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Broadcast packets not passed?
Posted: Tue Jun 12, 2018 8:59 am
by bcw
Hello,
We have two internet sources connected to our Netonix switch with two gateways on separate subnets. If both subnets are connected the ARP broadcast from x.y.z.85 are not returned.
If I disconnect one of the gateways everything is well.
Did I make a mistake in the configuration?
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Re: Broadcast packets not passed?
Posted: Tue Jun 12, 2018 9:17 am
by sirhc
What, this makes no sense? The switch is a Layer 2 device not a Layer 3 device.
Are you assigning multiple IPs to the switch via the VLANs? This is not what they are for.
The IP address on the Device/Configuration TAB is the switch address.
The addresses you can set on VLANs is a non routable IP that is meant to allow the switch to direct ping a device such as a radio that is not in the same subnet of the switch for the watchdog features.
viewtopic.php?f=17&t=3558&p=23224&hilit=+address+watchdog+routable#p23224
Re: Broadcast packets not passed?
Posted: Tue Jun 12, 2018 9:33 am
by bcw
Perhaps I was not clear.
I am not talking about the switch's IP address.
The IP addresses shown are those of the gateways somewhere else.
The system on port 3 issues the (level 2) ARP request:
00:0e:c4:d2:46:39 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Request who-has 213.190.73.85 tell 213.190.73.86, length 28
There is no reply on these messages, so one option is that they are not passed by the switch
Re: Broadcast packets not passed?
Posted: Tue Jun 12, 2018 11:17 am
by bcw
So - the question is -
With the above configuration - if an untagged broadcast packet with src MAC 00:0e:c4:d2:46:39 arrives on port 3, I expect it to go to port 5 untagged, and to port 1 tagged with the default vlan.
Is this understanding correct?
Re: Broadcast packets not passed?
Posted: Thu Jun 14, 2018 10:19 am
by bcw
Anybody have any insights in why the switch would not send the broadcast to all connected ports?