Description: Indicates whether BGP should originate a default route to the peer group for this address family.

BGP cannot originate default VPN routes and so bgpPeergrAfiSafiOrigDefault cannot be set to 'true' if bgpPeerAfiSafiSafi is 'mplsBgpVpn'.

This is because there is no single default route for a VPN address family - there may be one for each VRF. If a default VPN route is required, it should should be redistributed from the corresponding VRF. This ensures that the default VPN route is advertised by BGP along with the associated label, route distinguisher and route targets.

Similarly, BGP does not support the allocation of a label for a default route, and so bgpPeergrAfiSafiOrigDefault cannot be set to 'true' if bgpPeergrAfiSafiSafi is 'labeled'.

Default routes are meaningless for L2VPN auto-discovery and signaling, so bgpPeergrAfiSafiOrigDefault cannot be set to 'true' if bgpPeergrAfiSafiAfi is 'l2vpn'.

The origination of default routes may optionally be conditional based on policy. If this is required, then set bgpPeergrAfiSafiOrigDefaultRtMap to specify a route map.

If no route map is specified (bgpPeergrAfiSafiOrigDefaultRtMap is zero), then default route origination is based solely on the setting of bgpPeergrAfiSafiOrigDefault.