Hi,
Sorry for the late response.
By default CPU originated protocol packets are mapped to qp8 at egress hardware port with dscp value marked as 48 .So control packets never get drop due to congestion at egress port provided...
As per our implementation,"config ip-mtu size vlan" doesn't impact ipv4 jumbo frame data path traffic provided whether jumbo frame is enabled on ingress and egress L3 vlan ports using cmd "enable jumbo-frame ports".So, for fast path routing of ipv4...
