Multi-Hop BFD по BGP

ECO1:

hostname ECO1
 
router isis 1
 net 49.0000.0000.0001.00
 passive-interface loopback.0
 
router bgp 1000
 neighbor 4.4.4.4 remote-as 1000
 neighbor 4.4.4.4 update-source 1.1.1.1
 neighbor 4.4.4.4 fall-over bfd multihop
 
port ge0
 service-instance sige0
  encapsulation untagged
 
interface loopback.0
 ip address 1.1.1.1/32
 
interface inge0
 connect port ge0 service-instance sige0
 ip address 10.0.12.1/24
 ip router isis 1
 
bfd multihop-peer 4.4.4.4 interval 100 minrx 100 multiplier 3

ECO2:

hostname ECO2
 
router isis 1
 net 49.0000.0000.0002.00
 passive-interface loopback.0
 
port ge0
 service-instance sige0
  encapsulation untagged
 
port ge1
 service-instance sige1
  encapsulation untagged
  
interface loopback.0
 ip address 2.2.2.2/32
 
interface inge0
 connect port ge0 service-instance sige0
 ip address 10.0.23.2/24
 ip router isis 1
 
interface inge1
 connect port ge1 service-instance sige1
 ip address 10.0.12.2/24
 ip router isis 1

ECO3:

hostname ECO3
 
router isis 1
 net 49.0000.0000.0003.00
 passive-interface loopback.0
 
port ge0
 service-instance sige0
  encapsulation untagged
 
port ge1
 service-instance sige1
  encapsulation untagged
  
interface loopback.0
 ip address 3.3.3.3/32
 
interface inge0
 connect port ge0 service-instance sige0
 ip address 10.0.34.3/24
 ip router isis 1
 
interface inge1
 connect port ge1 service-instance sige1
 ip address 10.0.23.3/24
 ip router isis 1

ECO4:

hostname ECO4
 
router isis 1
 net 49.0000.0000.0004.00
 passive-interface loopback.0
 
router bgp 1000
 neighbor 1.1.1.1 remote-as 1000
 neighbor 1.1.1.1 update-source 4.4.4.4
 neighbor 1.1.1.1 fall-over bfd multihop
 
port ge1
 service-instance sige1
  encapsulation untagged
  
interface loopback.0
 ip address 4.4.4.4/32
 
interface inge1
 connect port ge1 service-instance sige1
 ip address 10.0.34.4/24
 ip router isis 1
 
 bfd multihop-peer 1.1.1.1 interval 100 minrx 100 multiplier 3