多选题S9300支持的三层特性以下说法正确的是（）。A支持OSPF graceful restartB支持ISIS graceful restartC支持BGP graceful restartD不支持BGP gracefulrestart
多选题
S9300支持的三层特性以下说法正确的是（）。
A
支持OSPF graceful restart
B
支持ISIS graceful restart
C
支持BGP graceful restart
D
不支持BGP graceful restart
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