We have configured Neutron and ml2 agent to use MTU 1500 using linux bridge agent but the VM's cannot run apt update but if we set the MTU to 1450 in the VM network interface works well.
Here is my neutron.conf value and ml2_conf.ini.
neutron.conf:
global_physnet_mtu = 1550
ml2_conf.ini:
[DEFAULT]
path_mtu = 1550
physical_network_mtus = physnet1:1550
Vxlan:
+---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | nova | | created_at | 2021-03-30T17:40:59Z | | description | | | dns_domain | None | | id | 4ddce1ef-8151-4c67-b3ca-7519f2ab54c3 | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | None | | is_vlan_transparent | None | | mtu | 1500 | | name | gfgfggf | | port_security_enabled | True | | project_id | 2467cb8a053d40f0a0a8af43d89d1c32 | | provider:network_type | vxlan | | provider:physical_network | None | | provider:segmentation_id | 2 | | qos_policy_id | None | | revision_number | 4 | | router:external | Internal | | segments | None | | shared | False | | status | ACTIVE | | subnets | 9a312e58-e830-4dc5-bd6e-ad903230f6b4 | | tags | | | updated_at | 2021-03-30T17:57:31Z | +---------------------------+--------------------------------------+
Anyone can help?
UPDATE: The issue was solved restarting the controller and all hypervisors.
Thanks.
