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can't access RB260GSP admin page via http

Posted: Fri Aug 11, 2017 9:11 pm
by pnobels

RB260GSP is uplinked to an Ubiquiti Edgerouter X via port 1 on the RB260GSP. Ports are both configured as access ports and are in the same lan and subnet.
I can only access the RB260GSP http admin page if i connect a network cable directly on a port of the RB260GSP. If i'm connected to the Ubiquiti i cannot access the page.
I can ping the ip of the RB260GSP when i'm connected to the Ubiquiti, but that's all. I already reset the Ubiquiti but that made no change.
Both devices are at the latest firmware btw. RB260GSP at 2.4. Any ideas?

Re: can't access RB260GSP admin page via http

Posted: Sat Aug 12, 2017 11:52 am
by pukkita
From RB260GSP manual:
Note: SwOS uses a simple algorithm to ensure TCP/IP communication - it just replies to the same IP and MAC address packet came from. This way there is no need for Default Gateway on the device itself.
If edgerouter is routing to carry your packets to the RB260GSP, you'll experience this.

Possible fix:

- Setup a port forward /src-nat on ER IP to the RB260GSP, say ER is and RB260GSP is ====>

src-natting so that traffic forwarded by the ER to the RB260GSP appears to the RB260GSP as coming from the ER.

Re: can't access RB260GSP admin page via http

Posted: Mon Aug 14, 2017 10:35 pm
by pnobels
It's not routing. Actually found out today it does not work on Mac OSX. But it does work with Windows 10.

Re: can't access RB260GSP admin page via http

Posted: Tue Aug 15, 2017 9:57 pm
by Kevo
I'm also having this problem intermittently with our CSS326. I was able to get to it earlier, but now I can't. I can't even ping it at the moment, but it's working fine as far as I can tell.

I looked on the wiki and it seems it doesn't work the way typical devices do. There's no default gateway and it's not clear to me how it actually functions. The wiki says it responds to whatever device it sees the packet from, but I can't find it in the arp table of either router attached to it, so right now it doesn't seem to be functioning normally. It doesn't show up on IP Scan right now either. I think we're running 2.3 on it, but I can't check at the moment.

As long as this switch doesn't crash like our old CSS 226 did it will be an improvement, but I had no idea swos worked this way. I hope this isn't something permanent where we won't be able to log into this switch when we need to.

Re: can't access RB260GSP admin page via http

Posted: Tue Aug 15, 2017 11:27 pm
by pnobels
I can always ping to the device. From a wireshark taken on a mac i can see initial communication is happening as i see it switching from http to https. But then it stalls. Haven't had the time to look into this further though... It's not a problem tied to a specific osx install. Happens on all my osx machines.

Re: can't access RB260GSP admin page via http

Posted: Wed Aug 16, 2017 3:43 pm
by Kevo
The problem seems to have been resolved after a reboot. I have it working with SNMP now too. Hopefully everything will be stable now.