IOS-XR is running on CRS, GSR and ASR9000. From my point of view, there are no plans for IOS-XR on 7600 platform.
There is no possibilites to run IOS-XR on other platforms as listed above.
IOS-XR has two main SW components, a platform-independent (PI) and and a platform-dependendent (PD) code.
So, IOS-XR image from CRS is not running on GSR or ASR9000 verse vesa.
I'm not sure I'd be so quick to blow it off.... The 7600 has really good traction within service providers, which is where you're going to get the biggest push for XR.
So while nothing has been publicly announced about it, I'd say there's definitely a possibility for it!
Although, without announcement, I wouldn't be holding my breath for it either.
Thank you for your input Scott. 7600 is hugely popular in the SP networks I have worked in and it would be interesting to see whats Cisco's vision about this box and XR, although I understand there might be some platform architecture constrains...
The funny thing is, every time that you mention that something "could" happen it does tend to happen!!! Why would that be?!
No XR on 7600.
You need ASR9k, 12k or CRS-1.
Interesting is the announcement of 7600er simulation. I'm not aware about any 7600 simulator. If there is a simulator for 7600, than important is to know for which 7600 HW components. For instance, ES20+ for instance is supporting different functions like other line cards - e.g. L2VPN capabilietes and configuration is different.
I'm doing all IOS stuff on 7200 @GNS3. For the rest I have my XR devices in my lab ...
There has been a lot of discussion on the 7200/7600 routers using simulation, basically it comes down to IOS compiled for UNIX platform which does not simulate any specific hardware other than Ethernet (AmdP2) and Serial (M4T) interfaces.
If you're using IOS 12.2SR than you're able test all the features that are listed on the blueprint, at least as far as IOS is concerned.