HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Routing Comma - Page 215

Parameters None Description Use synchronization to enable the synchronization between the BGP and IGP routes. Use undo synchronization to disable the synchronization. The feature is disabled by default. With this feature enabled and when a non-BGP router is responsible for forwarding packets in an AS, BGP speakers in the AS cannot advertise routing information to other ASs unless all routers in the AS know the latest routing information. When a BGP router receives an IBGP route, it checks only whether the next hop is reachable by default. If the synchronization is enabled, the IBGP route is synchronized and advertised to EBGP peers only when the route is also advertised by IGP. Otherwise, the IBGP route cannot be advertised to EBGP peers. Examples # Enable the synchronization between BGP and IGP routes. system-view [Sysname] bgp 100 [Sysname-bgp] synchronization timer (BGP/BGP-VPN instance view) Syntax timer keepalive keepalive hold holdtime View undo timer BGP view, BGP-VPN instance view Default level 2: System level Parameters keepalive: Keepalive interval in seconds, ranging from 0 to 21845. holdtime: Holdtime interval in seconds, whose value is 0 or in the range of 3 to 65535. Description Use timer to configure the BGP keepalive interval and holdtime interval. Use undo timer to restore the default. By default, the BGP keepalive interval and the holdtime interval are 60 seconds and 180 seconds. The timers configured with the peer timer command are preferred to the timers configured with this command. If the holdtime interval is configured as 0, no keepalive message will be sent to the peer, and the peer connection will never time out. If the keepalive interval is configured as 0 and the negotiated hold time is not 0, one third of the hold time is taken as the interval for sending keepalive messages. 204