Cisco Switches :: Connect 2 SGE200 Series Switches Over Gbit / Fiber

Mar 27, 2013

I have a stack of 6 switches and I want to add another over the gbit connector using fiber. I already connected but I can acces the network from the new switch. I don't have any issues on my Stack all resources are available Do I need to do some special setup or connection to enable this? Can be stacked like the others? I already usen the 2 stacking port can i Add another switch?

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Cisco Switches :: SG 200-26 Double Gbit Port Configured In Load Balancing And Failover

Sep 21, 2011

I've a network with 28 computers and 2 servers. Each server have a double Gbit port configured in Load Balancing & Fail Over.Now, I want to buy two Cisco's Switch SG 200-26 and I would know the best way to connect them and if it's possible to interconnect them with more than one cable to share the trafic.
1. Is this following solution a good one (does the link between swhitches will work when computers will access to servers) ?

2. Is this next solution possible ?

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Cisco Switches :: SG200-18 Switches With LC Single Mode Fiber SFP's

Dec 2, 2012

We have a project in which we are using 34 Cisco SG200-18's each with a MGBLX1 (LC Single Mode Fiber) SFP mini-GBIC.All the fiber's come back to one building where we must "bridge" all 34 fiber connections. What hardware should be used to accomplish this? A L2 switch? For example, a 12 port SFP Switch with Fiber SFP's accepting the first 12 fiber connections, then other switch with SFP for the next 12 and so on, until there is a overall capacity of 36 and having patch cables between the 3 switches?
what cisco or non cisco hardware would work with these SF200-18's to accomplish this?

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Cisco WAN :: 2960s - How To Connect Via Diverse Fiber To Both Switches

Mar 2, 2012

We have a stack of 2960S, and have a new client that wants to connect via diverse fibre to both switches(From 2 switches on there side). We currently run MST and client is (currently) running PVRST. The 2 links will be trunks (With the same ~5 vlans running over both)
Our "standard" trunk config is:
switchport trunk allowed vlan 228,229,265-268
switchport mode trunk
mls qos trust dscp
storm-control broadcast level 20.00
storm-control action trap
no cdp enable
spanning-tree bpdufilter enable
spanning-tree guard root
So after recommendations on what is needed to avoid L2 loop, and to ensure we force one trunk port to be the "primary" for those vlans, and the the other trunk port to be "backup"?

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Cisco WAN :: 1921 - Connect Switches Via Fiber / How To Configure HWIC

Oct 30, 2011

we bought the Cisco 1921 ISR with the HWIC-1GE-SFP to get a router that would be able to connect via fiber to our switches. I called Cisco and their reps recommended this router/HWIC pair to me.

I have got the basic configuration out of the way and I have discovered my router with CCP, now I would like to know how I can configure this HWIC. I have the SFP(GLC-SX-MM= ) installed correctly and it is connected to our test switch via an LC/LC cable, but when I do 'show ip interface" all ports are down except the one my workstation connects directly to the router with (gigabit0/1).

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Cisco Switches :: How To Erase All Configuration In ESW 500 Series Switches

Aug 21, 2011

How to erase or remove  configuration file from ESW 500 Series Switches?

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Cisco WAN :: Connect 7206 And 3900 Series Routers Through Fiber?

Jun 4, 2013

We are migrating from a Microwave T1 WAN to a Fiber ring WAN which I'll be connecting to our providers Ciena Metro E switches.  Eventually we are going to move away from the routers,  but the network is a little too complex as well as spanned across a lot of miles.  Since I am the only networking personnel here, I would like to first simply migrate to the fiber by simply moving the connection configs off of the T1 interfaces, and onto one of the Gig interfaces on the 7206 and on one of the Fe interfaces on the 3900 (which is actually a 3700 series because the line card on the 3900 is toast).  If this works, I will need to purchase Fe line cards for the 7206, because I found out that the virtual interfaces do not support Policy Mapping for our QOS and Multicasting.

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Cisco Switches :: Which SFP For MM 62.5 Fiber SRW2008P

Feb 11, 2013

I am specking a SRW2008P-K9 switch for a customer.  They are using MM 62.5 fiber.  I need to know what Gig SFP will work for them.  I am also quoting them a WS-C3750X-24P-S. 

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Cisco Switches :: VLANS Between SGE2010s And SLM2024 Via Fiber

Oct 19, 2011

I have  successfully set up a VLAN on my primary switch which is an SGE2010. I  have 3 other switches is other buildings connected in series. The next  in line is another SGE2010 and then a SLM2024 and an SGE2010. Each are  connected with Fiber and I'm not sure how to set up the switches so that  the router controlling VLAN 2 will push IP addresses to the clients on  that VLAN and allow internet access. We're using it as a guest VLAN for  our customers to have internet access. I have those GBIC ports set up as  trunks right now except for the SLM2024...I'm not quite sure how to set  that up. The VLAN is set up on each switch exactly the same though.

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Cisco Switches :: Adapting Fiber SC Connector To SRW2048?

Jan 4, 2013

Trying to replace 3Com Superstack II Switches (3C16980) with 100Base-FX Modules (3C16970) with a Cisco solution. Existing Fiber connector in Network closet on both ends is an SC connector (picture attached). What Modules, adapter cables do I need to connect to an SRW2048 switch at one end an SRW2024 switch at the other? Will this solution provide a Gigabit connection over the Fiber ?
I am looking at using SRW2048-K9-NA with MGBSX1 module at one closet and SRW2024-K9-NA with MGBSX1 module in the other closet at the other end of the Fiber cable.
I found an adapter cable that will convert an SC male to an LC Male and it looks like it will work but I have no experience with fiber. I attached a picture of this adapter as well. It is listed on line as  - 1ft Fiber Optic Adapter Cable LC (Male) to SC (Female) Multimode 62.5/125 Duplex

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Cisco Switches :: Fiber Connection Between 3Com 5500G EI And SG-300

May 30, 2012

We’ve just begun the transition from our old 3Com switches to new Cisco switches and we’ve encountered interoperability problems as we start the transition.Goal:  Extend 6 VLANs (each representing an IP subnet) via fiber from a port on the 3Com 5500G-EI to a port on the Cisco SG-300-52

We assign an IPV4 address to the Cisco SG-300-52.  We can successfully ping/web-manage at this address if we do a temporary copper jumper from a 3Com switch to the Cisco.  IP address is in the subnet assigned to VLAN7•2)      At the 3Com side, the fiber port is set as “hybrid” and is passing VLAN 1 untagged; VLANs 3-8 tagged•3)      At the Cisco side, the fiber port is set as “trunk” and is defined with VLAN 1 untagged and VLANs 3-8 tagged. 

If I try to change the management interface on the CISCO from VLAN 1 to VLAN 7 (as I would on the 3Com), I lose connectivity over the temporary copper connection•B)     

If I remove the temporary copper jumper from the Cisco (keeping the “working” management IP address) and create the fiber link between the 2 switches, I lose connectivity to the management IP , If I set the 3Com fiber port to “access” and make the fiber connection, I can ping the management interface – but of course, I can’t pass the other VLANs to untagged access ports on the Cisco – and it has the fun side benefit of messing with IP management settings on other 3Com switch stacks attached to the 5500G-EI.  However, it does demonstrate that we can get network traffic communicating over the fiber link between the 2 switches.

How I can proceed to a) have the management IP address in the IP subnet defined on VLAN 7 while passing the other VLANs to access ports on the Cisco?  BTW, I’m a networking neophyte (it’s a very small part of my job and I do it infrequently), so I prefer to use GUI management to CLI options, although I can perform CLI configuration if presented with the right commands.

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Routers / Switches :: Create A Fiber Optic Network?

Jul 23, 2012

When it comes to fiber optics my knowledge is very limited. All I know is that they can carry data at high bandwidth for a long range at blazing speeds etc.My boss has asked me to link several buildings to the network and I am led to believe that joining them through fiber optics to be best since we are expecting a lot of data traffic between.I have done the normal RJ-45 networking with Gigabit networking in my organisation but need your assistance on how to join each of the buildings through fibre optics.So far this is my plan.Draw up the fiber optic lines from the main building to each building.All the buildings have Gigabit Cat6e cabling and network in each.I am planning on using a single mode media converter to convert the end of the fibre optic to the normal RJ45 connector and plug it to each switch at each of the ends of the fiber optic cable .Am I going in the correct direction?I don't even know the gadgematics required except for the cables them selves, crimping tools, the media converter. There is about 300-400 metres in between of each building from the main building.Also, I believe that we need to create cross over cables as in the normal way we do in connecting 2 switches. Your input is very valuable to me.

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Cisco Switching/Routing :: Fiber Connection Between Two 2960 Switches?

Mar 22, 2012

Company I work for just moved into a new location.  We have two data closets which are patched as independent entities, with no Ethernet tie connection. These closets are roughly 100 feet apart. 
There is a fiber connection that runs between both closets, that the previous tenant used to connect the switches.  I have placed a Cisco 2960 switch in each location, and added one mini SFP gbic's to each switch.  After attaching both sides, neither light up.  I do a sh inter gig1/0/49 on each and shows 'down down' (not admin down).
What is the trick on getting these to communciate, do I need to configure these ports, and are they supposed to light up? 
What I am trying to accomplish is to get the one closet that is completely cut off, communicating by logically stacking, or 'daisy chaining' via fiber. 
I turned off the lights and popped the fiber out, and I do see a faint red light (I did not look straight into it), so I think the fiber is active.

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Cisco Switches :: SG 300-10 - Mapping Fiber To Ethernet Ports (VLans)?

Jul 25, 2011

the incoming fiber on ports 9 and 10 are on different subnets. I need to map the subnet on port 9 to ethernet ports 1-9 and port 10 is on its own.  I have the device IPv4 address set to a static address on the same subnet as port 9.  I don't know if there's an easier approach, but I attempted to map the ports using vlans (See the attached screenshots).  We don't yet have the fiber link established for port 10, so I haven't had a chance to test, but I wanted to confirm that my configuration is sound.  I used the default vlan for ports 1-9, because I need to manage through that subnet.  I added vlan 10 for port 10, but I don't know if I have it configured correctly.

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Cisco Switches :: 1G Fiber Module Part Code For SG500X

May 10, 2012

We Need SG500X Switch for its VRRP Features.  and also, We do have 1G Fiber on Network.  So, which fiber module can i choose for SG500X switch.
It do have 4x 10GE SFP+ Ports.
Can i choose MGBLX1  for SG500X for 1 gigabit fiber connectivity?

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Cisco Switching/Routing :: 3750 - Fiber Uplink Between Switches

Nov 3, 2011

I have three switches:
primary - Cisco Catalyst 3750G-24TS-24
and two SG300-28
I need to apply uplinks as follows:
3750G-24TS-24 SFP (1) -> SG300-28 (first) mini-GBIC (1)3750G-24TS-24 SFP (2) -> SG300-28 (second) mini-GBIC (1)SG300-28 (first) mini-GBIC (2) -> SG300-28 (second) mini-GBIC (2) 
I would like to know, What type of mini-GBIC and SFP and cable I should use for SX Multimode?What max speed rate I will get?  

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All Substations Is Link With Fiber Optic Cable Throw Switches?

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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Cisco Switches :: Minimum Fiber Patch Cable Length For MGBSX1

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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Cisco Switching/Routing :: Connecting 3750G With DLink Switches Through Fiber (SFP)

Jul 18, 2011

I have issue with connectivity 3750G with Dlink Switch, it cannot connect to non-cisco switch with fiber , But CISCO to CISCO switch it shows connectivity. My question is that is there any configuration on Cisco 3750G switch to connect with non-cisco switch through fiber (SFP) ?

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Cisco Switching/Routing :: 3750 Switches With All Optical Fiber Ports?

Feb 14, 2013

We have a scenario where we want to connect 14 access layer  2950 switches to Core switch 3750 via optical fiber in a LAN.What model of 3750 Switch should we use to tackle this situation.I have learnt that WS-C3750X-24P should support it.Isnt it?
Can we use optical fiber SFP module to connect 2950 switches to core switch?Does Cisco 2950 Switch support optical fiber sfp module?

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Cisco Switching/Routing :: 2960 - Connecting Two Switches Using Fiber Cable

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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Cisco Switches :: Single Mode Fiber Link Between SGE2000P And Catalyst 2960?

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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Cisco Switching/Routing :: Single Mode Fiber Support For WS-3750 Switches?

Mar 5, 2012

I'm looking for switches that support single mode fiber connections and would like to know if "WS-C3750-FS-S Catalyst 3750 24 100BaseFX + 2 SFP" and "WS-C3750G-12S-S Catalyst 3750 12 SFP" can serve the purpose?

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Cisco Routing :: 3750x - Installing Single Mode Fiber / Switches Not Connecting?

Oct 22, 2011

Prior we only had 62.5u multi mode.I've got 3750x switches and new SM SFP and yellow fiber patch cables.  None of my links show connected.  No lights and trunk port interfaces show down/down.
Is there a special command you have to do on a port when using SM fiber?  Do you think I need cross over fibers?

Also, should I be able to see a laser signal light like MM or is SM a different frequency so it's not as visible as MM?

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Cisco Switching/Routing :: Switches Support SM Or MM Fiber Patch Cords WS-C2960

Jan 23, 2012

we recived the following switches.

WS-C4507R-ECat4500 E-Series 7-Slot Chassis, fan, no ps, Red Sup CapableWS-C2960S-24TS-SCatalyst 2960S 24 GigE, 2 x SFP LAN LiteWS-C3750X-24T-SCatalyst 3750X 24 Port Data IP BaseGLC-LH-SMGE SFP, LC connector LX/LH transceiver 

The current situation that all existing Fiber Patch Cords cables & fiber cables coming from field are multimode. So, I think we have a compatibility issues. We need clarifications from your, what are the options that we can do to resolve this issue.Can we connect the above switches to multimode Fiber Patch Cords cables?

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Routers / Switches :: Connect 2 Subnets With Two Switches And One Router Using SIM Software?

Apr 23, 2011

how to connect two subnets with two switches and one router using router sim software?

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Cisco Switches :: SG200 Switch To Allocate Bandwidth On 100 Mbps Fiber Internet Up-link

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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Cisco Switching/Routing :: WS-C2960S-24TS-S / What Type Of Fiber Optic Can Be Connected To New Switches

Jan 16, 2012

find out which types of fiber optic that i can connect to three types of switches. the setup that i have that there are:8 access switches (WS-C2960S-24TS-S), in each one there is two SFP connections.2 aggregate switches WS-C3750X-24T-S, in each one there is four SFP connections.and one core switches that has SFP card  WS-X4624-SFP-E? Note that the fiber optic that we have coming from filed are multimode.

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Cisco Switching/Routing :: 2950 / 3560 / Chart To Show What Modules Will Fit What Switches For Fiber Applications

Dec 12, 2011

Is there a chart to show what modules will fit what swithches for fiber applications ex 2950 and 3560 switches

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Cisco Switches :: 2960g Better Way To Connect All These Switches

Oct 23, 2011

I have 3 2960g switches that each have about 40 devices (pc's, printers, etc..) attached to them.  Each of these 2960 switches has one port connected to a port on a  "core" switch, which is a 3950g.  The 3950 has 3 switches and all of our servers (12) conected to it's ports.  The network seems to be running alright, however most, if not all, of the port lights on ALL switches blink wildly(at least I consider it "wildly").  Am I doing this wrong?  Is there a better way to connect all these switches?Also, this configuration is for our first floor.  The second floor has the exact same configuration, and the two 3950's (one upstairs, one downstairs) arec connected via fiber.

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Cisco Switches :: 500 Series 802.1x Requirements?

Oct 17, 2012

how to setup 802.1x on the Cisco 500 Series Switches.I have done the whole implamentation in the past with Catalysts and ACS.But would like to see a guide for the 500 series.Do we need the Cisco ACS or can we use RADIUS on Windows?

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Cisco WAN :: Latest IOS For Switches Series 3560

Dec 14, 2011

Looking for Information about Latest IOS Available for switch Series 3560, Guide the latest IOS sopprted Features Specification And Also Guide the Switch Minimum Hardware capacity Require to upgrade with the latest IOS.

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Cisco Switches :: 300 Series Snmp Backup

Aug 22, 2011

we are trying to do an automatic backup of our switches config trough script can easily backup cisco 2950-2960-3550-3560 using snmp.but I dont know the mib to use to backup the cisco small business serie 300 switches.

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