Comments for bitplumber.net

Comment on How To Configure Jumbo Frames by eprosenx

eprosenx — Fri, 06 Jan 2012 08:18:20 +0000

If my memory serves me correctly, on the 3750 platforms you must set a global setting in order to enable jumbo frames, and then reboot the switch. It will allow jumbo frames on all VLAN’s (which does not hurt the VLAN’s you are just running 1500 byte frames on).

I forget what the setting is off the top of my head.

Good luck!

Here is a show command off a blade enclosure chassis that is similar in design to the 3750′s:

DVA01-SW1#show system mtu

System MTU size is 1500 bytes System Jumbo MTU size is 9000 bytes System Alternate MTU size is 1500 bytes Routing MTU size is 1500 bytes DVA01-SW1#

You can see I am capable of 9000 byte MTU’s.

-Eric

Comment on How To Configure Jumbo Frames by Chandresh

Chandresh — Fri, 06 Jan 2012 08:10:28 +0000

hi,

at our workplace we have just installed a second 3750g in a stack configuration and would like to investigate and test jumbo frames in a our server environment which consists of Windows, Linux, vCenter and our SAN running Storage Server 2003.
Our 3750g’s are both running ip ip services image version 12.2 (55) SE4
We have a vlan 50 and have tried the mtu 9000 and it is not being accepted, we suspect this doesnt work as jumbo frames cannot be enabled on a per vlan basis?

any help much appreciated!

Comment on Republic Wireless Service and LG Optimus Review by Jason Hughes

Jason Hughes — Wed, 30 Nov 2011 08:31:48 +0000

This is a great review. I am a fellow nerd, though more a database guy than a network nerd I understand a lot of how the Amazon cloud works and agree, long term they’ll need dedicated machines. I do know that Amazon offers dedicated instances. So maybe they are running a few of those until they see how big this thing gets. I signed up on the email wait list, so I can’t get my hands on one yet. I am always by a wifi connection and rarely ever talk enough to justify my current phone bill. Anyways, I’ve been searching for a while to find a review of the call quality and not just the pricing structure. Thanks a bunch. Kudos!

Comment on Republic Wireless Service and LG Optimus Review by Brandon Galbraith

Brandon Galbraith — Tue, 29 Nov 2011 05:56:39 +0000

With regards to AWS not being ready to handle VoIP traffic, you should note that Twilio (www.twilio.com) uses a combination of AWS and Rackspace for running their hosted telephony platform/API (with Asterisk actually doing the heavy lifting). While AWS isn’t ideal (despite the SV echo chamber claiming its the solution to every startup’s problems), it’ll work until Republic gets big enough to buy their own gear and colocate it somewhere (most likely closer to where the calls are terminating on the PSTN).

Comment on Republic Wireless Service and LG Optimus Review by Brandon Galbraith

Brandon Galbraith — Tue, 29 Nov 2011 05:54:47 +0000

@Guan Yang Their calls are most likely terminated on SS7 switches managed/provided by Level 3 Communications.

Comment on Republic Wireless Service and LG Optimus Review by Midnitte

Midnitte — Tue, 29 Nov 2011 03:31:12 +0000

Great read, you might also realize that the box is an inside out sprint lg optimus box, I think the manual or something makes a reference to “thinking outside the box”, a nice play on words =p

Pretty cool that it plays music when on hold though, not sure other phones do that.

Comment on Republic Wireless Service and LG Optimus Review by eprosenx

eprosenx — Tue, 29 Nov 2011 00:01:56 +0000

@Guan Yang

Hey Guan-

Indeed, I had the exact same thoughts.

Since the Republic Wireless folks are part of the Bandwidth.com umbrella, I think they already have the call termination part figured out. I was surprised that the VoIP from my phone was being relayed back to Amazon. I figured they already had nodes around the country that my phone could talk direct with.

I am pretty certain they are not running PRI’s with SS7 into Amazon. They must be doing VoIP back out of the AWS cloud to SS7 gateways elsewhere.

-Eric

Comment on Republic Wireless Service and LG Optimus Review by Guan Yang

Guan Yang — Mon, 28 Nov 2011 23:24:16 +0000

It is actually possible to have dedicated hardware on Amazon EC2 if you pay extra, in the sense that no other customers’ instances will run on the same hardware, and if you always pick the largest instance sizes, your own instances are also likely to be alone. And with Amazon VPC you can probably have pretty reliable networking too.

What I’m really wondering about is how the calls are terminated. Without some special deal with Amazon, you can’t just connect run phone lines and SS7 equipment and whatnot to your EC2 instances. Which means that they either have a special deal, or have their phone equipment in what they think is the same datacenter as US-East, or have their VoIP gateway somewhere else entirely.

Comment on Republic Wireless Service and LG Optimus Review by eprosenx

eprosenx — Sun, 27 Nov 2011 04:31:34 +0000

@ILOVEANT
My phone powers off just fine.

An excellent point about the battery, I forgot to comment on that in the post. Anecdotal evidence so far is that the battery life is not so great. Now this could be situational for me (perhaps the nearest tower to my house is not very close), or it could be that the LG Optimus is not so great to begin with, but my fear is that the Republic custom app in concert with the wifi always being active may be weighing on this. I charged it overnight and took it to Eugene for the Civil War game and it is dying now as I am getting home. It sat in the car for the entire game.

-Eric

Comment on Republic Wireless Service and LG Optimus Review by ILOVEANT

ILOVEANT — Sun, 27 Nov 2011 04:00:25 +0000

Did you ever try to power off the phone. My LG from republic wireless can not be powered off. When I power off the phone, it just get reboot again to home screen. BTW, the full-charge battery only last for one day after few calls and slight web surf.