nanog mailing list archives
Re: Wireless STM-1 link
From: Brian Reichert <reichert () numachi com>
Date: Thu, 10 Sep 2009 10:12:03 -0400
On Thu, Sep 10, 2009 at 11:55:40AM +0200, Rens wrote:
All the interfaces are forced to 1Gbps and full duplex.
I thought that with 1000T, you need to keep autonegotiation in place: http://etherealmind.com/2008/07/15/ethernet-autonegotiation-works-why-how-standard-should-be-set/ "A major problem is that many people are also hard setting Gigabit Ethernet , and this is causing major problems. Gigabit Ethernet must have auto-negotiation ENABLED to allow negotiation of master / slave PHY relationship for clocking at the physical layer. Without negotiation the line clock will not establish correctly and physical layers problems can result." Further: http://en.wikipedia.org/wiki/Autonegotiation "The debatable portions of the autonegotiation specifications were eliminated by the 1998 version of IEEE 802.3. In 1999, the negotiation protocol was significantly extended by IEEE 802.3ab, which specified the protocol for gigabit Ethernet, making autonegotiation mandatory for 1000BASE-T gigabit Ethernet over copper." Note the 'mandatory'... -- Brian Reichert <reichert () numachi com> 55 Crystal Ave. #286 Daytime number: (603) 434-6842 Derry NH 03038-1725 USA BSD admin/developer at large
Current thread:
- Wireless STM-1 link Rens (Sep 10)
- Re: Wireless STM-1 link Adam Goodman (Sep 10)
- RE: Wireless STM-1 link Rens (Sep 10)
- Re: Wireless STM-1 link Josh Cheney (Sep 10)
- RE: Wireless STM-1 link Rens (Sep 10)
- Re: Wireless STM-1 link Arie Vayner (Sep 10)
- Re: Wireless STM-1 link Florian Weimer (Sep 10)
- RE: Wireless STM-1 link Rens (Sep 10)
- Re: Wireless STM-1 link Kieran Murphy (Sep 10)
- RE: Wireless STM-1 link Rens (Sep 10)
- RE: Wireless STM-1 link Rens (Sep 10)
- Re: Wireless STM-1 link Adam Goodman (Sep 10)
- Re: Wireless STM-1 link Brian Reichert (Sep 10)
- Re: Wireless STM-1 link Kevin Loch (Sep 10)
- Re: Wireless STM-1 link Kenny Sallee (Sep 10)
- Re: Wireless STM-1 link Mike (Sep 10)
- RE: Wireless STM-1 link Paul Stewart (Sep 10)
- RE: Wireless STM-1 link Rens (Sep 23)