I can't change the T1 router to something that supports QOS because it has certain redundant features with an ISDN line which are needed. Any help here would be appreciated! -- Start Your Own ISP! http://www.YourOwnISP.com
I came accross this product the other day. I have no experience with this device, but it looks interesting. http://www.allot.com/pages/solutions_index.asp?intGlobalId=11 "Me" <mylist@lightwavetech.com> wrote in message news:005e01c4e329$5c488f80$6701a8c0@123dial.com...> Here is the situation: > > A T1 router going into an office which then plugs into the firewall box > then into the switch. > > None of these devices support QOS.. > > Is there some sort of box/device that I can place between the T1 router > and the firewall box which will allow me to prioritize voice traffic on > this link? > > I can't change the T1 router to something that supports QOS because it has > certain redundant features with an ISDN line which are needed. > > Any help here would be appreciated! > > -- > Start Your Own ISP! > http://www.YourOwnISP.com > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
Here is the situation: A T1 router going into an office which then plugs into the firewall box then into the switch. None of these devices support QOS.. Is there some sort of box/device that I can place between the T1 router and the firewall box which will allow me to prioritize voice traffic on this link? I can't change the T1 router to something that supports QOS because it has certain redundant features with an ISDN line which are needed. No commercial interest, just a satisfied customer. . . . NetEqualizer from APConnections http://www.netequalizer.com/ -Nate
It's a small hardware device with 3 interfaces. It bridges packets on two of the interfaces and the other interface is a management port. It works by forcing equal access to bandwidth by slowing bandwidth hogging connections. It also allows you to give priority to ip addresses or applications. The price is around that of a new PC, about $1500. You will have to call to see what pricing you can get. The device is small, simple, does one thing and it works very well. You can contact me off-list if you would like more information. -Nate Nate, this is a piece of software? Any idea of the cost? --
Seems interesting enough. I have two questions. a. what are you running on Fedora Core to shape the traffic? b. let's say that you have VPN site to site tunnels from the FW behind the QoS machines towards a branch office and that some of the traffic in the Tunnel has higher priority then other traffic. The QoS device sees it all as encrypted traffic and can't help there. What would you suggest? would placing the QoS machines elsewhere help? ________________________________________ From: rsenykoff@harrislogic.com [mailto:rsenykoff@harrislogic.com] Sent: Thursday, December 16, 2004 9:02 AM To: asterisk-users@lists.digium.com Subject: RE: [Asterisk-Users] QOS Device? I will be putting documentation together shortly on how to build a high-availability QoS setup using 2 spare PCs and 4 NICs. I've been very successful with this approach for a T-1 that shares both Citrix and Video Conferencing + normal web traffic and such. The real key is a combination of packet prioritization with traffic shaping. The QoS boxes I build use Fedora Core 1 and are configured as bridges. This way, you just drop them into the right spot on the network and don't have to change routes or anything. Also, I put ntop on them, so they can monitor traffic statistics to/from the WAN. They use Spanning Tree Protocol (part of the bridge-utils package) to make the solution high availability. All traffic routes through the primary QoS box, but if it fails traffic goes through the second box. I took this approach because I was using old HP Vectras (Pentium 200 Pros) that have old drives in them, which _will_ fail at some point. The Vectras were just sitting on the shelf, and I've got more customized shaping going on than any cookie cutter solution will give you. Here's a simple diagram: ? ? ?----------------- ? ? ?| ? ? ?T-1 ? ? ?| ? ? ?----------------- ? ? ? ? ? ? ?| ? ? ? ? ----------- ? ? ? ? | switch ?| ? ? ? ? ----------- ? ? ? ? | ? ? ? ? | ? ? ? ? ? | ? ? ? ? | ? ? ? ------ ? ?------ ? ? ? |QoS1| ? ?|QoS2| ? ? ? ------ ? ?------ ? ? ? ? | ? ? ? ? | ? ? ? ? | ? ? ? ? | ? ? ? ? ----------- ? ? ? ? | switch ?| ? ? ? ? ----------- ? ? ? ? ? ? ?| ? ? ? ? ------------ ? ? ? ? | firewall | ? ? ? ? ------------ ? ? ? ? ?| ? ? ? ?| ? ? ? ------- ?------- ? ? ? | LAN | ?| DMZ | ? ? ? ------- ?------- ? ? ? ? ? -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks transtec Computers for their support.
On December 15, 2004 11:40 pm, Me wrote:> Is there some sort of box/device that I can place between the T1 router and > the firewall box which will allow me to prioritize voice traffic on this > link?Put iproute2 and tc on the firewall. Limit the traffic out of the firewall to the T1 router to 1500kbps. There are tons of shaping scripts out there but I prefer something I rolled together and use myself: http://www.mixdown.ca/~andrew/dump/rc.tc. I don't profess to be a traffic shaping guru and if anyone has any suggestions on how to make it better I'd be grateful but it seems to work very well for me. I can completely saturate my ADSL uplink (800kbps) without really bad degradation in my outgoing audio (there is some but it's not bad according to the other side).> I can't change the T1 router to something that supports QOS because it has > certain redundant features with an ISDN line which are needed.You could always use a Sangoma A101u and a CAPI card in a Linux box. :-) The HDLC features in the Digium T100P are still being ironed out, IIRC. Sangoma's been doing it for literally years if not coming up to a decade yet. I've got a friend who's been using an older (DSU/CSU-less) version of their T1 card for at least that long. -A.