Trunk on SFP+ ports when connected to CISCO switch in switchport mode trunk

RouterOS Beginner Basics
1

We are new to RouterOS completely and not so advanced in CISCO either. We are trying to configure a CCR1072 to connect to a CISCO switch (2960) through SFP+ ports as a trunk (carry multiple vlans).

CCR1072 (Configured on Winbox so I dont know the commands):

added vlan 99 to interface sfp-sfpplus1
added ip address 192.168.99.1/24 to interface sfp-sfpplus1

CISCO Switch S1:

vlan 99

interface TenGigabitEthernet1/0/1
switchport mode access
switchport access vlan 99

// For testing I have this port configured
interface GigabitEthernet1/0/13
switchport mode access
switchport access vlan 99

Test laptop connected on port 13 of switch with IP address 192.168.99.10 255.255.255.0

With this configuration, I can ping from the test laptop to the vlan interface on the router (192.168.99.1) and also from the router (winbox) I can ping the laptop (192.168.99.10).

So this seems to work at the very basic level when the SFP+ port is configured as an access port (only carry a single VLAN).

However, when I change the switch settings to the following I cannot get any ping:

default interface TenGigabitEthernet1/0/1
interface TenGigabitEthernet1/0/1
switchport mode trunk
switchport trunk allowed vlan 99

I cannot find any option on WinBox to change the sfp-sfpplus1 interface to a trunk, but I thought it doesnt need it, you just add more vlans to that interface. However, this doesnt seem to work with the CISCO switch when the switch is set to switchport mode access.

Please help.

2

You should either define a native VLAN on the trunk on cisco side (switchport trunk native vlan xyz) or add a VLAN interface on the MikroTik.

3

You need to add your ip address to the vlan interface and not the physical sfp port. Right now 99.1 is untagged by being on the sfp port.

4

Also keep in mind that when on a Cisco a port is in access mode, the packets exiting the port are actually not tagged with any VLAN information, it’s just all access ports with the same vlan are like a separate switch.
And since you have bound the 99.1 IP address to the SPF+ interface on your MikroTik (like skuykend said before) you were able to ping the IP from your computer.