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Boards with switchable SIM slots
| RouterBoard | Modem slot | SIM slots | Switchable |
|---|---|---|---|
| LtAP | lower | 2 | 3 | Y |
| upper | 1 | N | |
| LtAP mini | up | down | Y | |
| SXT R | a | b | Y |
SIM slots switching commands
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Some operators (TMobile, YOTA etc.) allows unlimited data only for device SIM card is used on, all other data coming from mobile hotspots or tethering is highly limited by volume or by throughput speed. Some sources have found out that this limitation is done by monitoring TTL (Time To Live) values from packets to determinate if limitations need to be applied (TTL is decreased by 1 for each "hop" made). RouterOS allows changing the TTL parameter for packets going from the router to allow hiding sub networks. Keep in mind that this may conflict with fair use policy.
| Code Block | ||
|---|---|---|
| ||
IPv4 mangle rule: /ip firewall mangle add action=change-ttl chain=postrouting new-ttl=set:65 out-interface=lte1 passthrough=yes IPv6 mangle rule: /ipv6 firewall mangle add action=change-hop-limit chain=postrouting new-hop-limit=set:65 passthrough=yes |
More information: YOTA, TMobile
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