Which two statements about a unified ISSU are correct? (Choose two.)
Which two statements about a unified ISSU are correct? (Choose two.)
A unified ISSU (In-Service Software Upgrade) requires that graceful Routing Engine switchover be enabled to ensure that the control plane can switch seamlessly during the upgrade process. Additionally, it is only supported on platforms with redundant control planes, as having multiple control planes allows one to take over if the other fails or is being upgraded, ensuring network continuity.
B,C are correct