Cisco Switching/Routing :: SF 302-08 Fiber Termination Is Multi-mode LC Duplex

Jan 2, 2012

I am doing an small project, I have to connect 4 cisco switches SF 302-08 (1 GBIC each one) to a core switch SGE 2000 (4 GBICs).  Because of cable length I have go connect all 5 switches with fiber. The fiber termination is multimode LC duplex. My confusion is on the mini GBICs. There is compatibilities issues i been reading. [code]

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Cisco Switching/Routing :: SFP-10G-SR With Multi - Mode Fiber?

Jul 10, 2012

Can I use the SFP-10G-SR 10g interface woth Multi - Mode fiber?

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Cisco Switching/Routing :: WS-X4306 What GBIC Is For Fiber Single Or Multi Mode

Jul 18, 2012

The module  WS-X4306, support  fibber fiber single mode ó fiber multi mode? what GBIC is for fiber single mode or fiber multi mode?

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Cisco Switching/Routing :: Duplex Mode On HSRP Routed Port On 3750

Nov 15, 2012

What should the duplex mode to be set on a routed port gi0/21 that are running HSRP ? I try setting the gi0/21 to full, but it caused the port to be down. The only way for the port to be up is setting it to half duplex.
 
Cisco 3750 Switch
==============
interface GigabitEthernet0/21
no switchport
ip address 10.200.104.34 255.255.255.248

[Code].....

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Cisco Switching/Routing :: 6509 - In Auto Negotiation Mode It Comes Up In Half Duplex

Jun 11, 2012

We are facing to an annoying issue. We have a 6509 running in Catos 8.3(4) with WS-X6548-GE-TX, WS-X6348-RJ-45 and WS-X6148-RJ-45. When we configure the mode in auto negotiation, it comes up in half duplex. We need to configure the speed mode at 100Mbit/Full to make it work. But if the chassis or port restarts (not the server), the link becomes half duplex. This happens only on module in Gigabyte like WS-X6548-GE-TX.

Cable have been replaced but does not work. It is not happened on another chassis running on IOS 12.2(18)SXF17b with WS-X6548-GE-TX.

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Cisco Switching/Routing :: Does WS-C3750-12S Support Both Single And Multi-mode

Oct 11, 2012

I have a new building to add to our campus and I have been encouraged to run single mode fiber. All of my other buildings are connected with multi-mode fiber. I just want to make sure i will not have an issue if I run single mode to the new building with SM SFP's.

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Cisco Switching/Routing :: 3560 - 802.1x Multi-auth Mode And Downstream Switches

Feb 20, 2013

I need to support a bunch of security cameras mounted on poles in our parking lot and an IP intercom system mounted on some gates. Because of environmental factors the switches at the poles need to be hardened and the spec from the vendor installing the gear is for GarretCom Industrial unmanaged switches which would make sense.
 
However when Information Security got wind of this scheme they (probably correctly) are requiring me to secure the ports that these unmanaged switches connect to. I have 2 choices: port security w/ MAC filtering or 802.1x. Because all the devices at the poles and gates support 802.1x and because I may need to go out there to troubleshoot stuff (and will invariably forget to add the MAC of whatever device I am using) I would prefer 802.1X multi-auth mode.
 
Problem:
When I ran a quick test on a test 3560 running some 15.0.1 code I could get a laptop to connect via 802.1x EAP-TLS successfully if it was directly connected but when I connected the same laptop via a dumb Netgear switch I confiscated from a luser  it would not connect. The 3560 error said that the laptop never responded.
 
Question:
Before I spend a whole lot of time on this, is this something that should work? I don't see any practical use for the feature if it won't however the documentation I am using specifically mentions downstream hubs but I am not sure if they mean real hubs (which I don't think are even made anymore) or if they mean unmanaged switches.
 
I plan to try a couple of different unmanaged switches tomorrow and digg a little but I would like to know if I am wasting my time on something that will never work or if there is a little gotcha somewhere.

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Cisco Switching/Routing :: 1310NM / SFP-10G-LRM Over Single Mode Fiber?

May 23, 2012

Using SFP-10G-LRM with single mode fiber?  We have 1310nm.

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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 Switching/Routing :: 3750X / 6509 - Trunking Over Single Mode Fiber

Oct 26, 2011

I'm having a problem with some new gear and can't seem to figure it out.  I have a 3750X-48P-S with a C3KX-10G-NM using SFP-10G-LR transceivers and I'm trying to trunk that with a 6509 that has a X2-10G-LR transceiver over single mode fiber.  This is not working.  Cisco TAC says the SFP+'s that we just got brand new are both bad and we need to order new ones.  I find that hard to believe but who knows.
 
The switch recognized the module and I tested all 4 ports in gigabit mode using GLC-SX-MM transceivers, all worked great.  I have the SFP+'s in tengig1/1/1 and 1/1/2 as they should be.  There are no other SFP's in the module either.
 
When I do a sho int tengig1/1/1 and 1/1/2 the media type doesn't show the transceiver that is installed like it does for the GLC-SX-MM ones.  Maybe it's not supposed to or maybe it just doesn't recognize them and it's a hardware issue.

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Cisco Switching/Routing :: WS-C3750-24FS-S 100baseFX Ports Will Not Work Over Single Mode Fiber

Feb 8, 2012

We've just purchased a WS-C3750-24FS-S, only to find that the 100baseFX ports will not work over Single Mode fibre, backhaul links. Any way or a device that convert from MM to SM?

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Cisco Switching/Routing :: 3945 - Connecting To 100M Single Mode Fiber Link SC To LC Conversion

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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Linksys Cable / DSL :: WAG320N With 100 Mbps Fiber Is Not Establishing Full Duplex Connection

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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Cisco Firewall :: ASA5510 Single Mode / Move To Multi Context Mode

Sep 16, 2012

I got an ASA 5510 system currently in single context mode, with CSC SSM installed. Single ISP uplink to internet, no VPN. And now customer would like add another ISP uplink, without invest another box for HA.What come across my mind is make the current box into multi context. There's some area i need to concern and also need yours perspective on it.
 
Question 1: For making the firewall into multi context, am i need to do it from scratch, issue mode multiple command. Then rebuilt the current production config into one of the context, then another context meant for the new IPS uplink, and one admin context?
 
Question 2: For CSC -SSM licensing requirement, model ASA 5510 with security plus license is able to support 2 context. So if i split my firewall like what i mention in question, what exactly number of context do i own (admin, context A, context B)?
 
Question 3: For CSC-SSM module in multi context mode, so the management port of CSC SSM must attach at admin context?
 
Question 4: After configured all the policy and traffic to scan, how exactly i should do in order apply this policy to the interface?  Should i only enable at admin context, then firewall service-policy rules, and apply it global, OR should i also do the same action on context A and Context B?

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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 Wireless :: Duplex Mismatch With A AIR-LAP1042 In Bridge Mode

May 16, 2013

[code] Can't find any wrong with the switch ports and AP's that can result in Duplex mismatch.The only difference I can find is the AP that is in all duplex missm. log's is used for other Mesh AP's to connect to.

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Cisco Switching/Routing :: GLC-T In C3KX-NM-10G - Full Duplex Does Not Work

Jun 4, 2013

I have C3750X with C3KX-NM-10G, and have-T SFP in slot 3 ( means it is not in SFP+ slot ).I need to set speed&duplex hard to 100/Full, but if I do the link goes down. I have the same settings on the other side, only IOS version is different.I tried other speeds - 10 and 1000, but no one works with Full. When I change duplex to Auto it works fine.The reason why I am doing this on C3KX-NM-10G is because I need to use NetFlow and cannot use the chassis' copper port. At the moment the ports are connected through a copper patch cord, but in full production there will be a radio link in between that requires 100M/Full to be set hard.I am trying to search for any document that would describe this limitation, but cannot find any. Also port capabilities do not indicate duplex could not be set to full:

show interfaces g1/1/3 capabilities
GigabitEthernet1/1/3
  Model:                 WS-C3750X-48P
  Type:                  10/100/1000BaseTX SFP
  Speed:                 10,100,1000,10000,auto
  Duplex:                half,full,auto
  Trunk encap. type:     802.1Q,ISL

[code]....

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Cisco Switching/Routing :: 2950 Cannot Seem To Correct A Duplex Mismatch

May 14, 2012

I cannot seem to correct a duplex mismatch issue.I have a Cisco 2950 switch connected to a Cisco 2621 router.  I am running a per-interface Vlan.  I have two fastethernet ports and one NM-1E card installed on the router.  One fastethernet port is connected to my gateway router, the second fastethernet port is connected to my switch for one Vlan. The NM-1E Ethernet card is being used for the second Vlan which consists of nine IP cameras.  Though the cameras on the Vlan are working fine.Now, the NM-1E card is set to half-duplex.  I know that I should be using a fastethernet module like a 1FE 2W or a 2FE 2W card, (which I have,) but the router does not recogonize either one of these cards when they are installed, and yes, they have been confirmed as good cards.
 
Using Router-on-a-Stick configuration is out due to the bandwidth contention besides the fact that the router I am using it on will not handle this due to the flash being an older version.I have forced the switchport to half duplex, setting the speed to 10. I was getting fewer error messages at first, but they soon increased back to the frequency that they began with.I have set the switchport to duplex auto, but this failed to resolve the issue.Obviously, I cannot force the switchport into duplex full since the NM-1E interface is set to half duplex.  Can the NM-1E card be configured to full duplex?  I can't seem to find any documentation showing where it can be forced to full duplex mode.Could nine IP cameras just be too much for both the router and switch to handle?

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Cisco Switching/Routing :: Duplex Mismatch Between 2950 And 4503

Jul 8, 2012

I have a 4503 switch (in L2 mode) running 12.1 hooked into a C2950 running 12.1, using regular 4 pair Cat5e cables to connect between them. The 4503 has Gigabit port 2/1 trunking to the 2950's Fa port 0/13.
 
When I set the duplex mode to DUPLEX FULL and SPEED to SPEED 100 on both switches (for their trunk ports) the link fails, and my 4503 loses connectivity (since it gets it from the 2950).
 
Here is my config from the switches (per description):
 
The 4503:
 
interface GigabitEthernet2/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,2,100-140

[Code].....
 
Note, this is the only mode that works (which seems to work fine, but I get TERRIBLE throughput for anything that goes over the 2950.

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Cisco Switching/Routing :: 3750G-12S-S / Cannot Set Int G1/0/1 Into Speed 100 / Duplex Full

Aug 12, 2011

3750G-12S-S.Problem description:I had a WS-3750G-12S-S in production with a defective fan tray and needed to change it.I faced to trouble with inter g1/0/1 on the new switch( it worked fine on the old).
 
Here the config for old switch:

interfacigabitEthernet1/0/1
  switchport trunk encapsulation dot1q
switchport trunk allowed vlan 111-113,278,790
switchpmode trunk
speed 100

[code]....
 
even if I configure  speed nonegotiate that does not work.

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Cisco Switching/Routing :: 6500 - Can Native VLan Or Duplex Mismatch

May 25, 2012

1 week ago, I got a call from a client that reported a network outage, the client told me that, 3 switch has crashed he try to console but it just hang. I ask him, did you change something? he said he didn't change anything, he just pluged a nortelswitch to the cisco switch number 9, but that switch doesn't crash like the others (3,4,8). I check the uptime, and yes the switch never been powered off..
 
   the topology look like this
 
              ____ 6500  ____
             /      /    |           
           1      2    3    4       5  ...... 9
 
 
the vlan is end to end vlan, so vlan span between all those switches. transparant. this is collapsed topology, core and distribution is the 6500 itself all of the 1-9 access switch are in the same rack, with no loopguard, and bpdu guard configured. and connected to the core using etherchannel. the problem is there is no log available to start the troubleshooting/investigation.

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Cisco Switching/Routing :: 4507 Switch Port Duplex Message?

May 3, 2012

what is causing " Gigabit port is restricted to full duplex" while trying to hard code speed/duplex on a 4507 switch port?

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Cisco Switching/Routing :: 3560X - Using 10 / Duplex Half On Gigabit Port Not Working?

Sep 24, 2012

We recently upgraded the switch to which an old security device was connected.  It worked fine on the old switch's FastEthernet port, which was configured for speed 10 and duplex half, as that is what the device required. The new switch is a 3560X with all Gigabit ports, but the security device's port, also configured with speed 10 and duplex half, does not connect properly.As a temporary test, we daisychained another switch that has FastEthernet ports, and the security device works again.Is there anything else that needs to be added to the configuration, when using Gigabit ports at 10/half?

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Cisco Switching/Routing :: Can't Configure To 100 Full Duplex One Port From Target WS-X6724-SFP

Nov 2, 2011

I would like to know why i can't configure to 100 full duplex one port from target follow:  WS-X6724-SFP

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Cisco Switching/Routing :: 3550 - Hard Code Speed And Duplex Settings

Mar 31, 2013

I am trying to hard code the speed and duplex settings on interfaces gigabit 0/1 - 2 interfaces with out success.

DSW121(config)#interface range g0/1 - 02
DSW121(config-if-range)#speed ?
Nonegotiate  Do not negotiate speed
[Code]...

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Cisco Switching/Routing :: Duplex Mismatch Between 2960 (LANBase Image) And 6506

Jan 21, 2010

I have the following issue; I am getting a duplex mismatch between a Cisco 2960 TT-L Switch running IOS 12.2(35) LAN Base Image (Gig0/1) and a Cisco 6506 Switch running IOS 12.2(33)SXH Adv IP Services (Gig2/19).
 
I have tried several combinations of the duplex/speed settings on both sides but the only that works is setting duplex/speed AUTO on the Cisco 2960 which ends up autonegotiating to HALF duplex and 100Mbps.

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Cisco Switching/Routing :: Catalyst 3750 Multi-cast VLAN Routing

Oct 28, 2012

I have a network with several catalyst 2960 switches and one catalyst 3750. I have created two VLAN and set up the proper routing and everything is working fine there. I have a client/server application that used multicast in the initial start up for the client to determine available servers, the issue is one of my clients is on a different VLAN then the server. I am able to route the multicast using MVR as long as both the server and the client are plugged into the 3750 by creating a static route, making the server a source port and the client a receive port. Unfortunately I need the client and the server plugged in to different 2960s. My question is how do I establish multicast routing between the two and perferably do it dynamically (always route multicast traffic from one VLAN to another).

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Cisco :: Possible To Install LMS 4.2 In Multi Server Mode

Mar 15, 2012

Is it possible to install LMS 4.2 in multiserver mode but with possibility to select installed components/applications? I'm talking about Solaris version. I can't see such an option. It will install all the components on every server which I don't want to. We have LMS 3.2 working in such setup: one server with most major components, other running just DFM and third one with only HUM installed.

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Cisco WAN :: ASA5500 Transparent Multi Mode Firewall

Feb 4, 2012

Recently i have configured ASA5550 with 2 Contexts in Transparent mode. Traffic can pass through a single Firewall context but through both contexts it couldn't.

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Cisco Switching/Routing :: Force Gigabit Ethernet Port To Be 1000 Full Duplex In Catalyst Express 500 Series?

Sep 1, 2007

Can we force the Gigabit Ethernet port to be 1000 full duplex in Cisco Catalyst Express 500 series?

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Cisco Switching/Routing :: Multi Tenant Security On 3750

May 21, 2012

I have a 3750 switch with IP routing enabled and have lots of VLANs configured on this switch.What is the best way to prevent VLANs from talking to each other?At the same time, hosts inside their respective VLANs should not be blocked from reaching any private networks as they could be doing some L2L with another site.Blocking the VLANs from accessing/telnetting the switch was very simple as I was able to do this in the VTY line section. However blocking VLANs from accessing the other VLANs on the switch seem to be hard and I think there has to be a recommended way of doing this. For example, if hosts in one of my VLANs, in this case VLAN-204 (10.10.10.0/24) want to hack or scan hosts on one of my other VLANs, in this case VLAN-330 (10.20.20.0/24), how can I accomplish this without blocking VLAN-204 hosts from accessing another network they have a site to site tunnel with with the same destination address of 10.20.20.0????

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Cisco Firewall :: ASA 5515 Transparent Mode / Multi Context And VLAN?

Jun 1, 2013

On ASA  5515  it shows it is in transparent mode  and it has multi context.As in transparent ASA  we know it has single Management IP address.This ASA is connected to  one switch  on two ports gi2 and gi3.One port carries vlan say 800  to the ASA.Other port carries vlan 500 from the ASA  to switch But when i log onto ASA  and do sh run it shows no VLan info there.

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Cisco Switching/Routing :: GNS3 Multi-link Bundles To Different Routers

Apr 30, 2012

we are moving to different providers. We currently have multiple sites that have MLP bundles going to our current provider. We are trying to limit our network disruptions by creating a new MLP bundle group and connect it to the new provider, but are having no luck. In a GNS3 lab I have setup I am able to keep my existing MLP bundle up/up over the current provider network. When I attempt to bring up a new MLP group to the other provider my MLP does not come up and keeps going up/up then down/down and shows inactive. Is it possible to have one MLP group go to current vendor router, then create another MLP group and go to the other router?

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