Zgemma H7 Open PLi6.2 lats update(15.01.20...
Adrena 25 jan 2019
Hi!
Please forgive me if the thread was discussed.
Adrena 2 feb 2019
Veranderd door Adrena, 2 februari 2019 - 09:55
Adrena 2 feb 2019
Pr2 2 feb 2019
How can a switch port be blocked? What router is that?
A switch with packet storm prevention enabled, if the STB start sending too many packets abnormal packets to saturate the network the switch will block the port.
WanWizard 2 feb 2019
There is nothing in OpenPLi that is different. The hardware is the same, the drivers are supplied by Zgemma, the ethernet stack is Linux. Identical in OpenATV.
WanWizard 2 feb 2019
A switch with packet storm prevention enabled, if the STB start sending too many packets abnormal packets to saturate the network the switch will block the port.
Possible. There are more options, but I still have to see a "2-bit" home router with such features.
Adrena 2 feb 2019
Erik Slagter 4 feb 2019
Possible. There are more options, but I still have to see a "2-bit" home router with such features.
Actually some $0.02 unmanaged switches have this feature, but totally non-configurable, so it's a PITA in the end.
I guess we don't send STP BPDU's in OpenPLi
Adrena 6 feb 2019
WanWizard 6 feb 2019
In an OpenPLi image, downloaded from our download pages, there is NOTHING that generates excessive network traffic.
It does a DHCP request on bootup, and when enigma starts, it checks internet connectivity by verifyting DNS and reachability of our download servers, using a standard ping. The only other components in the image that will generate a bit of network traffic are samba (it will do some broadcast announcements) and avahi (mDNS broadcasts).
You can install tcpdump if you want, to check exactly what communication takes place (be sure to filter your telnet/ssh session out).
Adrena 6 feb 2019
WanWizard 6 feb 2019
As long as the router doesn't say why the port is being blocked, and we don't know what the box is doing, everything is speculation.
What you can do, is install tcpdump:
opkg install tcpdump
Then create the file /etc/init.d/rcS.local, and add the following line to it:
tcpdump -i eth0 -w /media/usb/capture.pcap
(assuming you have the option to connect a USB stick to it), and when done mark the file executable:
chmod 775 /etc/init.d/rcS.local
When the port blocks again, switch the box off, disconnect the USB stick, and upload the pcap file here so we can analyse it.
Adrena 10 mei 2019
WanWizard 10 mei 2019
Wot?
Oscam doesn't do any network communication on its own, not unless you configure it to do so. And even then, a router should not start magically blocking ports...
Erik Slagter 10 mei 2019
Depends on what TS calls "blocking" the port. Is it a layer 2 or layer 3 feature? Spanning tree? BPDU blocking? basic firewall functionality?
WanWizard 10 mei 2019
True.
But as this is about a provider supplied modem/router, I really doubt these features are at play here...