Set ospf cost for VRRP interface

Hi all.

I setup VRRP interface and assign it in OSPF network statement.

high-availability {
    vrrp {
        group vlan35 {
            advertise-interval 1
            interface bond0.35
            rfc3768-compatibility
            virtual-address 10.1.1.2/30
            vrid 35
        }
protocols {
    ospf {
        area 0.0.0.0 {
            network 10.1.1.0/30
        }
        log-adjacency-changes {
        }
        passive-interface default
        passive-interface-exclude bond0.35v35

If run sh ip ospf interface, this command shows what ospf working on VRRP bond0.35v35 interface with cost 25.

bond0.35v35 is up
  ifindex 15, MTU 1500 bytes, BW 4000 Mbit <UP,BROADCAST,RUNNING,MULTICAST>
  Internet Address 10.1.1.2/30, Broadcast 10.1.1.3, Area 0.0.0.0
  MTU mismatch detection: enabled
  Router ID 12.35.10.1, Network Type BROADCAST, **Cost: 25**
  Transmit Delay is 1 sec, State Backup, Priority 1
  Backup Designated Router (ID) 12.35.10.12, Interface Address 10.1.1.2
  Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters
  Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
    Hello due in 9.004s
  Neighbor Count is 1, Adjacent neighbor count is 1

How i can set cost for VRRP?

Hi @orachimary , welcome to our community!

There are two possibilities to set the cost of a link for OSPF
You can set the cost:
set interfaces ethernet bond0.35 ip ospf cost <1-65535>
You can specify bandwidth:
set interfaces ethernet bond0.35 ip ospf bandwidth <1-100000 Bandwidth in megabits/sec>

Nop. This commands relates to bond0.35 only and don’t change ospf metrics for VRRP bond0.35v35 interface. I set

set interfaces ethernet bond0.35 ip ospf cost 1
set interfaces ethernet bond0.35 ip ospf bandwidth 10000

and it’s changed on bond0.35

bond0.35 is up
  ifindex 15, MTU 1500 bytes, BW 10000 Mbit <UP,BROADCAST,RUNNING,MULTICAST>
  Internet Address 10.1.1.2/30, Broadcast 10.1.1.3, Area 0.0.0.0
  MTU mismatch detection: enabled
  Router ID 12.35.10.1, Network Type BROADCAST, Cost: 1
  Transmit Delay is 1 sec, State Backup, Priority 1
  Backup Designated Router (ID) 12.35.10.12, Interface Address 10.1.1.2
  Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters
  Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
    Hello due in 4.174s
  Neighbor Count is 1, Adjacent neighbor count is 1
bond0.35v35 is up
  ifindex 15, MTU 1500 bytes, BW 4000 Mbit <UP,BROADCAST,RUNNING,MULTICAST>
  Internet Address 10.1.1.2/30, Broadcast 10.1.1.3, Area 0.0.0.0
  MTU mismatch detection: enabled
  Router ID 12.35.10.1, Network Type BROADCAST, **Cost: 25**
  Transmit Delay is 1 sec, State Backup, Priority 1
  Backup Designated Router (ID) 12.35.10.12, Interface Address 10.1.1.2
  Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters
  Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
    Hello due in 4.174s
  Neighbor Count is 1, Adjacent neighbor count is 1

Is rfc3768-compatibility a requeriment for your vrrp configuration?
If not, you can delete that configuration, and apply @Nikolay confg on bond0.35 interface