Just speaking from personal experience here. We provide wireless service to hundreds of customers and are quite familiar with Clear's network as well. It's -WIRELESS- not WiMAX as a specific technology that is the root of the issue, it's a heavily shared medium and susceptible to packet loss, latency and jitter all of which will cause poor performance on session based connections such as ssh, SIP, RDP, etc. Transactional based traffic such as HTTP, SMTP,etc, don't suffer from this.
Tyler Booth // President ph. 503.548.2000 | fx. 503.548.2002 921 SW Washington St, Suite 224 Portland OR 97205 On Jan 20, 2009, at 11:57 AM, Conor Todd wrote: > *ahem* > > I regularly SSH through tunneled connections to the company I'm > working for, and those sessions stay up, even when I bounce the > tunneled connection (drop it and re-connect). I find it difficult > to believe that WiMAX is the sole source of the problem here, if > indeed packets are having trouble getting through. > > - Conor > > On Tue, Jan 20, 2009 at 8:56 AM, Tyler Booth <[email protected]> > wrote: > As with any type of wireless connection (licensed or unlicensed), > WiMAX is more susceptible to jitter, latency, packetloss, etc that > can cause session based connections to behave badly. Web browsing, > POP, SMTP, etc are all transactional in nature and more tolerant of > latency. > > If your session based connections are important to you, DSL is a far > superior technology as there is no shared medium with the exception > of the backhaul which in most cases these days is fiber and has > plenty of capacity. > > Tyler Booth // President > ph. 503.548.2000 | fx. 503.548.2002 > 921 SW Washington St, Suite 224 > Portland OR 97205 > > > On Jan 19, 2009, at 5:54 PM, [email protected] wrote: > >> >> I've been having my ssh sessions hang regularly since switching to >> Clear's >> WiMAX Home service. Console-based IMAP+SSL sessions also hang. >> Hangs >> occur anywhere from 5-25 minutes into the session, usually quicker if >> idle for several minutes. I've added the following to my >> ssh_config file >> in attempt to fix the issue: >> >> ServerAliveInterval 15 >> >> It seems to help some. My setup is simply a NetBSD laptop connected >> to the Motorola CPEi150 via CAT5. The CPE does DHCP & NAT; WiMAX >> connection uses dynamic IPs, however my IP hasn't changed in >> several days. >> The NIC's MTU is 1500. Is there something else I can do to fix this? >> Plain old web browsing seems to work okay. >> >> Regards, >> Jeff >> >> ---AV & Spam Filtering by M+Guardian - Risk Free Email (TM)--- >> >> >> >> >> > > > > > > > --~--~---------~--~----~------------~-------~--~----~ The Personal Telco Project - http://www.personaltelco.net/ Donate to PTP: http://www.personaltelco.net/donate Archives: http://news.gmane.org/gmane.network.wireless.portland.general/ Etiquette: http://www.personaltelco.net/index.cgi/MailingListEtiquette List information: http://lists.personaltelco.net To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] -~----------~----~----~----~------~----~------~--~---
