Second router has LAN IP address 192.168.90.254/24. A virtual private network (VPN) extends a private network across a public network and allows end hosts to perform data communication across shared or public networks.. Note that not always packets will get balanced over LAG members even though the destination is different, this is because the standardized transmit hash policy can generate the same transmit hash for different destinations, for example, 192.168.0.1/192.168.0.2 will get balanced, but 192.168.0.2/192.168.0.4 will NOT get balanced in case layer2-and-3 transmit hash policy is used and the destination MAC address is the same. Below is an example how to send a copy of packets that are meant for 4C:5E:0C:4D:12:4B: Note: If the packet is sent to the CPU, then the packet must be processed by the CPU, this increases the CPU load. Alfred Lewis Consider the following scenario, you have created a bridge, added a few interfaces to it and have created a VLAN interface on top of the bridge interface, but you need to increase the MTU size on the VLAN interface in order to receive larger packets. This is a network design and bonding protocol limitation. To create eoip interface launch the command on 1st MT router (i's LAN address is 192.168.72.254/24): add mac-address=FE:BF:F9:10:FA:89 name=eoip2 remote-address=WAN_IP_OF_2nd_MT tunnel-id=10, add address=10.10.10.2/30 interface=eoip2 network=10.10.10.0. Misconfigured Layer2 can sometimes cause hard to detect network errors, random performance drops, certain segments of a network to be unreachable, certain networking services to be malfunctioning or a complete network failure. 9000 byte MTU encrypted with IPSEC, 1500 byte MTU unencrypted After setting the bridge split-horizon on each port, you start to notice that each port is still able to send data between each other. The following configuration is relevant to R1 and R2: While the following configuration is relevant to AP1, AP2, ST1 and ST2: Where X corresponds to and IP address for each device. The following configuration is relevant toR1andR2: While the following configuration is relevant toAP1,AP2,ST1,andST2, whereXcorresponds to an IP address for each device. The EoIP tunnel protocol is one of the more popular features we see deployed in MikroTik routers. On home router if you wish traffic for the remote office to go over tunnel you will need to add a specific static route as follows: After tunnel is established and routes are set, you should be able to ping remote network. 9000 byte MTU unencrypted There are multiple ways to force a packet not to be sent out using the bonding interface, but essentially the solution is to create new interfaces on top of physical interfaces and add these newly created interfaces to a bond instead of the physical interfaces. This month, we'll consider a more robust VPN client alternative: Layer 2 Tunneling Protocol (L2TP) over IPsec. If an improper configuration method is used on a device with a built-in switch chip, then the CPU will be used to forward the traffic. Note: By default Windows sets up L2TP with IPsec. L2TP is an IETF standard for tunneling Point-to-Point Protocol (PPP) across any intervening network. As soon as you configure your devices to have connectivity on the ports that are using these SFP optical modules, you might notice that either the link is working properly or experiencing random connectivity issues. If selected, then route with gateway address from 10.112.112.0/24 network will be added while connection is not established. This might raise some security concerns as traffic from different networks can be sniffed. Next step is to enable L2TP server on the office router and configure L2TP client on the Home router. As soon as you configure your devices to have connectivity on the ports that are using these SFP optical modules, you might notice that either the link is working properly or are experiencing random connectivity issues. If they do, then you know there might be an issue with your provider. In such a scenario, you would have probably set interface MTU to 9000 onServerAandServerB and on yourSwitchyou have probably have set something similar to this: This is a very simplified problem, but in larger networks, this might not be very easy to detect. Devices on ether1 and ether2 need to send tagged packets with VLAN-ID 99 in order to reach the host on ether3 (other packets do not get passed towards VLAN interface and further bridged with ether3). Full authentication and accounting of each connection may be done through a RADIUS client or locally. MikroTik provides GRE (Generic Routing Encapsulation) tunnelthat is used to create a site to site VPN tunnel. Hours of Admissions. For a device that is only supposed to forward packets, there is no need to increase the MTU size, it is only required to increase the L2MTU size, RouterOS will not allow you to increase the MTU size that is larger than the L2MTU size. There is a way to configure the device to have all ports switch together and yet be able to use VLAN filtering on a hardware level, though this solution has some caveats. It makes things so easy, that it really gives MikroTik a significant competitive advantage against Cisco and other vendors that have tunneling features in their routers and firewalls.When you look at the complexity involved in deploying a tunnel over ipsec in a Cisco router vs. a MikroTik router, there is a clear advantage to using MikroTik for tunneling. The following configuration is relevant toSW1andSW2: After initial tests, you immediately notice that your network throughput never exceeds the 1Gbps limit even though the CPU load on the servers is low as well as on the network nodes (switches in this case), but the throughput is still limited to only 1Gbps. Use bridge VLAN filtering. L2TP incorporates PPP and MPPE (Microsoft Point to Point Encryption) to make encrypted links. (R)STP might not always detect this loop since (R)STP is not aware of any VLANs, a loop does not exist with untagged traffic, but exists with tagged traffic. Shukyou (Goodreads Author) 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars. we already know the cool layer 2 devices, which really help us reducing collision domain . This way it is possible to setup bridging without EoIP. Bonding interfaces are not supposed to be connected using in-direct links, but it is still possible to create a workaround. Very similar case toVLAN on a bridge in a bridge, there are multiple possible scenarios where this could have been used, most popular use case is when you want to send out tagged traffic through a physical interface, in such a setup you want traffic from one interface to receive only certain tagged traffic and send out this tagged traffic as tagged through a physical interface (simplified trunk/access port setup) by just using VLAN interfaces and a bridge. Note that L2MTU parameter is not relevant to x86 or CHR devices. For very powerful routers, which should be able to forward many Gigabits per second (Gbps) you notice that only a few Gigabits per second gets forwarded. Laptop is connected to the internet and can reach Office router's public IP (in our example it is 192.168.80.1). Below is an example of how such a setup should have been configured: By enablingvlan-filteringyou will be filtering out traffic destined to the CPU, before enabling VLAN filtering you should make sure that you set up aManagement port. In case you want to isolate each port from each other (a common scenario for PPPoE setups) and each port is only able to communicate with the bridge itself, then all ports must be in the same bridge split-horizon. LACP requires both bonding slaves to be at the same link speeds, Wireless links can change their rates at any time, which will decrease overall performance and stability. Similar behavior can be achieved using bridge filter rules. Note that the L2MTU parameter is not relevant to x86 or CHR devices. Were hoping your config can shed some light as to why were not able to achieve the performance numbers youre able to accomplish. In a ring-like topology with multiple network topologies for certain VLANs, one port from the switch will be blocked, but in MSTP and PVSTP(+) a path can be opened for a certain VLAN, in such a situation it is possible that devices that don't support PVSTP(+) will untag the BPDUs and forward the BPDU, as a result, the switch will receive its own packet, trigger a loop detection and block a port, this can happen to other protocols as well, but (R)STP is the most common case. Did anyone ever perform RFC benchmarking for layer-2 using JDSU testsets or similar, through Mikrotiks EoIP? UDP port 1701 is used only for link establishment, further traffic is using any available UDP port (which may or may not be 1701). In cases where there are only 2 ports added to a bridge (R/M)STP should not be used since a loop cannot occur from 2 interfaces and if a loop does occur, the cause is elsewhere and should be fixed on a different bridge. Can you share your configuration with us please? Some devices will be accessible because the generated hash matches the interface, on which the device is located on, but it might not choose the needed interface as well, which will result in inaccessible device. For example, if you set MTU and L2MTU to 9000, then the full-frame MTU is 9014 bytes long, this can also be observed when sniffing packets with"/tool sniffer quick" command. The bridge should either have an administratively set MAC address or an Ethernet-like interface in it, as PPP links do not have MAC addresses. In this scenario, it is not needed to increase the MTU size for the reason described above. Unfortunately, I dont have the config from that test anymore, but considering the devices were directly connected in a lab, you might want to use two test devices and directly connect them with your current config and see if the speeds improve. If you require the packet to be received on the interface and the device needs to process this packet rather than just forwarding it, for example, in the case of routing, then it is required to increase the L2MTU and the MTU size, but you can leave the MTU size on the interface to the default value if you are using only IP traffic (that supports packet fragmentation) and don't mind that packets are being fragmented. 802.1Q tunneling (aka Q-in-Q) is a technique often used by Metro Ethernet providers as a layer 2 VPN for customers. Layer 2 Tunneling Protocol Version 3 (L2TPv3) Generic Routing Encapsulation (GRE) Components Used This document is not restricted to specific software and hardware versions. IPSec parameters? As the trunk port is used on both VLANs, you, Traffic is flooded between different VLANs, {"serverDuration": 140, "requestCorrelationId": "b595930f2db105d9"}, Traffic going through only one LAG member. One way to achieve this is to create EoIP tunnels on each physical interface, but that creates a huge overhead and will reduce overall throughput. Below you can find an example of how the same traffic tagging effect can be achieved with a bridge VLAN filtering configuration: A very similar case toVLAN on a bridge in a bridge, consider the following scenario, you have a couple of switches in your network and you are using VLANs to isolate certain Layer2 domains and connect these switches to a router that assigns addresses and routes the traffic to the world. To disable IpSec, registry modifications are required. This is very relevant for RB2011 and RB3011 series devices. Interkoneksi Jaringan dengan L2TP+IPSec. When this option is enabled, dynamic IPSec peer configuration is added to suite most of the L2TP road-warrior setups. Bridge window will appear now. This is very relevant for RB2011 and RB3011 series devices. Now, repeat these steps for router BO and confirm that it can access the internet. set interfaces bridge br0 address 192.168.1.1/24. Since a device receives a malformed packet (tagged BPDUs should not exist in your network when running (R)STP, this violates IEEE 802.1W and IEEE 802.1Q), the device will not interpret the packet correctly and can have unexpected behavior. Core(config-if)# ip address 10.0.0.1 255.255 . L2MTU size does not include the Ethernet header (14 bytes) and the CRC checksum (FCS) field. I originally looked into this feature for EoIP but it is available many other tunnel types like gre, ipip and 6to4. One way to achieve this is to create EoIP tunnels on each physical interface, but that creates a huge overhead and will reduce overall throughput. L2TP merupakan pengembangan dari PPTP ditambah L2F. Eoip is ??? L2TP includes PPP authentication and accounting for each L2TP connection. Now router is ready to accept L2TP/IpSec client connections. 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