How to configure mikrotik network equipment » History » Revision 19
Revision 18 (Nico Schottelius, 05/21/2020 04:52 PM) → Revision 19/32 (Nico Schottelius, 05/21/2020 04:53 PM)
h1. How to configure mikrotik network equipment
{{toc}}
h2. Status
This document is **PRE PRODUCTION**.
h2. Setting up a newly arrived Mikrotik switch
This part is specific for mikrotik-crs326 devices and should
After arriving within 1 work day do:
* Unpack
* Find out which name the switch should have
** go to https://netbox.ungleich.ch
** search for crs326
** identify the last used number
** Create a new device
*** go to devices
*** devices
*** add
**** name: "mikrotik-crs326-XX"
**** device-role: a device role
**** device-type: CRS326
**** serial-number: <from the device>
**** site: placeX -
**** create
* Add a physical label with its name
** Do not continue before you have done that!
* configure your notebook with the ipv4 address 192.168.88.23/24
* connect to the crs326: @ssh admin@192.168.88.1@
* Configure the switch
** Set identity: @/system identity set name=mikrotik-crs326-XX@ # use the correct name
** Set password: @/user set admin password=@ # use the password for mikrotik in the place that you are, use password store
** Enable IPv6: @/system package enable ipv6@
** Reboot so that IPv6 is enabled: @/system reboot@
** Add a place indendent, unrouted IPv6 address: @/ipv6 address add eui-64=yes advertise=no interface=bridge address=2a0a:e5c0:1:c::/64@
** Get the assigned IPv6 address: @/ipv6 address print@
** Disconnect from the switch
* Assign your notebook the IPv6 address *2a0a:e5c0:1:c::23/64*
* Connect to the switch via IPv6
** Remove the IPv4 address 192.168.88.1 to avoid collisions with other switches: @/ip address remove numbers=0@
*** Verify: @/ip address print@
* Verify / update entries in netbox:
** Verify that the serial number is correct: @:put [ /system routerboard get serial-number ]@
** Netbox
*** go to the ipv6 prefix https://netbox.ungleich.ch/ipam/prefixes/216/
**** create a new ipv6 address
**** set the DNS name to *mikrotik-crs326-XX*
**** role = loopback
* Ensure all steps are taken correctly
* Move the device to our inventory / stock if not directly used
h2. Configuring a Mikrotik switch for integration into the network
Depending on the usage scenario, we will define a variety of bridges and assign ports to it.
* In almost all cases the uplink port will be the *sfp-sfpplus1* port.
* In almost all cases we want to apply vlan tagging to that port
* For server networks, we configure the MTU to the highest value the switch supports
** Devices are configured with a 9200 MTU
** So the MTU on the switch ports needs to be at least 9200
h3. First step for all integrations
Setup MTU of all *sfp-sfpplus* ports (plural) to 9200 and the L2MTU to 9204:
Use @/interface print@ to find out the maximum MTU:
<pre>
[admin@mikrotik-crs326-1] > /interface print
Flags: D - dynamic, X - disabled, R - running, S - slave
# NAME TYPE ACTUAL-MTU L2MTU MAX-L2MTU MAC-ADDRESS
0 S ether1 ether 9200 9204 10218 B8:69:F4:8E:AC:BA
1 S ether2 ether 9200 9204 10218 B8:69:F4:8E:AC:BB
...
24 R sfp-sfpplus1 ether 9200 9204 10218 B8:69:F4:8E:AC:D2
25 sfp-sfpplus2 ether 9200 9204 10218 B8:69:F4:8E:AC:D3
</pre>
Above is already setup, but the values differ, use the following to set it correctly:
<pre>
/interface set sfp-sfpplus1 mtu=9200 l2mtu=9204
/interface set sfp-sfpplus2 mtu=9200 l2mtu=9204
</pre>
h3. Use case 1: coworking network
To use the switch in a coworking network, we keep the MTU
* Create a vlan interface named *vlan-coworking*: @/interface vlan add vlan-id=15 name=vlan-coworking interface=sfp-sfpplus1@
** Verify that it is created: @/interface vlan print@
** Lookup the vlan-id from https://netbox.ungleich.ch/ipam/vlans/
** The vlan will be added to *sfp-sfpplus1*
* Create a bridge named *bridge-coworking*: @/interface bridge add name=bridge-coworking@
** Verify that it is created: @/interface print@
* Add the interface *vlan-coworking* to the *bridge-coworking* as a port: @/interface vlan add interface=vlan-coworking@
** Verify that the port is added: @/interface vlan print@
* Add all ethernet ports that you need for coworking to the *bridge-coworking*
** For instance to add port 7: @/interface bridge port set bridge=bridge-coworking numbers=6@
*** Find the number of the interface with @/interface bridge port print@
** Verify again like you did above
h3. Use case 2: server or internal network
Steps similar to above, BUT ensure that the MTU is set correctly on all interfaces.
* Ensure that the mtu is correct on the *sfp-sfplus* interfaces (see above)
** This is important
* We create a bridge named
** *bridge-server*: @SAMI@
** *bridge-internal*: @SAMI@
* We create a new vlan interface on *sfp-sfpplus1* named
** *vlan-server*: @SAMI@
** *vlan-internal*: @SAMI@
* Add the
** *vlan-server* interface as a port to *bridge-server*: @SAMI@
** *vlan-internal* interface as a port to *bridge-internal*: @SAMI@
* Verify that the MTU is correct
** On the VLAN interface
** On the bridge
** On the sfp-sfapplus interfaces
<pre>
If the MTUs are wrong, you can encounter hanging connections, while ping (small packet) still works. Be careful to do it right.
</pre>
h2. Update the switch to the latest version
(TBD for IPv6 only networks)
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