Regarding high availability features on EX, we currently have support for capabilities such as GRES today, as well as the usual network protocol level HA functions. Starting with our next software release (10.4), we will enable NSR for OSPF as well as a non-stop software upgrade function on EX8200 that will allow the chassis software to be upgraded without a system-wide reboot (each line card will restart individually, allowing network connectivity to be maintained during the software upgrade process). We do have a complete high-availability rollout planned for both the EX8200 and our Virtual Chassis products in 2011 which will leverage all the JUNOS HA capabilities. Details are available under NDA.
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