[j-nsp] Re: RE2/RE3 and unwarranted reboots

[Hannes Gredler]

On Fri, Jul 01, 2005 at 11:34:45AM +0200, Daniel Roesen wrote:
| On Fri, Jul 01, 2005 at 11:22:17AM +0200, Hannes Gredler wrote:
| > supporting two REs with a different clockspeed opens up two dozens of
| > testcases [ =! "some testing"] just for e.g. graceful RE switchover.
| >   it is not _just_ the change in CPU speed ...
| >   you change a variable in a complex system interaction -
| >   so you either have to fully test it or don't support it;
| 
| Given that the REs communicate over internal ethernet, I fail to see the
| relevance of CPU clock speed in the whole equation.
| 
| Or is my technical information about the dual RE interaction wrong?
| 
| If my assumption is correct, and the REs talk to each other only via
| ethernet and userspace processes... could you give us some insight about
| the possible problems faced with interacting REs with different speeds?

if you were to run the unsupported RE2/RE3 combination you could see
issues of kernel next-hops not getting replicated, our you may see
slave kernel getting stuck during replication etc ... 

/hannes