Cisco :: 5508 / 3750 - Connection Between Switches Using SFP Cable
Nov 14, 2011
I have to realize a connection between an 5508 WLC and 3750 switch using one SFP cable. I found on Cisco documentation some reference about two different SFP cables. The first one is CAB-SFP-50CM, but this is used to interconnect two 3560 switches. The second is SFP-H10GB-CU1M. This one has SFP+ transceivers on both ends which I don’t know if are compatible with the standard SFP ports that can be found both on WLC and switch.
My question is if I can use one of these cables in order to connect my devices, or if you know other one piece SFP cables.
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Jul 11, 2012
I have two 3750 layer3 switches and I need to connect them via stack cable.so if I connect them with the stack they will be act as an one switch, but for the configuration if I create a VLANs on the master switch (applied all the configuration on the master one) this configuration will be transfered to the slave one or I have to repeat the configuration that I did on the master.
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Jun 4, 2012
I am troubleshooting a fiber connectivity issue.Now I have two switches, one is 3750, and another is small biz 300 series switch. Both switch has a single mode smf gbic. Now I have two swtiches face to face and connect with a single mode cable. Do you think if I would get a link light on? Both ports are no shutdown.
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Nov 18, 2011
If I have two stackable switches one switch uplinks to one 6509 core switch and the other connection uplinks to another 6509 core switch, and also the other stackable switch does not connect to the core switches. Because I am using hsrp and also we are not using vss then one uplink to the core is not in used only ones is so then how does creating an etherchannel between does two uplinks to both core switches benefit me in anyway such as more bandwith and using both uplinks at the same time or I'm I wrong?
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Nov 14, 2011
If I have two stackable switches were only one stackable switch has two uplinks one uplink goes to one core 6509 switch and the other uplink goes to the other 6509 core switch can a Layer 3 etherchannel be used if each uplink go to a different core switch, by the way hsrp is running between both switches and also can you give an example how data will be routed from the stackable switch through the ethernetchannel to one of the core switch accross the WAN to another core switch?
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Jan 2, 2013
I want to configure Port channel for WLC 5508 and cisco 3750 Stack Switch. What changes I need to make on WLC and where?
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Jun 4, 2010
some reference material about configuring my WAG320N to use my cable modem via Ethernet port 1. I've seen it mentioned that's its possible, however I've been unable to sort it out myself.
And before you ask, I've brought the DSL router as I'm moving in the next 12 months and my new base will not have access to cable internet and I'll be reverting back to DSL.
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Feb 6, 2013
I have a situation where my Cisco 5508 did not come with SFP by default.
Can i use the SERVICE PORT to connect the WLC to the Switch
1. the controller has 8-SFP Slots
2. one service Port
3. On redundant Port
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Jun 18, 2012
We have implemented WLAN using Cisco WLAN controller (5508) and AP (AIR-CAP3502E-E-K9), i am trying to connect AP (which have gigabit port) with Layer 3 switch using UTP Cat-6 Cable having 24 AWG Wire Gauge.
What maximum length i can achieve by using above mentioned cable?
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Apr 28, 2013
Is there a difference in an ethernet cable and an Ethernet networking cable? I have an Ethernet cable and a 6 port splitter I am trying to connect. I have 4 ports in the router that are in use. When I connect them to the splitter nothing s working.
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May 28, 2012
We have PC's that connect through the Siemens IP phones and back to the cisco 3750 which is connected to our core 6500 via L3. The phones use a voice VLAN and the PC's use another VLAN. The whole setup seems to work ok but I was just wondering if the QOS was configured correctly. Our current config on our 3750 switches are mls qos trust dscp on the port that connects to the phone and PC and mls qos trust dscp on the L3 links. The phones are configured for "QOS L2/L3"From the reading I've done so far it seems that any ports connected to a L2 device should be set to cos and not dscp?
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Oct 12, 2012
We are running CISCOWorks 4.0 (LMS).I can connect to and update the majority of my 3750's but I have about 20 that result in failure when attempting to update the image on those devices.The return error is "SWIM50001: Cannot connect to the device "IPAddress" using SSH and TELNET." When running "sho ssh" you see connection for the current ssh tectia login but nothing pointing to the ciscoworks device.When I run "sho ssh" from a different device I see both connections, 1 from my desktop ssh connection and the other showing username of ciscoworks.I ran the Discovery tool, again, but no joy.I was looking for a manual way to add that connection but again nothing. How to make the ssh connection between ciscoworks and the edge device?As I said I can ssh from my desktop and manage the box that way but ciscoworks simply won't allow it.
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Feb 13, 2013
We have 2x Cisco 3750 WS-C3750-48PS-S and 1x WS-C3750-48PS-E in stack mode. They all work well. Currently they have c3750- ipservicesk9-mz.122- 25.SEE2.bin on them which is deffered by Cisco. What would be a good alternate, stable version for my switches? Switches have 16MB flash and 128mb Ram.
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Feb 20, 2013
I have Prime 1.3, two WLC 5508 and 8 switches 2960s I try update my devices through Prime, but I can't.
When I start "Upgrade Analysis" and select switch (Catalyst WS-C2960S-24PS-L) and image (c2960s-universalk9-mz.150-2.SE2.bin) then click to "Run report"
Prime shows me that "Image not Applicable for this Device" I try different images, but it does not work.
And with WLC 5508 the same trouble. Why Prime can't do right analysis and updates devices?
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Apr 13, 2013
We are planning to implement the redundant physical connection from 5508 WLC to not stacked 3750 switches. The sheme is attached.
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Dec 6, 2012
I have the following set up, at one of our sites:What I would like to do is take non 10.x.x.x web traffic, and pipe it through the ISP2 link, and keep all other 10.x.x.x traffic over the main ISP1 link. I would like to set this up on the L3 3750's that we have. Here is my configuration for the 3750's (IP's have been changed for security):
track 222 ip sla 222 reachability
track 223 ip sla 223 reachability
ip access-list extended INTERNETTRAFFIC
permit tcp 10.1.1.0 0.0.1.255 any eq www - Internet LAN subnet
permit tcp any 10.1.1.0 0.0.1.255 eq www
permit tcp any eq www 10.1.1.0 0.0.1.255
[code]....
I'm applying the policy route-map to the VLAN interface, but do not see any traffic, once I apply the interface. I'm not that experienced, with route-maps?
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Mar 8, 2012
I have 3750 stack with 4 switches.I am trying to make change some port to new VLAN, but switch 2 & 3 new change never works, the ports stick with old VLAN. Other two switches works as I expected on new changed VLAN.Tried to reboot, no progress.
#Show VLAN command confirmed the VLAN changes are made.
#show switch detail
Current
Switch# Role Mac Address Priority State
--------------------------------------------------------
1 Member 0019.e752.xxxx 1 Ready
2 Member 0015.f9bf.xxxx 1 Ready
[code]......
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Oct 17, 2012
I have been asked to do a network survey at a client. They are using the Cisco SGE2000 switch, which is new to me (used to working with 3750 switches). They seem to have lost the username/pasword for one the switches. Is there an way to recover from this, without reseting the whol config (not sure they even have a backup) ..
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Jul 9, 2012
We are having a problem with our ACS and switch configuration.Basically if the switches lose connectivity to the ACS server the switches completely lock up, you can’t even console onto the switches.We want them to use the fall back username and password when this happens.
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Nov 15, 2011
I have a 4 member stack of 3750's. We would like to take advantage of wccp and we understand that we will need to upgrade our switch licensing from IPBase to IPServices. My question is do we need to pay for a license for each member in the stack or does one IPServices license upgrade cover the whole stack?
WS-C3750G-48PS
WS-C3750G-48TSWS-C3750G-48TSWS-C3750G-48TS
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Jan 8, 2013
I have a question in regards to configuration I'm planning to implement. I currently have 2 x 3750 running in a stack. I would like to add 1 x 870 router connected to both switches.It's important for me that 870 is always available (it will only be used as a backdoor for our management network through WAN) but I don't want it to participate in any switching (including switching for management network unless it's going through this backdoor WAN). Do I need to configure spanning tree on all switches or stack is automaticly working as a 1 logical unit?As router is only using 100MB/s connection, how I can prevent this router from switching packets with other switches?
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Jan 24, 2013
I have a pair of ACE 4710 and I think I have all the failover configured correctly and it all appears to be working. My question is regarding setting QOS on the physical interfaces that are part of my port channel. I have qos trust cos enabled on all the interfaces in my port channel. These interfaces are connected to a 3750 swith. Do I need to configure QOS on the 3750 to allow the COS bit to pass through my 3750 to my peer?
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Feb 20, 2013
Switch A connects to Swich B and C using port channel. I am going to bring down one link on each.
switch A is server farm , switch B and C are core 01 and 02 . and all are 3750 switches.
1. what will be the impact on the network in terms of spanning tree recalculation
2. what duration are we talking about until the spanning tree convergence happens?
3.I plan to shut down the link from CLI to bring down the links
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May 4, 2011
Is it possible to trunk a SF300 switch with a 3750 switch? If so how? Whenever I turn trunking on the 3750 port I lose connection to the SF300.
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Apr 17, 2012
I am running LMS 4.1 and have an issue with Inventory: I have a stack of four 3750 switches, but only two of them are showing up in CiscoView. If I right-click - Topology - Device Report ; I see all four switches. The switches are standard 3750 switches and should be included in the Device Packages for CiscoView
Also if I go Reports - Detailed Device ; I see the same two devices show up under Module Information. However when I go to Reports - Device Attributes ; I see all four devices correctly displayed.
I have tried and deleted and added the stack in CiscoPrime, but with same result.
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Nov 19, 2007
I would like to deploy this kind of configuration (See attached network plan).My questions are:
1) is possible to enable etherchannel links between different switches, without stacking links?
2) how is the expected bandwith consumption when I enable etherchannel PAgP or LACP protocol?
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Jul 27, 2011
A customer is expanding their network into another wing, and they have a good number of existing Small Business switches (specifically the SGE-2010P - [URL] that they're interested in possibly deploying. They have a full-blown Cisco infrastructure and voice deployment (Cat 6500 core switches, 3750 switch stacks, Communications Manager w/ over 1,000 phones, etc.).
The general concern is whether there is ANY known issues or concerns with trying to mix/integrate the Small Business equipment with non-SMB infrastructure. Looking at the datasheet for this switch, it's clearly PoE, supports QoS, although it doesn't specifically indicate it can provide a voice/auxiliary VLAN for a phone detected by CDP - that would be a big deal. So basically, "a switch is a switch", and I'm just posing this question to make sure there's no reason (technically or from a support standpoint) that we would not recommend integrating these.
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Feb 10, 2013
I have Cisco 5508 Wlan Controller and its having 6 Fiber Ports and I have AIR-LAP1131AG-E-K9 Access Point. Can this Access Point will work with this Lan Controller? Can i connect 3 switches to this wlan controller?
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Jan 8, 2013
I am trying to implement in the lab. I have 2 switches 3550 and 3750. my questions are:
1. why i can't see vlans in the running config on switch 3750 even after i created 3 vlans?
2. the 3750 is power over ethernet switch and i am trying to connect 3550 and 3750 thru cross over cable trunk link and the ports doesn't show up no light nothing. is it the right way of cabling.
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May 8, 2012
We have two dedicated racks for our DMZ. We need to connect them to a firewall. We do all the cabling inside the rack, so each of them must have a top of rack.Problem is, switch in rack 2 will be connected to rack 1 and then to firewall, so if switch 1 fail, we lose both of them.
I would love to stack them like 3750 but I don't think there is stack-wise cable long enough to connect two racks (and I suppose this length isn't supported by technology).We have only one port left in the FW.
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May 7, 2011
Is WAN Optimization supported on Cisco ASA5520 Firewall and Cisco 3750 Switches. We need to add/enable WAN Optimizer functionality to make 3PAR data replication?
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Sep 2, 2012
Is it possible to use Port Security mechanism between two switch (3750 or 3560) ports while trunk has been configured? If it's not possible, is there any other way to ensure that no other Switch can be connected other then the one switch which has been configured/placed by a network engineer?
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May 17, 2011
I need to move the client machines off of the 3750 (and their DHCP dependency on it) to the SGE2010 and absolutely route their internet traffic out through the outside interface on the 5505. They must also be able to communicate back into the internal environment in order to communicate with the production servers.
The clients currently use .254 addressing through a dumb dell switch to the 3750 but I am trying to migrate them over slowly to the .253. I know that the 2010 will not do DHCP, so I am putting a DHCP server on that switch right now. The 5505 won't let me add an additional nameif statement onto one of the other eth0/x interfaces and I'm not sure if that has anything to do with it's capabilities to act as a DHCP server (it's not an option in the ASDM) or it's ability to serve as the internet gateway for the 2010 clients. (Side notes: The 5505 has a base license and is currently also connecting 1 site to site VPN. As is the 5520, so all of it's interfaces are used as well).
I statically assigned a moved client with a .253 address and plugged it into the 2010. I have tried giving the 2010 both a .4 address and a .253 address but neither will allow me to ping any of the addresses on the 5505. The 2010 shows automatic routes to the two subnets and I set it's default route to 253.1. The link between the 2010 and the 3750 works - clients receive a .254 address from the 3750 and can get out to the internet via the 5505 and reach the production servers as well.
Why won't the 2010 see the 5505 as a gateway and allow clients to get to the internet and also traverse the 3750 when they need access to the production network?
The reason why I dont' just connect the two swtiches and call it a day is because I also need the production servers to ALWAYS go out/receive web requests via the 5520 outbound/outside interface. I'm having such a hard time wrapping my head around why i can't get my clients moved over to the new switch, I haven't even grasped how I'm going to do that yet.
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