Hi,
>
> Besides that we have been very happy with the 9906's and IOS-XR 64bit.
Similar situation here. We ordered our first ASR9906 back in August 31, 2017
when it went FCS, received it in November where it was shipped to us with 6.3.1.
We took a really long time to put this device into production, due to delays on
the new facilities we were commissioning; by the time we placed it into
production in July 2018, we launched with eXR 6.4.2 on two ASR9906s.
So far, for our relatively basic use cases (igp, bgp, mpls, l2vpn, l3vpn), eXR
6.4.2 has been surprisingly stable. The only bug we ran into was a superfluous
one where Cha-FPGA will refuse to FPD-upgrade on one of the RPs. Cisco
provided an SMU which fixed the issue.
I also have an ASR9901 running eXR 6.4.2 for doing some peering -- so far so
good. The only superfluous difference I saw with ASR9901 is that 9901 does not
accept deprecated show bgp commands ('sh ip bgp' is no longer valid, you have
to type 'sh bgp ipv4 unicast'), even though it's running same eXR 6.4.2
version. On 9906 running eXR 6.4.2, deprecated BGP show commands still work.
With eXR 6.4.2, we also began rolling support for Large BGP Communities on
route-policies. This is working well and works backward-compatible with
classic BGP communities within the same RPL policy, so no problems so far.
So overall, we've been happy camper with eXR 6.4.2 on ASR9K platforms in
general. I do have a new box coming with 6.5.15 (Lightspeed kit), so we'll see
how that goes when the order ships next year.
I'm not sure that I could sing the same happiness about IOS XE platforms lately
though (ASR1002-HX in particular)... been having lot of stability issues & bug
hits on XE platforms so far. Even recent IOS XE code for ASR920 is starting to
get really annoying (e.g. mpls fast-reroute completely broken on 3.16.07S,
etc). ASR1002-HX only supports new unified (Everest/Denali/whatever that is)
code and the box is crashing after placing 9Gb/s of traffic onto it (never
crashed during burn-in sit). TAC is suspecting HW issue and sending RMA, so
we'll see.
I feel like first generation ASR920s running 3.16.04S is the most stable ever
for 920 platform. For now I'm afraid of touching the new 12x10G ASR920s that
just came out.
James
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