search for: siocsifmtu

...; > noticed that when setting up bridging, the MTU for the bridge and veth > > device is set to 1500. Trying to set the MTU on the bridge, or eth > > device to match that of the peth is unsuccessful: > > > > [root@por-hv-proto3-p4 ~]# ip link set eth0 mtu 16896 > > SIOCSIFMTU: Invalid argument > > [root@por-hv-proto3-p4 ~]# ip link set xen-br0 mtu 16896 > > SIOCSIFMTU: Invalid argument > > > > We''re using xen-unstable, but a very similar issue was discussed > > regarding 2.0.6 on the list a while back, see: > > > > htt...

...twork, the corresponding PIF, and the VIF to 9000 and when displayed in ifconfig it shows that this is indeed true. I have several CentOs 5.6 VMs running in HVM mode (i.e. no xen kernel) which attach to the the storage network through these VIFs and when I attempt to enable jumbo frames, I receive: SIOCSIFMTU: Invalid argument, I receive the same error from ifconfig eth1 mtu 9000 and making the change in the ifcfg-eth1 config file. This is the driver I have running from lspci -vv 00:04.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 20) Subsystem: XenSource, Inc. Devic...

...the interface on domU? Eventhough ''ifconfig eth4 mtu 4000'' command worked in my case, whether it reflect on the actual device? Moreover I can''t set mtu for the bridge as 4k. Setting any value above 1500 mtu shows the following error, xen-152:~ # ifconfig xenbr1 mtu 4000 SIOCSIFMTU: Invalid argument So how to set large mtu in a bridged network on xen? regards Masroor _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

I have a bridge that has gigabit interfaces. The machine in question has the fun job of being a Bridge, Firewall and SMB server. Both of the Gigabit interfaces are connected to workstations directly via Xover cable (well MDI-X to be exact). My question is, if I enable jumbo frames on the gigabit interfaces will that make any difference in overall transfer rate of the bridge? I was thinking it

...y is it so? What is so fundamental in Xen networking that VLANs behaviour change so much whether one uses a 1 Gbit, or 100 Mbit network cards? There is one difference between 1 Gbit and 100 Mbit cards - 100 Mbit cards won''t allow to set the MTU bigger than 1500: # ifconfig eth1 mtu 1501 SIOCSIFMTU: Invalid argument But I''m not sure if it has anything with the described VLAN problem. On the other hand, if I configure VLANs in domU, it works fine then (but it''s a bad approach for me, and prefer to have VLANs in dom0 only). -- Tomasz Chmielewski http://wpkg.org _______...

...all, I've just upgraded my home network to a Linksys SRW2024 (with lovely vlan trunking support!) and I'm trying to enable jumbo frames. When I try to set the MTU of an rtl8169 based network card (it's a Netgear RA311), it comes up with an error stating: # ifconfig eth1 mtu 9000 SIOCSIFMTU: Invalid argument The only options it will take are 1500 or below. Does anyone know anything about this? Do I need to set something special? -- Steven Haigh Email: netwiz at crc.id.au Web: http://www.crc.id.au Phone: (03) 9017 0597 - 0404 087 474

Hi All, For my issue, first thanks to ALL, I have some idea of it. Also Thank Peter for his kind remind, I would become one good guy in this list. Most mentioned MTU, but how I assure that the problem is just MTU, how I debug it? Here is my bridge configuration: Internet | | Gateway | | eth0 Ethernet Bridge | eth1 | H u b ( one normal hub

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi list, I have a *very* strange problem, unfortunately it's kind of a show stopper regarding the deployment of the machine. :( I have two Intel Gigabit Ethernet NICs on board (Supermicro-based Server), quoting lspci (full output see at the end of the email): 0d:00.0 Ethernet controller: Intel Corporation 82573E Gigabit Ethernet Controller