Date: Tue, 29 Apr 2008 05:43:21 -0700 From: Jeremy Chadwick <koitsu@freebsd.org> To: Sharad Chandra <sharadc@in.niksun.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: jumbo packets on em card. Message-ID: <20080429124321.GA45965@eos.sc1.parodius.com> In-Reply-To: <200804291743.43010.sharadc@in.niksun.com> References: <200804291613.14081.sharadc@in.niksun.com> <20080429120209.GA44534@eos.sc1.parodius.com> <200804291743.43010.sharadc@in.niksun.com>
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On Tue, Apr 29, 2008 at 05:43:42PM +0530, Sharad Chandra wrote: > ,---- [Jeremy Chadwick wrote:] > | On Tue, Apr 29, 2008 at 04:13:13PM +0530, Sharad Chandra wrote: > | > 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? > | > | The PHYs support auto-negotiation of speed and duplex, as per the 802.3 > | standard. > | > | Do you have a gigabit switch? If so, does auto-negotiation (e.g. no > | "mediaopt" or "media" settings) work? If not, is the switch a managed > | switch? If so, try explicitly setting the port on the switch to > | 1000mbit, full duplex. If not, then consider buying another switch. > | Many consumer/residential switches do not do auto-negotiation properly, > | resulting in "no carrier" or worse (bad throughput). > > No, I am not using any switch. It is back-to-back connection. It is only > requirement for me. By "back to back" you mean you're connecting two PCs together with a proper crossover cable? Is it CAT5e at least? What PHY and NIC are on the opposite end of the em(4)? -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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