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nlienard/Flow Control for INTEL NIC on FREEBSD

Created February 4, 2016 09:03
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Flow Control for INTEL NIC on FREEBSD
Intel devices use sysctl to enable/disable flow control:
#sysctl -a|grep fc
dev.em.X.fc:3
dev.igb.X.fc:3
dev.ix.X.fc:3
# ifconfig ix0
ix0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8400b8<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO>
ether 0c:c4:7a:79:db:24
inet xxxxxxx netmask 0xffffff00 broadcast 149.202.85.255
inet6 xxxxxx prefixlen 64 scopeid 0x1
inet6 xxxxxxx prefixlen 64
nd6 options=8023<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL,DEFAULTIF>
media: Ethernet autoselect (1000baseT <full-duplex,rxpause,txpause>)
status: active
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