From owner-freebsd-hackers@FreeBSD.ORG  Tue Apr 29 11:24:13 2008
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From: Sharad Chandra <sharadc@in.niksun.com>
Organization: NIKSUN
To: FreeBSD Hackers <freebsd-hackers@freebsd.org>
Date: Tue, 29 Apr 2008 16:13:13 +0530
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Subject: jumbo packets on em card.
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Hi,

I am getting a problem in setting em card to 1000baseTX. It shows "active  
status" with 100baseTX but as soon as i run "ifconfig em1 media 1000baseTX 
mediaopt full-duplex", it says *no carrier*. how can i set it to 1000base?

[root@app210 ~]# ifconfig -m em1
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 9000
        options=4b<RXCSUM,TXCSUM,VLAN_MTU,POLLING>
        capabilities=5b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,POLLING>
        inet6 fe80::204:23ff:febd:b5bd%em1 prefixlen 64 scopeid 0x2
        inet 192.168.1.2 netmask 0xffffff00 broadcast 192.168.1.255
        ether 00:04:23:bd:b5:bd
        media: Ethernet 100baseTX <full-duplex>
        status: active
        supported media:
                media autoselect
                media 1000baseTX
                media 1000baseTX mediaopt full-duplex
                media 100baseTX mediaopt full-duplex
                media 100baseTX
                media 10baseT/UTP mediaopt full-duplex
                media 10baseT/UTP

And is it possible any how to send *jumbo packets* on this card or on bge card 
(bge card is working with 1000base)? I tried nemesis tool, but i don't think 
it can send bigger packets. BPF also seems to have limitaion upto 2K.

--
Thanks
Sharad Chandra