[c-nsp] copper 10/100 on WS-X6748-SFP using GLC-T or other?

[Chris Caputo]

Does anyone have any new info on this, such as if the WS-X6748-SFP is now 
able to do 10/100/1000 with the GLC-T?

Alternatively, are there non-Cisco RJ45 SFPs which can do 10/100 and can 
work with the WS-X6748-SFP?

While I am here, if you know of a Cisco Gold reseller who would like to 
provide the Seattle IX with at-cost SMARTnet for a 6509 in exchange for 
recognition, please privately let me know.

Thanks,
Chris

On Fri, 11 May 2007, Daniel Suchy wrote:
> Sorry for misinformation, one of my colleagues already noticed me that 
> in some (new) hardware is possible 10/100/1000 operation. As I found, 
> best place to found operational mode of GLC-T in certain hardware is 
> "Cisco Gigabit Ethernet Transceiver Modules Compatibility Matrix" at
> http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_table09186a0080446625.html
> 
> There can be found where is supported 10/100/1000 operation. I have only 
> hardware allowing 1000Base-T only (WS-X67xx, Sup720..) and also GLC-T 
> has full name "1000BASE-T SFP transceiver", which supported my mistake.
> 
> Regards,
> Daniel
> 
> On 05/11/2007 02:54 PM, saso pirnat wrote:
> > Daniel Suchy wrote:
> >> Hi,
> >> GLC-T interface is 1000BaseT-only. You cannot connect 100BaseT devices
> >> here. On 3560 you have 10/100/1000 ports.
> >>
> > 
> > this is port which is conected with same GLC-T sfp to C3560, so sfp is
> > 10/100/1000, but on c7600 is only suported mode 1000
> > 
> >>> sh int on 3560
> >>> GigabitEthernet0/2 is up, line protocol is up (connected)
> >>>   Hardware is Gigabit Ethernet, address is 0016.9d34.5482 (bia
> >>> 0016.9d34.5482)
> >>>   MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
> >>>      reliability 255/255, txload 1/255, rxload 1/255
> >>>   Encapsulation ARPA, loopback not set
> >>>   Keepalive not set
> >>>   Full-duplex, 100Mb/s, link type is auto, media type is
> >>> 10/100/1000BaseTX SFP
> >>>   input flow-control is off, output flow-control is unsupported
> >>>   ARP type: ARPA, ARP Timeout 04:00:00
> >>>   Last input never, output 00:00:00, output hang never
> >>>   Last clearing of "show interface" counters never
> >>>   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
> >>>   Queueing strategy: fifo
> >>>   Output queue: 0/40 (size/max)
> >>>   5 minute input rate 0 bits/sec, 0 packets/sec
> >>>   5 minute output rate 0 bits/sec, 0 packets/sec
> >>>      0 packets input, 0 bytes, 0 no buffer
> >>>      Received 0 broadcasts (0 multicast)
> >>>      0 runts, 0 giants, 0 throttles
> >>>      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> >>>      0 watchdog, 0 multicast, 0 pause input
> >>>      0 input packets with dribble condition detected
> >>>      4501 packets output, 595675 bytes, 0 underruns
> >>>      0 output errors, 0 collisions, 2 interface resets
> >>>      0 babbles, 0 late collision, 0 deferred
> >>>      0 lost carrier, 0 no carrier, 0 PAUSE output
> >>>      0 output buffer failures, 0 output buffers swapped out
> > 
> > The 1000BASE-T SFP can support 10/100/1000 speeds only on the Cisco
> > Catalyst 2970, 3560, and 3750 Series Switches.
> > 
> > It is also possible to have the port auto-negotiate at a lower speed, or
> > force a slower speed. Issue the show interface capabilities command in
> > order to confirm whether a given GLC-T supports 10/100 speed on a switch.
> > 
> > Output from the show interface capabilities command can confirm whether
> > a GLC-T can be run at a lower speed. The output also displays the
> > capabilities of the specified interface, which includes the configurable
> > features and options.
> > 
> > 
> > br saso
> > 
> 
> -- 
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>   Daniel Suchy, technical specialist             tel: +4202 67198350
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