HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Command Referenc - Page 172

Views IS-IS view Predefined user roles network-admin Examples # Enable GR for IS-IS process 1. system-view [Sysname] isis 1 [Sysname-isis-1] graceful-restart Related commands graceful-restart suppress-sa graceful-restart suppress-sa Use graceful-restart suppress-sa to suppress the Suppress-Advertisement (SA) bit during restart. Use undo graceful-restart suppress-sa to set the SA bit. Syntax graceful-restart suppress-sa undo graceful-restart suppress-sa Default The SA bit is set during restart. Views IS-IS view Predefined user roles network-admin Usage guidelines Suppressing the SA bit is mainly for avoiding black hole route. If a router starts or reboots without keeping the local forwarding table, sending packets to the router might result in a severe packet loss. To avoid this, you can set the SA bit of the hello packet sent by the GR Restarter to 1. Upon receiving such hello packets, the GR Helpers will not advertise the GR Restarter through LSP. Examples # Suppress the SA bit during graceful restart. system-view [Sysname] isis 1 [Sysname-isis-1] graceful-restart suppress-sa Related commands graceful-restart 161