Upgrade Path Options from 6500 SUP720-3BXL for Edge Routing
mark.tinka at seacom.mu
Wed Jul 30 07:53:23 UTC 2014
On Tuesday, July 29, 2014 04:21:32 AM Corey Touchet wrote:
> Right now my thinking are MX480 or ASR9k platforms.
> Opinions on those are equally welcome as alternatives,
> but I’d love to hear from those with personal
> experiences today vs sales people trying to tell me it
> would route the world :)
Yep, MX480/960 and ASR9006/9010 are the way to go if you're
looking at decent (Intel-based) CPU's, good performance and
good 10Gbps/100Gbps port density, incuding combinations
40Gbps might be a little tricky on these boxes; for that,
looking at Ethernet switches (Nexus, C6880, Juniper EX) are
better options. We don't mess around with 40Gbps - it's
10Gbps or 100Gbps :-).
IOS XR on the CRS and ASR9000 is based on QNX, which suffers
from being only a 32-bit kernel. So even if the hardware
will ship with >4GB of RAM, the OS will only see 4GB (I have
12GB in my CRS's and 8GB on my ASR9001's).
IOS XR on the NCS runs on Linux, which removes the memory
limitation, but it's not clear whether that philosophy will
make it down to earlier IOS XR platforms (CRS, ASR9000).
Whatever the case, I've been following Blackberry for a
while on this, and it doesn't seem like they have any plans
to release a 64-bit version of QNX. AFAIK, their phones are
all 32-bit, so...
Junos has no issue seeing 32GB of RAM (their currently
highest RAM on their RE's), as it's a properly 64-bit OS.
That said, some of the applications that run within Junos
(notably "rpd") are still playing catch-up in terms of how
much memory it can "see", and how well it can use the
multiple cores present on the RE's. A lot of work is going
on in this area, and generally, the later the Junos code you
run, the more enhancements to the software you will see (and
the accompanying bugs, hehe).
I've been testing Junos 14.1R1 in production on a couple of
MX80's and MX480's for some weeks now. No issues to report
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 836 bytes
Desc: This is a digitally signed message part.
More information about the NANOG