Re: hi, a question related to AS 49463

2009-09-06 Thread Laurent CARON
On 06/09/2009 15:56, Bin Dai wrote: Hi: I am interested in ur question to nanog about doubting whether AS 49463 is reachable thourgh AS 12670. in ur case, AS 49463 is multihomed. what you want to do,if i am right, is that you wanna make the following things happen: the 213.215.28.0/23 is reachabl

Re: Any RIM / blackberry folks around ?

2009-09-06 Thread Florian Weimer
* Mike Tancsa: > 220 as08.bis.na.blackberry.com ESMTP > HELO marble.sentex.ca > 250 as08.bis.na.blackberry.com > MAIL From: > 451 #4.1.8 Domain of sender address does not resolve This could just be an SPF failure. Try some sender address you control.

Re: Any RIM / blackberry folks around ?

2009-09-06 Thread Mark Andrews
In message <87zl98m0t4@mid.deneb.enyo.de>, Florian Weimer writes: > * Mike Tancsa: > > > 220 as08.bis.na.blackberry.com ESMTP > > HELO marble.sentex.ca > > 250 as08.bis.na.blackberry.com > > MAIL From: > > 451 #4.1.8 Domain of sender address does not resolve > > This could just be an SPF f

Network Ring

2009-09-06 Thread ty chan
Dear all, I am in process of planning ring network to cover 15 POPs in City. Some technologies are chosen for consideration like SDH(Huawei), PVRST+(Cisco), RSTP(Zyxel), EAPS (extreme network) and MPLS(VPLS). The purpose is to provide L2 Ethernet connectivities from POPs to central point (DC) a

Re: Network Ring

2009-09-06 Thread jamie
Step 1: Don't mix vendors. Period. On Sun, Sep 6, 2009 at 11:14 PM, ty chan wrote: > Dear all, > > I am in process of planning ring network to cover 15 POPs in City. Some > technologies are chosen for consideration like SDH(Huawei), PVRST+(Cisco), > RSTP(Zyxel), EAPS (extreme network) and MPL

Re: Network Ring

2009-09-06 Thread ty chan
Only one vendor will be chosen. From: jamie To: ty chan Cc: nanog@nanog.org Sent: Monday, September 7, 2009 11:51:17 AM Subject: Re: Network Ring Step 1: Don't mix vendors. Period. On Sun, Sep 6, 2009 at 11:14 PM, ty chan wrote: Dear all, > >>I am in pr

Re: Network Ring

2009-09-06 Thread Roland Dobbins
On Sep 7, 2009, at 11:14 AM, ty chan wrote: The purpose is to provide L2 Ethernet connectivities from POPs to central point (DC) and ring protection. I'd strongly suggest trying to avoid a large, multi-geography layer-2 topology, and instead work to separate it out via layer-3. Otherwise

Re: Network Ring

2009-09-06 Thread Jorge Amodio
On Sun, Sep 6, 2009 at 11:51 PM, jamie wrote: > Step 1: Don't mix vendors.  Period. Step 2: Hire a network consultant that gets paid for its job.

Re: Network Ring

2009-09-06 Thread Nathan Ward
On 7/09/2009, at 4:14 PM, ty chan wrote: I am in process of planning ring network to cover 15 POPs in City. Some technologies are chosen for consideration like SDH(Huawei), PVRST+(Cisco), RSTP(Zyxel), EAPS (extreme network) and MPLS(VPLS). The purpose is to provide L2 Ethernet connectivitie

Re: Network Ring

2009-09-06 Thread VINAY BANNAI
There are several ring technologies that are interesting but again it depends on what services you are planning to run and what kind of SLA guarantees  you need: - RPR (802.17) : This has quieted down but it is a fairly robust technology giving you packet rings with 50ms, CoS, fairness and upt