VRRP Master/Master problem in sdwan

[Hamidreza]

Hi,

I have two cedge router and I have configured VRRP in the service VPN (VRF 1) but the VRRP state of two router is master. I have pasted the configuration in below.

Router1:
interface Vlan101
vrf forwarding 1
ip address 10.1.1.2 255.255.255.0
no ip redirects
ip tcp adjust-mss 1430
vrrp 101 address-family ipv4
priority 105
vrrpv2
address 10.1.1.1 primary
exit-vrrp
arp timeout 1200
!

Router2:
interface Vlan101
vrf forwarding 1
ip address 10.1.1.3 255.255.255.0
no ip redirects
ip tcp adjust-mss 1430
vrrp 101 address-family ipv4
priority 90
vrrpv2
address 10.1.1.1 primary
exit-vrrp
arp timeout 1200

in Below you can see the result of show vrrp brief command:

Router1: show vrrp brief
Interface Grp A-F Pri Time Own Pre State Master addr/Group addr
Vl101 101 IPv4 105 0 N Y MASTER 10.1.1.2(local) 10.1.1.1

Router2: show vrrp brief
Interface Grp A-F Pri Time Own Pre State Master addr/Group addr
Vl101 101 IPv4 90 0 N Y MASTER 10.1.1.3(local) 10.1.1.1

Please help me to solve this problem

[ivances]

Hi Hamidreza,

Do you have connectivity between both VLANs?

How do you interconnect both routers, do you have a Core switch?

[ivances]

Maybe, It could be a typo, but you are showing us Vlan1 configuration, but on the sh vrrp br you hace Vlan101 as active on both WAN Edge.

[Hamidreza]

I rectified that. Thanks

[Hamidreza]

Yes, I can ping the physical IP address from each router to the other router.

[dijix1990]

1. Can router1 and router2 communicate each other? ICMP?

2. Is multicast between routers permitted? 

[Hamidreza]

Yes, I can ping , the ICMP goes between the two router.

There is an old (non-Cisco) switch between the two routers. I have doubts that the old switch does not support protocol 112 or Multicast. I must more investigate about these unknown old switches

[Torbjørn]

Have you tried pinging 224.0.0.18?

[MHM Cisco World]

show vrrp <<- can I see this from cedge

also can I see 
show interface trunk <<- from C9K 

and 
show vlan brief <<- from C9K

MHM

[Hamidreza · Accepted solution]

I found the problem. Behind these two routers is an old non-Cisco switch. I deactivated the 'Unknown Multicast No Flood' feature in this switch, and the problem has been solved.