Another possible choice could be buying MPLS VPN from some upstreams. My .02 Kent
""dre"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > ""Chris Headings"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > We are an ISP in So. Cal. We are gearing up to open other offices in > > bewteen Arizona and Ca... > > > > We are trying to decide what would be the best way of intergrating our ISP > > network...like... > > > > Should we just continue to use our one ASN and have all traffic come back > to > > the Global NOC, or should get new ASN's for each location??? > > Philip Smith's Multihoming NANOG presentation covers disconnected backbones > and ASN usage. > > > Should we be using IS-IS, IBGP/EBGP, OSPF as the protocol to link all > remote > > locations??? > > Yes. If you can afford it (and I can't see why you wouldn't be able to), > you should > have all routers take part in IBGP. Doesn't matter about the IGP, some > people > prefer IS-IS, and others prefer OSPF. GlobalCrossing and AboveNet (and > probably > other ISP's) had to move to IS-IS eventually, and migration is terrible. If > you have > the knowledge or time to invest in IS-IS, I would suggest looking into that > as an option > before your network grows too large. Fortunately, there are a lot of really > good > resources out there today (for both IS-IS and OSPF, actually ;> ). > > > Obviously cost in an issue, but throwing cost out the door, what is the > > ideal way of linking ALL offices, using a good level of redundancy and > great > > preformance... > > Metro Ethernet and wavelength services make purchasing distance bandwidth a > lot > easier. Co-location has also come a long way, making transit and peering > very easy > and cost effective. You are no longer being forced to connect into some > strange, > unknown remote POP via costly (and difficult to provision) SONET circuits > and router > interfaces. Look into your Exchange Points and Metro Providers (CLEC's for > fiber and > optical wavelengths) possibilities. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=43948&t=43836 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
