Date: Wed, 26 Jan 2005 12:57:41 -0800 From: Jon Simola <jsimola@gmail.com> To: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: em(4) VLAN + PROMISC followup question Message-ID: <8eea04080501261257583771cf@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
Referencing: http://lists.freebsd.org/pipermail/freebsd-net/2004-November/005738.html I appear to have hit a similar or the same problem (with the exception that I'm not bridging with the vlan), has anyone (Robert Watson appears to be the lead) come up with anything? My config is 5.3-STABLE with em1 the parent for a handful of vlans. em1: flags=18843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,POLLING> mtu 1500 options=5b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,POLLING> inet6 fe80::230:48ff:fe72:f30b%em1 prefixlen 64 scopeid 0x6 ether 00:30:48:72:f3:0b media: Ethernet autoselect (1000baseTX <full-duplex>) status: active vlan120: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet xxx.xx.177.254 netmask 0xffffff00 broadcast 209.53.177.255 inet6 fe80::205:5dff:fe71:8d20%vlan120 prefixlen 64 scopeid 0xd ether 00:30:48:72:f3:0b media: Ethernet autoselect (1000baseTX <full-duplex>) status: active vlan: 120 parent interface: em1 Running a tcpdump on either em1 or one of the vlan interfaces reduces throughput by a factor of 10 or so. Running tcpdump with the -p option does not. This is a steady stream of 10 to 20 Mbps of traffic, routing 11 /24s over 4 vlans, kernel polling is enabled for the em devices. Thank you, Jon Simola Systems Administrator ABC Communications
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?8eea04080501261257583771cf>