[c-nsp] Cisco Friends

Mark Tinka mark at tinka.africa
Mon Aug 4 12:10:41 EDT 2025



On 8/4/25 15:40, Simon Leinen wrote:

>> Are IOS XR upgrades still such a pain today?  (We never moved to XR64,
>> and all I know is ASR9001, where the fastest way to do major upgrades
>> still is "turbo boot" with 2+ hours of downtime...)
> In XR7 there's "install replace" which is relatively simple and fast,
> though the .iso images it uses can be quite big (580MB to 2GB depending
> on platform).  So not as quick as IOS, but quite a bit better than your
> experience with earlier IOS-XR versions.
>
>> This is one of the nice bits about IOS, IOS XE, EOS, etc. - "upload one
>> image onto the box, reload, upgrade done" (and on EOS, the flash is
>> actually fast enough to make the "upload" really use available bandwidth
>> to the box...)
> XR7's install replace can install directly from ftp:// URLs.  From what
> my teammates say, copying/writing to flash still seems slow though.
>
> The NCS540 (using IOS-XR) actually reboot faster than the ASR920s (IOS-XE).

A step in the right direction, I suppose...

Mark.


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