Community discussions

MikroTik App
 
User avatar
wh1test
just joined
Topic Author
Posts: 12
Joined: Fri Sep 30, 2016 9:33 am

Routing between bridges on Mikrotik

Fri Sep 15, 2023 10:40 pm

Hi there,

Could somebody help me please? I have very simple topology (attached: Mikrotik CRS125 has two bridges (bridge_517 and bridge_523). In subnet 10.5.23.0/24 we have bridge (zyxel keenetic) where default route is Mikrotik (10.5.23.253).
The problem is I'm not able to access hosts in subnet 10.5.23.0/24 from hosts in subnet 10.5.17.0/24. If I send trace Mikrotik (10.5.17.1) says the host in subnet 10.5.23.0 is unreachable, BUT I'm able to ping those hosts from Mikrotik winbox.
And I'm able to access Zyxel interface (10.5.23.1) from host in subnet 10.5.17.0/24.

I tried permit ALL traffic on firewall, checked routes and so on. It seems routing between bridges is not working =|

Could someone advise something please?
mikrotik_zyxel.jpg
routes.jpg
You do not have the required permissions to view the files attached to this post.
 
peterda
newbie
Posts: 46
Joined: Mon Jan 18, 2021 11:51 am
Location: Norway

Re: Routing between bridges on Mikrotik

Sat Sep 16, 2023 11:51 am

Do not use two bridges, one is enough to achive what you want to do.
If you must/want/need to use two bridges, be aware that they do not communicate with each other until you set that up.
 
DarkNate
Forum Guru
Forum Guru
Posts: 1065
Joined: Fri Jun 26, 2020 4:37 pm

Re: Routing between bridges on Mikrotik

Sat Sep 16, 2023 12:17 pm

Seriously, why tf are people still doing this dumb double/triple/multiple bridges crap on modern-day Linux DSA? Have they not received basic education and training in Linux networking or something?
 
User avatar
wh1test
just joined
Topic Author
Posts: 12
Joined: Fri Sep 30, 2016 9:33 am

Re: Routing between bridges on Mikrotik

Sat Sep 16, 2023 3:04 pm

Do not use two bridges, one is enough to achive what you want to do.
If you must/want/need to use two bridges, be aware that they do not communicate with each other until you set that up.
Thank you so much for your reply. I tried to use on bridge, but the problem is still persist =(
one_bridge.jpg
You do not have the required permissions to view the files attached to this post.
 
tdw
Forum Guru
Forum Guru
Posts: 2032
Joined: Sat May 05, 2018 11:55 am

Re: Routing between bridges on Mikrotik

Sat Sep 16, 2023 6:00 pm

Your original network diagram doesn't show the whole picture (no mention of the 172.16.x.x subnets, or the router at 10.5.17.253). What is the default gateway of the devices on the 10.5.23.0/24 network? Does the target device accept ICMP requests from outside its subnet (hint Windows doesn't)?
 
User avatar
wh1test
just joined
Topic Author
Posts: 12
Joined: Fri Sep 30, 2016 9:33 am

Re: Routing between bridges on Mikrotik

Sun Sep 17, 2023 3:48 pm

I've managed to fix the issue:
1. Hosts in 10.5.23.0 subnet were configured to use wrong GW IP address. I set it to 10.5.23.253.
2. Traffic between bridge_517 and bridge_523 works fine.
3. Regarding my another branch (subnet 172.16.177.0). I configured p2p link between router 172.16.177.254 and mikrotik 10.5.17.1 through subnet 10.192.34.252/29 and set routes.
Now everything works fine.
Thank you very much for respond.
 
avirt
just joined
Posts: 10
Joined: Wed Jan 31, 2018 8:23 am

Re: Routing between bridges on Mikrotik

Tue Oct 10, 2023 9:44 pm

Seriously, why tf are people still doing this dumb double/triple/multiple bridges crap on modern-day Linux DSA? Have they not received basic education and training in Linux networking or something?
I see one reason to have two bridges, it's using Jumbo frames over LAN with using ordinary frames of WiFi in same device. Is this possible with out split to two bridges?

Who is online

Users browsing this forum: buokhalid and 2 guests