Cable Forum - View Single Post - VM Business New VM Business service

vsn · 22-03-2018, 09:21

Have they sorted out the packet fragmentation yet?

About a year ago I discovered that that MTU on VM Business is 1300 when using static IP with the Hitron.

Now that in itself might be OK and any packets larger than this with the DF (don't fragment) bit set result in an ICMP "Fragmentation Needed but DF is set" error.

The real problem is that it appears the Hitron silently discards packets larger than 1300 bytes when the DF bit is not set.

The only "solution" I was offered was switching to dynamic IP, which I did. But then port forwarding doesn't work and they were not able to fix that.

This was a year ago. Are things any better now?

22-03-2018, 09:21	#124
vsn Inactive Join Date: Mar 2017 Posts: 5	Re: New VM Business service - 350Mb Have they sorted out the packet fragmentation yet? About a year ago I discovered that that MTU on VM Business is 1300 when using static IP with the Hitron. Now that in itself might be OK and any packets larger than this with the DF (don't fragment) bit set result in an ICMP "Fragmentation Needed but DF is set" error. The real problem is that it appears the Hitron silently discards packets larger than 1300 bytes when the DF bit is not set. The only "solution" I was offered was switching to dynamic IP, which I did. But then port forwarding doesn't work and they were not able to fix that. This was a year ago. Are things any better now?