LAGG - interface comes up but no laggports

Damien Fleuriot ml at my.gd
Tue Feb 22 11:31:37 UTC 2011


Hello list,



I've been having this odd problem with a lagg interface for some time now...
I have 2 boxes at home, a NAS running 8.1-RELEASE and a win7 workstation.
I recently purchased 2 intel dual port NICs and gifted my machines one each.


My problem is that on the FreeBSD box, the lagg interface is created
correctly, but the NIC's ports aren't added to it.


loader.conf
---
# Up a bit our intel cards parameters
hw.em.txd=4096
hw.em.xxd=4096
hw.em.tx_int_delay=512
hw.em.rx_int_delay=512
hw.em.tx_abs_int_delay=1024
hw.em.rx_abs_int_delay=1024


rc.conf
---
# LINK AGGREG
ifconfig_em0="polling mtu 9014 up"
ifconfig_em1="polling mtu 9014 up"
cloned_interfaces="lagg0"
ifconfig_lagg0="laggproto failover laggport em0 laggport em1"
ipv4_addrs_lagg0="192.168.1.3/29"
ifconfig_lagg0="inet6 fe80::3/64"


lagg0 interface after boot
---
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:00:00:00:00:00
        inet6 fe80::3%lagg0 prefixlen 64 scopeid 0x5
        inet 192.168.1.3 netmask 0xfffffff8 broadcast 192.168.1.7
        nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
        media: Ethernet autoselect
        status: no carrier
        laggproto failover


lagg0 interface after "ifconfig lagg0 laggport em0 laggport em1" manually
---
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9014
        options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
        ether 00:15:17:37:17:e6
        inet6 fe80::3%lagg0 prefixlen 64 scopeid 0x5
        inet 192.168.1.3 netmask 0xfffffff8 broadcast 192.168.1.7
        nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
        media: Ethernet autoselect
        status: active
        laggproto failover
        laggport: em1 flags=0<>
        laggport: em0 flags=5<MASTER,ACTIVE>



pciconf -lcvb
---
em0 at pci0:1:0:0: class=0x020000 card=0x135e8086 chip=0x105e8086 rev=0x06
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'HP NC360T PCIe DP Gigabit Server Adapter (n1e5132)'
    class      = network
    subclass   = ethernet
    bar   [10] = type Memory, range 32, base 0xfe7a0000, size 131072,
enabled
    bar   [14] = type Memory, range 32, base 0xfe780000, size 131072,
enabled
    bar   [18] = type I/O Port, range 32, base 0xa880, size 32, enabled
    cap 01[c8] = powerspec 2  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
    cap 10[e0] = PCI-Express 1 endpoint max data 128(256) link x4(x4)
em1 at pci0:1:0:1: class=0x020000 card=0x135e8086 chip=0x105e8086 rev=0x06
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'HP NC360T PCIe DP Gigabit Server Adapter (n1e5132)'
    class      = network
    subclass   = ethernet
    bar   [10] = type Memory, range 32, base 0xfe7e0000, size 131072,
enabled
    bar   [14] = type Memory, range 32, base 0xfe7c0000, size 131072,
enabled
    bar   [18] = type I/O Port, range 32, base 0xac00, size 32, enabled
    cap 01[c8] = powerspec 2  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
    cap 10[e0] = PCI-Express 1 endpoint max data 128(256) link x4(x4)




Now, this is not such a BIG concern because this lagg is only used
between my win7 workstation and the NAS.
What bothers me is that we have other PF boxes at work, which I also
configured, and for which I do not have this problem.

I should note that this is a direct connection, there is no switch
between the 2 machines.





Also, notice I set a 9014 MTU on my physical ports:
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9014
        options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
        ether 00:15:17:37:17:e6
        inet6 fe80::215:17ff:fe37:17e6%em0 prefixlen 64 scopeid 0x1
        nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9014
        options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
        ether 00:15:17:37:17:e7
        inet6 fe80::215:17ff:fe37:17e7%em1 prefixlen 64 scopeid 0x2
        nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
        media: Ethernet autoselect
        status: no carrier

Yet the lagg interface itself reports a MTU of 1500.




Anyone ever run into this problem before ?


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