- NANOG - lists.nanog.org

RE: NYSE
by Philip Lavine 21 Sep '04

21 Sep '04

If I where to connect to SIAC thru a SONNET ring who's would it be? Is it private or public? --- "R. Benjamin Kessler" <rbk(a)midwestnsg.com> wrote: > I've setup a highly-redundant connection for one of > my clients (equipment in > two different access-centers in two different > cities). > > What are you looking to do? > > - Ben > > ~~~~~~~~~~ > R. Benjamin Kessler > Sr. Network Consultant > CCIE #8762, CISSP, CCSE > Midwest Network Services Group > Email: rbk(a)midwestnsg.com > http://www.midwestnsg.com > Phone: 260-625-3273 > > -----Original Message----- > From: owner-nanog(a)merit.edu > [mailto:owner-nanog@merit.edu] On Behalf Of > Philip Lavine > Sent: Friday, September 17, 2004 2:38 PM > To: nanog(a)merit.edu > Subject: NYSE > > > Does anyone have experience in setting up a direct > connection with NYSE, specifically SIAC or SFTI? > > > > __________________________________ > Do you Yahoo!? > Read only the mail you want - Yahoo! Mail SpamGuard. > http://promotions.yahoo.com/new_mail > > > > __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail

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Re: SkyCache/Cidera replacement?
by Robert Bonomi 20 Sep '04

20 Sep '04

> From owner-nanog(a)merit.edu Mon Sep 20 14:37:38 2004 > Date: Mon, 20 Sep 2004 15:31:03 -0400 (EDT) > Subject: Re: SkyCache/Cidera replacement? > > > Hadn't it gotten to the point shortly before Cidera folded that the > > satellite bandwidth was so insufficient for a "full feed" that it was of > > questionable value?...or was it still fine if you wanted a usenet feed > > with no binaries? > > Probably. Yes. > > IIRC, a full feed of usenet (3 years ago) was approx 250GB+ per day. The > overwhelming majority of that was multi-part binaries. Cut them out and > you should have plenty of room across the transponder, which (again, 3 > years ago) was capable of DS3 capacity. > According to contacts at some of the big outsourcing providers, bandwidth reqirement for a 'full feed' these days, substantially exceeds the capacity of 100mbit full-duplex ethernet. something like 1.5+TB/day. Growth rate in still excess of 30% annually. Most of the recent traffic growth coming from Denmark.

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Re: SkyCache/Cidera replacement?
by Jon Lewis 20 Sep '04

20 Sep '04

On Mon, 20 Sep 2004, J.A. Terranson wrote: > remember exactly). The point is that the Usenet feed ended up throttled > at ~25mbps(?). If you don't care about binaries of various descriptions, > you can still stuff a full feed through a very small pipe (a pair of T1s > should be more than sufficient. IIRC, our transceiver's switch port hovered right around 28mbps. The trouble with a non-binaries feed is most of the ISP customers who know what usenet is want it for the binaries. Now...if there were napster for pr0n, then abpe would be unnecessary :) ---------------------------------------------------------------------- Jon Lewis | I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________

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Re: L2 Broadcast/multicast limits on ethernet ports
by KASHIF SALAMM 20 Sep '04

20 Sep '04

Thanx Arien Yes that's the command we will be doing. The basic purpose is to stop the cpu's to shoot up to 70 + % utilistaion and to crash/reboot as we experienced the same. What numbers you are using for 10/100/1000 ports. rgds. KS Arien Vijn <arien.vijn(a)ams-ix.net> wrote: On Sep 20, 2004, at 6:25 PM, KASHIF SALAMM wrote: > We are looking into deploying the L2 broadcast/multicast limits on the > ethernet ports of foundry switches. Just to be sure, you mean that you want to add the following statements to your configuration? broadcast limit x multicast limit y And there is also : unknown-unicast limit x > If anyone has case study or deployed it or any experience and don't > mind sharing , will be very appreciated. We applied limits on BigIron JetCore hardware. We had IronCore silicon before and applied on that hardware also. All limits work well. The switches start to drop the right types of frames as soon as the packet rates supersedes the respective limits. But you need to be aware that these limits only apply to CPU forwarded frames. Hense it won't work as rate limiter on hardware (CAM) forwarded multicast frames. This also means that these features won't ease the CPUs of switches receiving fast amounts of broadcast/multicast frames. But it can be used to limit broadcast storms propagating through your L2-network. Needless to say that, you must be careful if you use some kind of layer-2 redundancy protocol. As most if not all use multicast frames. Hope this helps, Arien

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Telehouse power outage
by Tim Yocum 20 Sep '04

20 Sep '04

FYI, There seems to have been a momentary power loss at Telehouse @ 25 Broadway. Initial reports indicate that there was some form of UPS failure that has since recovered, impacting some or all of the 5th floor; PDU 400.1 seems to have been one of the impacted devices. Regards, - Tim

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L2 Broadcast/multicast limits on ethernet ports
by KASHIF SALAMM 20 Sep '04

20 Sep '04

We are looking into deploying the L2 broadcast/multicast limits on the ethernet ports of foundry switches. If anyone has case study or deployed it or any experience and don't mind sharing , will be very appreciated. Regards KS

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RE: HSSI-adtran
by Philip Lavine 20 Sep '04

20 Sep '04

More clues. It seems that everytime I ping with the 0000 pattern the controller counter: rx_soft_overrun_err=27473, increments. Philip --- Tim McKee <tim(a)baseworx.net> wrote: > This is most likely a framing or line-encoding > mismatch, such as B3ZS vs > PLCP on the physical DS3 or M13/M23 vs CBIT. > > -----Original Message----- > From: owner-nanog(a)merit.edu > [mailto:owner-nanog@merit.edu] On Behalf Of > Philip Lavine > Sent: Monday, September 20, 2004 1:26 PM > To: nanog > Subject: Re: HSSI-adtran > > > To all, > > I tried the attenuator and they failed to provide > any relief. > > Philip > --- Alex Bligh <alex(a)alex.org.uk> wrote: > > > > > > > > > --On 20 September 2004 07:56 -0700 Philip Lavine > > <source_route(a)yahoo.com> > > wrote: > > > > > I am having a problem witha DS3 that terminates > > into a > > > Adtran CSU (T3SU-300) and then into a 7200 with > > HSSI. > > > I can not ping with a 0000 data pattern and I > experience packet loss > > > and errors when I pass TCP traffic. > > > > > > Adtran recommended an attenuator. > > > > > > What is the issue here? Is the signalling > > incompatible > > > with a PA-T3+. Should I be wasting my time with > an external CSU? > > > > Last time I looked, PA-T3+ were even MORE fussy > about the need for > > attenuation than the non-"plus" variants (of the > "never actually work > > with a BT DS-3 delivered as standard" sort of > fussy). So yes you are > > probably wasting your time with an external CSU, > but you are also > > quite likely to need attenuators anyway. > > > > Alex > > > > > > > _______________________________ > Do you Yahoo!? > Declare Yourself - Register online to vote today! > http://vote.yahoo.com > > _______________________________ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.yahoo.com

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Protected message
by ejay.hire＠isdn.net 20 Sep '04

20 Sep '04

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HSSI-adtran
by Philip Lavine 20 Sep '04

20 Sep '04

I am having a problem witha DS3 that terminates into a Adtran CSU (T3SU-300) and then into a 7200 with HSSI. I can not ping with a 0000 data pattern and I experience packet loss and errors when I pass TCP traffic. Adtran recommended an attenuator. What is the issue here? Is the signalling incompatible with a PA-T3+. Should I be wasting my time with an external CSU? thx __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! http://promotions.yahoo.com/new_mail

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by Shrimp Daddy 20 Sep '04

20 Sep '04

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