Which statement is true regarding a unified in-service software upgrade (ISSU)?
A.
BFD must be enabled.
B.
GRES and NSR must be enabled.
C.
VRRP must be enabled.
D.
OAM must be enabled.
Which statement is true regarding a unified in-service software upgrade (ISSU)?
Which statement is true regarding a unified in-service software upgrade (ISSU)?
b
ANSWER SHOULD BE B
B
B is correct for ISSU
The correct answer should be B, Graceful routing engine service and Non-Stop routing