Dare I say you have the root password? JP On Tue, 1 Nov 2016 18:11:29 -0700, Nathan Anderson wrote > Don't ask me how I got this; ifconfig results from EPC running 729: > > eth1 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX > inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:X errors:0 dropped:0 overruns:0 frame:0 > TX packets:X errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:X (x.x GiB) TX bytes:X (x.x GiB) > Interrupt:77 Base address:0xc000 > > eth1.11 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX > inet addr:x.x.x.x Bcast:x.x.x.255 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1496 Metric:1 > RX packets:X errors:0 dropped:0 overruns:0 frame:0 > TX packets:X errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:X (x.x GiB) TX bytes:X (x.x GiB) > > eth1.12 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX > inet addr:x.x.y.x Bcast:x.x.y.255 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1496 Metric:1 > RX packets:X errors:0 dropped:0 overruns:0 frame:0 > TX packets:X errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:X (x.x GiB) TX bytes:X (x.x GiB) > > eth1.13 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX > inet addr:a.b.c.d Bcast:a.b.c.255 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1496 Metric:1 > RX packets:X errors:0 dropped:0 overruns:0 frame:0 > TX packets:X errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:X (x.x GiB) TX bytes:X (x.x GiB) > > VLAN 11 is bearer, VLAN 12 is management, VLAN 13 is PDN. > > I could try increasing the MTU manually on the master interface and then on > the VLANs, outside of confd, but that would not persist across reboots of the > EPC. It would be an interesting experiment, however, just to see if the > hardware (or at least the current software/drivers) is capable of it. > > We currently aren't pursuing full 1500 MTUs for LTE end-users (hasn't been a > problem to-date), so I haven't dug very far into this. I have just been > reading the threads here with interest and curiosity. However, given what > I'm seeing on ours, I don't see how, despite what we have seen posted here > earlier, it is at all currently possible to achieve 1500 MTU to end-user. > Not simply because the PDN VLAN is restricted to 1496 (which would make that > the highest MTU from end-user to internet possible), but also because the > bearer VLAN is stuck at 1496, which is a whopping 78 bytes short of the > purported minimum 1574 MTU that is needed. > > So: does anybody actually have this working? If not, why have we been told > that it is possible with the current software releases? > > -- Nathan > > > From: [email protected] [mailto:[email protected]] On Behalf Of > Jeremy Austin > Sent: Tuesday, November 01, 2016 2:51 PM > To: [email protected] > Subject: Re: [Telrad] L3 MTU settings > > > > > On Sun, Oct 16, 2016 at 12:26 AM, J Portman <[email protected]> wrote: > > Yup, but the EPC vlans are hard set to 1500 at the current time and no way to > change them. Beating my head against this wall right now. > > Using the resources in this thread, I've tracked down a couple points of > interest. > > > > ENBs running [4013, 4539, or 4573] return a full packet (ICMP+headers) of > MTU 1900. (Payload 1900-28=1872) This is on either bearer or management VLANs. > > > > EPC running 729, however, returns only 1496 (1468+headers). This is on > several PDNs, management, and bearer. > > > > In all cases (Mikrotik routers, Netonix switches in some places) MTU size is > set to 1900 or higher. > > > > On the EPC, netstat does not appear to show interface info (no -i flag), so I > can't tell what the MTU is purported to be. > > Has anyone had success verifying and/or changing the EPC's MTU(s)? > > > -- > > Jeremy Austin > > > > (907) 895-2311 > > (907) 803-5422 > > [email protected] > > > > Heritage NetWorks > > Whitestone Power & Communications > > Vertical Broadband, LLC > > > > Schedule a meeting: http://doodle.com/jermudgeon
Joe Portman Alamo Broadband Inc. www.alamobroadband.com
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