Date: Sun, 07 Dec 2003 16:41:39 +0900 From: Jun Kuriyama <kuriyama@imgsrc.co.jp> To: Current <freebsd-current@FreeBSD.org> Cc: pdeuskar@FreeBSD.org Subject: dev/em: Link is not up until 2 seconds after "ifconfig up" Message-ID: <7m8ylp6pn0.wl@black.imgsrc.co.jp>
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My experimental 1U box which has em0 and em1 shows following result.
Doing "ifconfig em1 up" after "ifconfig em1 down", link is down 1 or
more seconds. I'm trying to make this box as VRRP router, so 1
second down during master/backup transition (which uses down, mac
address setting, and up) causes ping-pong transition of master router.
I think I can work around some timeout tweaks in VRRP daemon side, but
I hope em(4) driver (or hardware problem?) can deal with it. I did
same test with fxp(4) and rl(4), but these interfaces are active after
"ifconfig up" immediately.
# ifconfig em1 down; ifconfig em1 up; ifconfig em1; sleep 1; ifconfig em1; sleep 1; ifconfig em1
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=3<RXCSUM,TXCSUM>
inet 192.168.128.3 netmask 0xffffff00 broadcast 192.168.128.255
inet6 fe80::230:48ff:fe28:4d75%em1 prefixlen 64 scopeid 0x2
ether 00:30:48:28:4d:75
media: Ethernet autoselect
status: no carrier
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=3<RXCSUM,TXCSUM>
inet 192.168.128.3 netmask 0xffffff00 broadcast 192.168.128.255
inet6 fe80::230:48ff:fe28:4d75%em1 prefixlen 64 scopeid 0x2
ether 00:30:48:28:4d:75
media: Ethernet autoselect
status: no carrier
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=3<RXCSUM,TXCSUM>
inet 192.168.128.3 netmask 0xffffff00 broadcast 192.168.128.255
inet6 fe80::230:48ff:fe28:4d75%em1 prefixlen 64 scopeid 0x2
ether 00:30:48:28:4d:75
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
# pciconf -lv
...
em0@pci2:3:0: class=0x020000 card=0x10118086 chip=0x10108086 rev=0x01 hdr=0x00
vendor = 'Intel Corporation'
device = '82546EB Gigabit Ethernet Controller (copper)'
class = network
subclass = ethernet
em1@pci2:3:1: class=0x020000 card=0x10118086 chip=0x10108086 rev=0x01 hdr=0x00
vendor = 'Intel Corporation'
device = '82546EB Gigabit Ethernet Controller (copper)'
class = network
subclass = ethernet
...
--
Jun Kuriyama <kuriyama@imgsrc.co.jp> // IMG SRC, Inc.
<kuriyama@FreeBSD.org> // FreeBSD Project
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