BFD IPv4 support on 7210 SAS platforms is as follows.
BFD IPv4 in a VPRN service is supported for:
OSPV2 PE-CE routing protocol
static routes
VRRP
BGP for PE-CE protocol
PIM for PE-CE protocol for ng-MVPN
BFD IPv4 in an IES service is supported for:
OSPFv2
IS-IS for IPv4 interfaces
static routes
VRRP
BFD IPv4 in the base routing instance is supported for:
OSPFv2 on network IPv4 interfaces
IS-IS on network IPv4 interfaces
VRRP on network IPv4 interfaces
MP-BGP for vpn-ipv4 and vpn-ipv6 family (only multi-hop)
static routes
RSVP-TE
PIM
TLDP
interface LDP (link-level)
BFD IPv4 for MPLS-TP is supported for:
BFD for MPLS-TP LSP linear protection, only on 7210 SAS-T, 7210 SAS-R6, and 7210 SAS-R12
See BFD IPv6 support on 7210 SAS platforms for more information about BFD IPv6 support on 7210 SAS platforms.
On the 7210 SAS-T, 7210 SAS-R6, 7210 SAS-R12, 7210 SAS-Sx 1/10GE, 7210 SAS-Sx 10/100GE, and 7210 SAS-Mxp, BFD processing is supported in hardware, enabling faster detection (minimum timer supported is 10 ms). Hardware-based BFD sessions are supported only for an IP interface configured on a port. For IP interfaces configured over LAG and for BFD sessions using system IP addresses or loop-back IP addresses, CPM CPU-based sessions are supported with a minimum timer of 100ms.