On Friday, October 01, 2010 10:48:57 pm Per Carlson wrote: > The CRS-1 isn't *that* new any more.
I know, I meant in terms of its evolution from a core to a peering to an edge platform. Not just the CRS, but also IOS XR. It's been around a while, but still making in-roads and still developing. I've always had concerns about earlier versions of IOS XR being appropriate (or not) for edge applications. I will say 3.9 is much better than earlier versions, but we still think this is overkill for a CRS. Perhaps an ASR9000. But hey, YMMV :-). > We did an upgrade from 3.5 to 3.6 on our CRS-1's last > winter (northern hemisphere). At that time Cisco > Advanced Services didn't recommend using any newer than > 3.6. Neither 3.8 nor 3.9 didn't add any "must have" > features, and 3.6 had significantly more exposures in > the wild (read: used in production). There's a bunch of features we've been accustomed to in JUNOS and IOS that we needed in IOS XR. It's probably a good thing we boarded the CRS bandwagon late, which made transitioning that much less difficult, e.g., the ability to ignore an IS-IS ATT bit, e.t.c. > It became a lot better when Cisco pulled the plug on > ASR14k, and instead ships the LC's to the CRS. Yes, those FP40 forwarding boards offer great value. Mark.
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