On Wed, 31 Oct 2007 14:54:06 -0700 (PDT) [EMAIL PROTECTED] wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=9270 > > Summary: sunhme requires lower MTU to handle 802.1q frames > Product: Drivers > Version: 2.5 > KernelVersion: 2.6.18-3 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Network > AssignedTo: [EMAIL PROTECTED] > ReportedBy: [EMAIL PROTECTED] > > > Most recent kernel where this bug did not occur: N/A > Distribution: Debian 4.0r1 (Etch) > Hardware Environment: Sun Netra T1 105 > Software Environment: > Problem Description: > sunhme requires lower MTU to handle 802.1q frames - even though the PCI > driver supported VLAN tagging, you cannot do full MTU @ 1500 because the > driver doesn't set the card to transfer more the extra bytes for a 802.1q > frame at 1500 MTU. > > Steps to reproduce: > modprobe 8021q > modprobe sunhme > ifconfig eth0 up > vconfig set_name_type DEV_PLUS_VID_NO_PAD > vconfig add eth0 10 > ifconfig eth0.10 192.l68.0.1 netmask 255.255.255.252 broadcast 192.168.0.3 up > # IP pkt size = 1496, Ethernet frame size = 1514 > ping -s 1468 -c 1 -w 1 192.168.0.2 > # IP pkt size = 1500, Ethernet frame size = 1518 > ping -s 1472 -c 1 -w 1 192.168.0.2 - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
