[117225] in North American Network Operators' Group
Re: Network Ring
daemon@ATHENA.MIT.EDU (VINAY BANNAI)
Mon Sep 7 02:32:53 2009
Date: Sun, 6 Sep 2009 23:32:02 -0700 (PDT)
From: VINAY BANNAI <bannai@pacbell.net>
To: jamie <j@arpa.com>, ty chan <chanty_kh@yahoo.com>
In-Reply-To: <876693.5935.qm@web52301.mail.re2.yahoo.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
There are several ring technologies that are interesting but again it depen=
ds on what services you are planning to run and what kind of SLA guarantees=
=A0 you need:=20
- RPR (802.17) : This has quieted down but it is a fairly robust technology=
giving you packet rings with 50ms, CoS, fairness and upto 255 nodes in a r=
ing=20
- EAPS: This technology is more vendor specific (eventhough an informationa=
l RFC exists)
- ERPS (G.8032 - ITU) : This standard from ITU folks supports ethernet base=
d packet rings and is comparable to EAPS
- SONET/SDH : This is tried and tested but do you want to deploy a TDM base=
d technology if most of your traffic is packet based
- MPLS/VPLS : This is a layer 3 based and may not work for pure layer 2 ser=
vice providers. It is tried and tested but does have some operational compl=
exity built-in compared to layer 2 based technologies
I agree with an earlier suggestion made, do not mix vendors if you want ser=
vice level interoperability.=A0=20
Vinay Bannai
=0AEmail : bannai@pacbell.net
--- On Sun, 9/6/09, ty chan <chanty_kh@yahoo.com> wrote:
From: ty chan <chanty_kh@yahoo.com>
Subject: Re: Network Ring
To: "jamie" <j@arpa.com>
Cc: nanog@nanog.org
Date: Sunday, September 6, 2009, 9:52 PM
Only one vendor will be chosen.
________________________________
From: jamie <j@arpa.com>
To: ty chan <chanty_kh@yahoo.com>
Cc: nanog@nanog.org
Sent: Monday, September 7, 2009 11:51:17 AM
Subject: Re: Network Ring
Step 1: Don't mix vendors.=A0 Period.
On Sun, Sep 6, 2009 at 11:14 PM, ty chan <chanty_kh@yahoo.com> wrote:
Dear all,
>
>>I am in process of planning ring network to cover 15 POPs in City. Some t=
echnologies are chosen for consideration like SDH(Huawei), PVRST+(Cisco), R=
STP(Zyxel), EAPS (extreme network) and MPLS(VPLS). The purpose is to provid=
e L2 Ethernet connectivities from POPs to central point (DC) and ring prote=
ction.
>
>>I know you all are in those network for years. can you give me some advis=
es?
>
>>Best regards,
>>chanty
>
