diff --git a/config/general_config/ovb-ha-multiple-nics.yml b/config/general_config/ovb-ha-multiple-nics.yml
index ed0c1b177..b0969b505 100644
--- a/config/general_config/ovb-ha-multiple-nics.yml
+++ b/config/general_config/ovb-ha-multiple-nics.yml
@@ -39,6 +39,7 @@ network_environment_args:
   TenantAllocationPools: [{"start": "172.16.0.10", "end": "172.16.0.250"}]
   DnsServers: "{{ overcloud_dns_servers }}"
   PublicVirtualFixedIPs: [{ "ip_address": "{{ undercloud_external_network_cidr|nthhost(5) }}" }]
+  NeutronGlobalPhysnetMtu: 1350
 
 # baremetal settings
 overcloud_nodes:
diff --git a/config/general_config/ovb-minimal-pacemaker-public-bond.yml b/config/general_config/ovb-minimal-pacemaker-public-bond.yml
index 8b4d72dbf..df695815c 100644
--- a/config/general_config/ovb-minimal-pacemaker-public-bond.yml
+++ b/config/general_config/ovb-minimal-pacemaker-public-bond.yml
@@ -40,6 +40,7 @@ network_environment_args:
   DnsServers: "{{ overcloud_dns_servers }}"
   PublicVirtualFixedIPs: [{ "ip_address": "{{ undercloud_external_network_cidr|nthhost(5) }}" }]
   BondInterfaceOvsOptions: bond_mode=balance-slb
+  NeutronGlobalPhysnetMtu: 1350
 
 # baremetal settings
 overcloud_nodes: