Cisco :: Conditioning Cable For Multimode Fiber Link?
Feb 12, 2013
An external company is going to deploy multiple fiber links on my campus.Link distances vary from 120 to 400 meters.I already have the switches in production with spare SFP gigabit ports on the locations.The backbone is gigabit, so I asked them to use GLC-LH-SMD SFP modules.So, they just called me and according to them, the minimum distance for MMF links with that SFP module is 550 meters. I checked Cisco's website and it says "up to 550m"?
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May 6, 2012
I am planning on implementing a mode-conditioning patch solution along with LX/LH SFP's over multimode fiber in my network. I wanted to know if this solution is also supported by the G5486 Gbic's, ie, can I use the 5486 GBIC along with a mode-conditioning patch over multimode fiber as well?
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Jan 24, 2012
I have 4 workstation at 4 different power substations. Each substation have switches. All substations is link with fiber optic cable throw switches. Each substation has 100 relay (IED) with different IP address it connect with substation switches. The IP address of substation is[CODE]
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Sep 3, 2012
I have had fiber optics for phone, TV, and internet (30/30 speed). They upped the price 80%! I would like to keep my internet on fiber optics but drop TV and phone to cable which is cheaper. Can I have both systems simultaneously? Also, we have a Sony L-series TV/Computer. IT's a TV and computer in one. Can we have both fiber optics and cable attach to it at the same time?
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May 14, 2012
The core switch is a 6506 and one of the modules is the 48port POE module. The 6506 resides in the main building and we need to interconnect two other annexes to the main building via fibre. is it possible to have just 2 sfp ports on the 48 port module or how to connect the fibre cable to the switch?
Also, if the existent network is made up of Cat5e cables would it be of anyuse to use Cat6 cables for uplink for the switches on each segment to the core switch. I feel basically the Cat5e would nullify the speed of the Cat6 or am i wrong and this would make uplink speed faster.
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Apr 2, 2013
I have X3000 home gateway and very happy with this device. Use it now as ADSL modem/wifi router. Everything works fine but there is something I do not understand about this device.It has 4 LAN ports and a Cable port. Suppose, I am upgraing from a copper service to fibre. Fibre providers comes and installs their fibre box which is kind of a "modem" for fibre technology. how do I connect fibre box to X3000? Do I use Cable port or a LAN port?
As far as I understand the 4 LAN ports work as switch ports (work at OSI level 2, provide access strictly within same subnet, all devices connected to these ports share the same default gateway), and Cable port gets a different IP address via DHCP or another protocol from the fibre box, or directly from ISP (if we have PPPoE or IPoE service as an example). And there would be no point in plugging WAN link into a LAN port as X3000 would not be able to communicate to the gateway on the other end of the cable.
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Feb 9, 2013
We recently moved to a new office and currently have three ISPs(DSL, SAT, 4G) because we are unable to get Cable nor Fiber services. We have anywhere between 7-20 Remote Desktop connections(with lot of file transfers) and 8 VOIP lines. Basically, we need to bind certain services to specific WAN links in order to make everything work somewhat decent because of the limited bandwidth and/or latency of each ISP.
I would like to double check if the bindings are working for the specific services, and it has been difficult to verify if the settings in the RV016 are working. I believe it's not working 100%, and I need a way to check and make sure that my settings are being followed.
What would be the best way to check the current connections to see if the service is being routed via the WAN link specified in my setting? My RV016 is HW ver 3, but not the latest firmware. Purchased about 2 months ago.
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Dec 12, 2012
I have a WS-X6816-10G-2T module with X2-10GB-SR modules. I will be getting a SMF hand off and the length of the termination is around 100 meters. (I will be getting another hand off for Inter-DC link for which I have X2-10GB-LR module). The question is can I connect this SMF hand off (short length) on the SR module?
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Dec 14, 2011
I want to "stack" a couple 300 series gigabit switches with fiber using a pair of MGBSX1 GBICs and a single LC to LC patch cable.Is there a minimum supported patch cable length in this configuration?
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May 25, 2013
I need to connect 4 Floor Building with 4 Cisco 2960 - 48 ports switch each other and it needs to be through a fiber. So all PCs connected to each switch would reach the LAN/WAN from the other switch. (attached is the image here with)
I see that the 2960 has 2 SFP ports each port of each switch should connect each other or how?
My simple question is:
1. What cable / patch code I have to use = Single-mode or Multimode? ( distance for each switch will not more then 25 mts)
2. Do I have to use SFP or SFP+ module?
3. What kind of SFP/SFP+ module I have to use = Single-mode or Multimode?
4. What kind of connector should patch code have = LC / SC or ?
5. How to connect each switch with redundancy like ...each switch should be interconnected with each other or I have to choose Cisco 3750G which has more then 2 SFP ports (option#1 & opetion#2 = attached here with) =
Best practice for connecting cisco switches over fiber.
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Feb 7, 2011
We have a 6509 Sup2 at our ISP edge with fiber connection to ISP. I am planning on replacing the 6509 either with 7206VXR-GE2 or ASR 1002.
How do I find out what GBIC is installed on my Sup2 right now where Fiber cable is connected?What GBIC/SFP will be compatible for this on 7206VXR or ASR1002?If I use SFP do I need to change the cable connector?
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Feb 23, 2012
I have a problem connecting a PC in a TwinGig Convertors (GLC-LH-SM). I want to connect a PC with a fiber cable on the supervisor WS-X45-SUP6L-E of my Switch 4500E.
The default configuration mode is X2. As I want to deploy Gigabit interfaces (that is, use TwinGig Convertors), then I configured the associated port-group:
Switch(config)#hw-module module 1 port-group 2 select gigabitethernet
*Feb 24 06:18:37.125: Port Te1/2: TwinGig Converter inserted: vendor: CISCO
Switch(config)#do sh int status mod 1
Port Name Status Vlan Duplex Speed Type
[code]....
I noted that the Swicth set up automatically 'switchport mode trunk', so i put the command 'swicthport mode access' because i want to connect only a PC. But the status is the same, I can not achieve connectivity. i just want to know how connect a PC in the interface GigabitEthernet1/4 of the supervisor engine of my Switch.
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Sep 30, 2011
correct settings > Configuration of WAG54G2 on etisalat adsl fiber optic
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Feb 26, 2011
I have 100 mbps fiber connection. I bought 320N today I bought 320N and here is the problem:
We have a switch in the building. I am getting connection via CAT5. So I choosed "Use as WAN Port" from Ethernet settings. There is not much you can do here. I just used PPPoE and connected internet without any problem. The problem is I am only getting 32mbps. When I connect CAT5 cable directly to my computer I am getting 92mbps.
Maybe WAG320N is not establishing a full duplex connection.
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Dec 15, 2010
As the subject suggests I have an issue with a ME-3400 that crashed when the fibre patch was pulled.
This is the reduced output from #show cpu proc
198 78753 213 369732 46.38% 37.30% 13.32% 0 IGMPSN L2MCM 213 21813 468 46608 11.23% 9.90% 3.69% 0 REP BPA/EPA Proc
Amongst other things this was pulled from #show log
Dec 15 11:01:38 WST: %SYS-2-CHUNKEXPANDFAIL: Could not expand chunk pool for REP Cam Flush . No memory available -Process= "Chunk Manager", ipl= 4, pid= 1-Traceback= D9BAA8 D9C1F4 1738F20 A6E77C A6524CDec 15 11:01:46 WST:
[Code].....
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May 15, 2012
i would like to know the config. steps required for setting up fiber link between two cisco c3650v2
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Apr 27, 2013
I have the following connectivity :Nexus(7004) - M1 8Port card with x2-10GB-SR <----------------------> 6509 -- 6704 card -- xenpak-10GB-SR ,The fiber link is not coming up.
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Nov 5, 2012
We have Fiber link down down from both ends. From switch A goes to fiber box then to other fiber box then to switch B.
Switch A
Model: WS-X4418-GB-Gbic
Type: 1000BaseSX
Switch B
Model: WS-C3750G-24TS-1U
Type: 1000BaseSX SFP
Both sides are configured as trunk .
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Jun 4, 2013
I'm working with a customer who has an SGE2000P and a Catalyst 2960 to setup and configure a single mode fiber link. The SGE2000P has an MFELX1 fiber GBIC and the 2960 has a GLC-LH-SMD GBIC. When I have the customer plug in his fiber, there is a power light that comes on on the MFELX1 GBIC. Neither GBICs/switches show that a link or activity is occurring, but the presence of that light makes me think that they are connecting somehow. Are these two switches/GBICs compatible?
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Jan 6, 2012
below is the current config of link that is already up. I need to add another fiber redundant link between 6509 and 2960 stack. How to work on config Spanning side by not taking 6509 down after the change. 6509 is in distribution.
---------------X-ALPHA-IDF-1FORMS-2960S-0# (SIDE)
!interface GigabitEthernet1/0/52description X-ALPHA-F-6509-0 uplinkswitchport trunk native vlan 18switchport mode trunksrr-queue bandwidth share 1 50 30 19priority-queue out mls qos trust dscpmacro description cisco-routerauto qos trust spanning-tree portfast disablespanning-tree guard loopip dhcp snooping trust!
-----------------X-ALPHA-F-6509-0# (SIDE)
!interface GigabitEthernet3/10description 1st floor POC2 Forms IDFswitchportswitchport trunk encapsulation dot1qswitchport trunk native vlan 18switchport mode trunkno ip addressmls qos trust dscpspanning-tree guard loop!
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Sep 30, 2012
We are using CISCO 4507R-E switch as our core/distribution switch. Out of the 7 available slots, 3 are currently being used. Descriptions is as follows:
Slot 1: 6 Port Fiber Line Card
Slot 2: 6 Port Fiber Line Card
Slot 3: Supervisor Engine
Slot 4: Empty
Slot 5: 48 Port Copper Line Card
Slot 6: Empty
Slot 7: Empty
We want to add extra 10 Gbps fiber links (approximately 12) using slot 6 and 7.
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Jan 21, 2012
I'd like to use an SG200 swicth to allocate bandwidth on a 100 Mbps fiber Internet uplink.I will have 5 routers (each supporting a separate network) connected to the SG200, and I'd like to give each network 20 Mbps. QOS configuration, best CIR and CBS settings for this.
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Aug 4, 2012
connecting a Cisco 3945 Router to an Ethernet WAN Link. The service provider has provided a 100M Ethernet Single Mode Fiber handoff to the customer premises with SC Connector. The CPE configuration proposed for this setup is like this. [code]
Since the SFP has LC Connector, i suppose i need to have an SC-LC Cable for connecting the Ethernet link. Do i need anything else, apart from above?
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Feb 26, 2013
when I connect my DIR-655 to the Motorola SB6141 cable modem I notice that the link speed LED on the cable modem never glows blue indicating a gigabit connection, it only glows amber indicating a lower negotiated speed. I am using a Cat6 cable between the two devices and have also tried a Cat5e cable.
When I try and force the WAN port speed to 1000Mpbs in the router interface the cable modem link speed will not light at all with no connectivity. Only resetting to Auto WAN port speed restores functionality albeit at the lower negotiated speed setting.
I'm running the DIR-655 rev B1 at 2.03NA firmware level.
I did connect the modem directly to my PC that uses an Intel Gigabit ethernet card and still had the lower connection indication (Amber) so it seems that the modem might be faulty.
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Jan 30, 2013
I've had this modem set up for over 6 months and this just happened out of the blue. I had no connection to the internet, and the lights on LAN 1 and 3 were lit (only LAN 1 is in use.) I think I went about this the wrong way because now the LAN lights won't light up at all, and the internet light is always yellow. I know it's not the ISP because well I'm writing this post with my modem plugged directly into the PC.
When I try to reinstall the router using the CD I get an error message stating that the Ethernet cable probably isn't plugged in, although it is, as I followed each step exactly.
Now when I try to plug in the PC to the router I can't access the router webpage, and device manager is showing an Ethernet controller with a yellow exclamation mark under other devices. I don't even know where to start.
HW: C1
FW: I resetted the modem in an attempt to get this working again, so I imagine it's at the default now. Besides I can't access the router page anyways.
Region: NA - Canada
Wired Connection
Factory reset: Yes
ISP: Shaw (Cable)
Modem: Motorolas SB5102 - no built in router
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Jan 8, 2009
The setup:
Time Warner Cable Internet Dynamic IP
DIR-655 A3 Firmware 1.21
3 hard wired, fully updated, virus free, windows xp pro machines
The Issue:When only one PC is running or actively being used there is no issue. However, when there is moderate internet usage on a second pc the internet connection will drop (the WAN light on the router stays on as does the ethernet light on the modem) and give this pair of log entries.
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Jan 12, 2013
My DIR-825 is not in an ideal spot so I am thinking of getting an extension cable for the antenna (probably for both), drilling a little hole in a wall and mounting the antenna in a more central location. It really is just on the other side of a wall, maybe 5 feet total for distance, but in an open area where the signal should reach more of the house.
Can I run a cable and attach the antennas five feet away from the device itself? Is there anything I should look for in an extension cable?
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Nov 20, 2011
When i connect my WAG160N V2 to DSL, i don't get link, but if i tried whit a friend´s modem i get link. I use the same cables and dsl split.
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Jul 1, 2012
How to connect TP-Link 3G wiireless N router model:TL:MR3420 and WIRELESS N Router with ethernet cable to share internet
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Jun 6, 2011
i'm trying to connect to my wii n my laptop. i have a cricket broadband hookup to desktop.
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Nov 27, 2012
I have just replaced a wbr-1310 with a dir-601. I can connect with an Ethernet cable, but not wireless. I have comcast cable with a Motorola surfboard modem. I was able to connect with the wbr-1310 with this setup.
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Apr 4, 2011
Laptop, Desktop with USB stick, and 2 notebooks all were working fine on wireless prior to switching from phone line, to high speed cable connection at router. Have tried reset, unplug power, reinstalled router and everything else I could think of but none of them will connect. Shows a good strong signal from router but will not connect. Re-entered numbers, password etc as well in all other computers. What else to try other than a new router? Could it be coincidence that router decided to quit, around same time as changeover? Cable connections good and main computer connected via cable works ok, just all wireless not working.
Can't log in to d-link either. wrong password,? Type in admin, but won't log on without password and I tried but won't accept . Hitting reset and then retry didn't work either?
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May 10, 2013
i recently bought my dir-615 to hook up with my tp- td 8816 modem. After setting it up and successfully working one day, the router randomly stopped sending a WiFi signal. I restarted it twice and it began to work once more. I decided to install dd wrt build 21061 for my E3 dir -615 router. Unfortunately, i could not get it to work. I have dsl internet and my isp uses PPPoE. I used the option for the set up and filled out the appropriate information, but it would not work and the internet light on the router would turn orange.
Unfortunately i decided to play around with this router at the wrong time and the people in my house needed it. I decided to quickly re flash it by going into the emergency room(holding reset button during router reset until orange button starts blinking). However when i select the official d link firmware, it simply will not change. The page is stuck loading on the d-link emergency room page with no progression whatsoever. I tried the process 3 times already.
For some reason, i can connect to the router through WiFi but not through cable. When i connect through WiFi i am on the dd wrt firmware. I don't think i can return the modem to the store since it is clearly on DD WRT firmware.
I'm either looking for a solution to re flashing back to stock firmware, or making the internet work on the dd wrt firmware. The internet light turns orange when i select PPPoE on the set up...
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