10-21-2009 03:40 AM - edited 03-06-2019 08:13 AM
Which SFP module should I use for my WS-C3750G-12S switch so I can connect a LES100 (100MB)link to the switch. The LES100 link is presented on an RJ45 cable. The WS-C3750G-12S switch has no RJ45 ports.
The LES100 link is over 500 meters.
Many Thanks
10-21-2009 03:53 AM
Assuming I'm not mistaken, I believe the SFP ports only support gig (including copper).
10-21-2009 06:13 AM
That's what I thought but have just been informed by BT that it will run at 100MB.
GigabitEthernet1/0/3
Model: WS-C3750-48P
Type: 10/100/1000BaseTX SFP
Speed: 10,100,1000,auto
Duplex: half,full,auto
Trunk encap. type: 802.1Q,ISL
Trunk mode: on,off,desirable,nonegotiate
Channel: yes
Broadcast suppression: percentage(0-100)
Flowcontrol: rx-(off,on,desired),tx-(none)
Fast Start: yes
QoS scheduling: rx-(not configurable on per port basis),
tx-(4q3t) (3t: Two configurable values and one fixed.)
CoS rewrite: yes
ToS rewrite: yes
UDLD: yes
Inline power: no
SPAN: source/destination
PortSecure: yes
Dot1x: yes
GigabitEthernet1/0/3 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 001e.be6b.911b (bia 001e.be6b.911b)
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 00:00:00, output 00:00:03, output hang never
Last clearing of "show interface" counters 2w5d
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
307 packets input, 23567 bytes, 0 no buffer
Received 258 broadcasts (258 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 258 multicast, 0 pause input
0 input packets with dribble condition detected
130 packets output, 16247 bytes, 0 underruns
10-21-2009 11:41 AM
Darren,
You will need a GLC-T for copper connection, which is what you need for RJ45.
This is what's shown here:
"Full-duplex, 100Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP"
Edit: See this link - I hope it's not a Cisco Parner only link: http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html
HTH
10-21-2009 11:50 AM
Thank you for the correction.
To confirm what Ingolf notes, found this in the data sheet (http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5023/product_data_sheet0900aecd80371991.html): "GLC-T=
GE SFP, RJ-45 connector, 10/100/1000BASE-T transceiver"
10-21-2009 04:33 AM
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