Cisco Switches :: SG200-26P Flashing Green Status No Access No Reset

Mar 18, 2009

I have a 1 month old SG200-26P - the green status LED is blinking constantly (> 30 minutes), I cannot access the webGUI, nor is it responding to ping. I have tried resetting via holding reset for > 10 seconds with no effect, the status/activity LEDs are still illuminating against all connected ports, excluding any of the PoE ports which are running a couple of cisco IP phones. I've tried accessing the device via both the static IP I configured, and the default IP.
I have disconnected all ports, then powered on the device, but same results...
Do I have a dead switch? Anything I can do other than return for warranty claim which is going to be last resort due holiday period and leaving the customer offline for extended period.

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Cisco Switches :: SG200-26P - Flashing Green Status - No Access - No Reset

Dec 16, 2012

I have a 1 month old SG200-26P - the green status LED is blinking constantly (> 30 minutes), I cannot access the webGUI, nor is it responding to ping. I have tried resetting via holding reset for > 10 seconds with no effect, the status/activity LEDs are still illuminating against all connected ports, excluding any of the PoE ports which are running a couple of cisco IP phones. I've tried accessing the device via both the static IP I configured, and the default IP.
I have disconnected all ports, then powered on the device, but same results...Do I have a dead switch? Anything I can do other than return for warranty claim which is going to be last resort due holiday period and leaving the customer offline for extended period...

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Cisco Switches :: SG 200-08 All LED Lights Flashing Green After Power Failure

May 5, 2012

Thinking back, about a month ago I updated the firmware (I can't check version at the moment). The switch has been working fine since then. Today I needed to move some power cables and the switch lost power. Now ALL of the LED lights are flashing green and I can't access the switch. I've tried setting a static IP on my laptop to, mask, and accessing the switch on, but there's no response. I've tried holding in the reset button for at least 30 seconds while the switch is powered on, AND while powering it on. None of that has worked. Also when I first power it on, the system LED flashes orange very quickly for a second or so, then all of the LEDS start flashing green.

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Cisco Switches :: No Access After Reset SG200?

Apr 27, 2013

I have a problem with my SG200, maybe more than one.
I tried to update to this morning.  It succeeded and the switch was restarted.  After the restart I could no longer log into the switch.  I tried to reset the switch but it still will not let me log in.  I also tried to log into the switch using the forllowing method but I still cannot log in.  I unpluged everything, held the reset for at least 30 seconds, waited 3 minutes, plugged a computer in and set it up to see the switch.  All worked there and the login page appeared.  It still would not take my login dredentials nor wold it that the default credentials. I has access through the switch but connot configure anything.

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Cabling / Cards :: Green Lights Flashing In Sync?

Jul 10, 2011

There was a problem with one of our servers. We were unable to connect to it remotely. We restarted the server. Still we were unable to communicate with it. Static IP is provided.

In the connections settings, it showed the send and receive as 0. I noticed the network card lights. Both were flashing green in sync, like twice in one second. I removed the cable and funny thing was, it was still blinking non stop in the same way. I plugged the cable back in and took back out, the same result. After a second restart of the server, it started working normally and i was able to communicate with the server.

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Cisco Wireless :: 1131AG LWAP Status Led Yellow And Other Blinking Green?

Apr 10, 2013

I have a problem with three AIR-LAP1131AG-E-K9  that joined the controller and the status led turns to yellow after joining the controller while other LEDs are blinking green.The APs has no coverage at all although the WCS shows that there is coverage and the 4400WLC shows that the AP interfaces are UP. (The ethernet interface and tha 802.11b,g radio interface is up).The SSID broadcast is enabled.On the switch the interface is up and there is traffic going in and out of the LAP.I tired power reset and factory reset for the APs but the problem remains the same.

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Cisco Wireless :: 1130 Showing Status Light Flashing Orange

May 7, 2012

I have a question, I have an ap (cisco 1130)  that began to get the status light flashing orange and light Ethernet and radio are off.I did a factory reset and it was ok ... past 3 days the problem has happened again.I changed the ap with a new but the situation remained.I tested the wiring and everything is ok.the switch port is set up correctly.

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Cisco Switches :: CLI Access To SG200 Switches?

Dec 27, 2012

I just picked up a pair of 18-port SG200s, and I'm trying to figure out of there's some secret trick to getting CLI access to them?  I've upgraded to the latest version of firmware ( hoping that may work, but no luck.I can tell the guts to support a CLI are there, because writing the config out to a TFTP server shows identical an identical config style to the SG500 I have here.Is there some way to enable it?

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Cisco Switches :: SG200-08 And SG200-08P Fail To Hold Or Update Date / Time

May 24, 2011

SG200-08 and SG200-08P fail to hold or update Date/Time.(New installation for a UC320 setup.)I've got both an SG200-08 and SG200-08P that are failing to maintain date/time when set with "Use Local Settings".  Every restart/powercycle causes them to reset to Dec 31 1969.  Other settings save fine.I first tried to set time via SNTP Unicast using a variety of public time server addresses including the 3 hard coded to the SG200-08 firmware:
Sadly though it always just shows  "Active Server  Server Host Address:"  and continues having 12/31/1969 as the date.  Both after a config save and a reboot.I can ping the NTP servers just fine from the switches either by IP or by hostname.At this point I've decided that I must be missing something simple. At least I hope so... otherwise it's a firmware bug which means waiting for a fix.Other devices behind the same firewall/gateway (RVS4000) are updating NTP

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Cisco Switches :: SG200-18 To C2960S Trunked - SG200 Cut Off The Net

Apr 29, 2012

how to connect our new SG200-18 to an existing Cisco network, in particular a C2960S.Here's what I've got:
<----- Rest of network ------- C2960S ----------- SG200 ----- (PC connected directly to the SG200)
On the C2960S-side here's what I've got on the corresponding interface:
interface GigabitEthernet1/0/1
switchport mode trunk
On the SG200-side I've set the IP-address and default-gateway accordingly, however:From the SG200 I can't ping any other host on the same IP-subnet as the switchFrom the SG200 can't ping the default-gatewaycan't ping from any other host or the default-gateway *to* the switch But:On the SG200 I've got plenty of MAC-addresses under "Dynamic Address Table" - however only MAC-addresses that belong to the management-VLAN of the SG200 (i.e. VLAN9 in my case)The MAC-address table on the SG200 even includes the MAC-addresses of hosts on the same VLAN I tried to ping without success. For example: I tried a PING from a host having a MAC-address of 00:19:bb:31:91:30. This MAC shows up in the arp table of the SG200. To cross check I connected a dedicated PC to the SG200 and assign it an IP-address out of the management-LAN-range of the SG200 - in this case I can access the switch (i.e. PING, WEB etc.)So to summarize: Connectivity is OK when going from directly connected devices to the SG200. No connectivity from devices that are behind the C2960S towards the SG200 and vice versa. (The problem is definitely not with the C2960S-side since we've got plenty of them hooked together without problems.) I'm enclosing the screenshots of the corresponding definitions on the SG200.

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Cisco Switches :: Very Slow Transfers Between SG200-18 And SG200-8?

Apr 16, 2013

I'm baffled by the poor performance that I'm seeing when passing traffic between my two Cisco SG switches.
The configuration is as basic as I can make it, no VLANs, QoS or bonding.  Both have been updated to current firmware as part of the troubleshooting process.
When I transfer data within one of my switches I see 50/60Mb/s. When I pass the same traffic between both switches I see 0.6 Mbs/ or less.
I have tried to eliminate every possible factor including switching out the cables.  No success.

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Cisco Switches :: SG200-18 - Remote Access

Aug 3, 2012

we just bought a Cisco SG200-18 to replace our Linksys DLM2008 switches. Now we face a problem with remote desktop between our Win7x64 boxes.

Remote access is abysmally slow, but file transfer speeds seem to be normal. All ports are on Gigabit setting, jumbo frames disabled. The switch on the latest firmware.

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Cisco Switches :: SG200-08 Configuration With LAG And Internet Access?

May 23, 2013

I have the SG200-08 switch that I am using for Link Aggregation between a Synology DS713+ NAS and my HP Z820 workstation.I have ports 1 and 2 set up as LAG CH1 connecting to the HP and ports 7 and 8 as LAG CH2 connecting to the NAS. I have AT&T Uverse as my Internet provider so I have one cable coming from my Uverse router to the Cisco switch to provide Internet access. I also am coming out of my Cisco switch to my Apple Airport Extreme providing Wi-Fi to my house in addition to wireless access to the NAS. I have no problem seeing and connecting to my NAS drive but my issues comes with regular internet access to my computer.I have created a Team with two of my Intel NIC's and connect just fine to the NAS. My Internet on the other hand is completely hit or miss.Some times it shows Internet access and will connect to web pages just fine and other times it will say no Internet. I have tried shuffling around ports, enabling/disabling certain settings that I have either read about online thinking that it might be one of my problems but at this point all of this IT lingo is making my brain bleed. I don't know if my basic settings are correct or if I need to change one simple thing to get this whole thing working.

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Cisco Switches :: SG200-08 - 802.1x Unauthorized Access / MAC-authentication

Jun 14, 2011

I use 802.1x to authenticate the company-network devices - authentication works fine. I do not use dynamic V LAN --> static V LAN-config on 802.1x ports --> authenticated devices have access to the network.

Is it possible to use a guest-V LAN? un authenticated devices should connect to an other v lan than authenticated devices.
One more question: Is MAC-authentication also possible?
Switch: SLM2008T V01
Firmware is:

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Cisco Switches :: SG200-26 Switch VLAN And Internet Access

May 9, 2012

I start writing this post telling you that I'm not a qualified network admin, so I beg your pardon if I do not use appropriate terms in my question. Also my english in not so good since I'm Italian and my english in almost scholastic.
This is the "story" :
I bought two switches as described above and actually I have to create 2 VLANS as described below :
VLAN id 2     name "Service_A"   ports 1-4
VLAN id 3     name "Service_B"   ports 7-9
all other ports can stay in default VLAN1.
my network infrastructure have some other very simple swtiches connected and 1 soho router (static ip with dhcp active and ip pool address released from to 200.
the SG200-26 have static ip   and


I need VLAN for privacy matter so all computer connected to ports in VLAN2 cannot see nor enumerate PCs and resources on other VLANs, but I also absolutely NEED that all computer in every ports (and every VLAN even default VLAN1) can access the internet.

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Cisco Switches :: SG200-18 - Losing Access On Random Ports When Creating LAG

Aug 3, 2011

I  just bought a SG200-18 in order to use LAG between a backup server and  multiple computers and servers. Servers are supposed to all use 2 links  and computers only 1.
As  soon as I activate LAG on port 2 and 3, no matter what is connected on  the switch I lose access to the switch interface (luckuly, it's still  working on port 17 for a strange reason) and all computers / servers  connected are randomly losing the network access. Everyrhing start to be  slow but most servers and computers don't lose access to the internet.  Browsing a web site will suddenly take ages but... it will work  eventualy.
I already used LAG on other switch without a single issue.. The only uplink I have is to the router and I know that I don't have any issue with network cables....
So  what am I doing wrong ??? I didn't even try to configure the TEAMING on  the servers, just creating LAG on the switch will kill everything Oo.. I'm starting to think that my SG200 is dead out of the box.

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Cisco Wireless :: Dot11Radio0 Interface In Reset / Down Status?

Aug 25, 2011

We have two autonomous access point 1142 series running 12.4(21a)JA1 and randomly the Dot11Radio0 interface goes into reset/down state. At first I thought it was something related to power consumption issue on the switch, but looking at the remaining (w) I have plenty.

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Cisco :: Particular LAP's On WLC 4404 Reset To Admin Status - Disable

Feb 13, 2012

We have around 70 1131's on our 4404 WLC and there are around 5 of them which always seem to reset themselves to Admin Status = Disable.  They are in H-REAP mode as are all the other AP's, but for some reason I have to keep going in and setting the Admin Status of the AP to Enable.  This has been occuring across different firmaware versions since 4, we are currently running 7.

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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 Wireless :: AP 1252 Dot11radio Interface Status Shows Reset

Nov 29, 2012

This is regarding an issue with one of my access point. The access point 1252 is autonomous one running the IOS version C1250 Software (C1250-K9W7-M), Version 12.4(10b)JDA3, RELEASE SOFTWARE (fc1)
The status of the dot11Radio 0 interface is showing as RESET. I have pasted the interface brief details below.
ap03#sh ip int brief


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Belkin Routers :: F7D4302 Flashes Green / Red Then Green And Finally Red

Feb 12, 2013

I can not fix the problem with the router. I power it up, all is GREEN, then it blinks RED, then GREEN, and finally RED. The router is terminally not connected to the Internet. How can I check if the router is BAD. I have done all the troubleshooting, examples:

connected ethernet directly to computer - no problems
attempted to fix problems via belkin software
changed channels on modem
updated firmware
etc, etc

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Cisco Switches :: Replacing Some Netgear Switches With SG200

May 16, 2012

We are replacing some netgear switches with the Cisco SG200.  The situation is relatively straightforward.  We have a series of VLAN's coming in on a trunk from a service provider for our Metro Ethernet locations.  These trunks then get cross-connect to various location for connectivity.  The problem we have is there are two VLAN's that need to go to the same switch which provides access to our public IP block.
I set up the two VLAN's on the SG200 with the trunk port VLAN tagging on the service provider port.  Then I set up a separate port for untagging the traffic with the PVID of the respective VLANS's as follows: [code] The public switch has no VLAN's configured (it is an SG200 too).  If I connect GE2 to the public switch everything works fine.  When I connect GE3 to the public switch, things die.  I thought this might be caused by STP although STP should not be detecting issues like this across separate VLAN's.  Disabled STP, no change.The same configuration with the Netgear worked without an issue.  FYI, the VLAN's cannot be changed...they are defined by the service provider in this particular case.  otherwise we'd just make them the same..

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Cisco Switches :: ASA5505 - Does IOS Like CLI Exist In SG200 Switches

Aug 28, 2011

I need to purchase a few Gigabit PoE switches for a small business and I am thinking that SG200 or SG300 switches are perfect for this purpose.
Layer 3 functionality in SG300 switches is not great - HSRP or any other next-hop redundancy protocol is not supported, dynamic routing protocols are not supported, policy-based routing is not supported, etc. I may get one SG300 switch for inter-VLAN routing so that I do not have to send traffic to a Layer 3 device for this purpose, especially because my Layer 3 device (ASA5505) has only 10/100 Mbps interfaces. All other switches in the network don't have to be Layer 3 switches, and I am thinking of perhaps getting SG200 instead of SG300 swithces. However, because I am a long-time Cisco engineer, and know ins and outs of the IOS CLI, I would much rather administer the switches with CLI rather than GUI. So, do SG200 switches provide CLI (even if it is not officially supported) or is the only Small Business switch platform that supports CLI SG300? I do realize that the OS running on these switches is not IOS, but after having reviewed the CLI manual for SG300, I would say that 90+% of commands are identical to IOS CLI commands.

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Cisco Switches :: SG200 Vlans Across Two Switches

May 22, 2011

I am trying to set up three vlans across two switches. The switches are Cisco SG200 and SG 300 series. There are 20 devices connected to the two switches including a router for Internet. Among these devices are five wireless access points all hardwired to the LAN. If I understand correctly the first thing I have to do is aggregate the two switches. I ran two cat5 cables to ports 1 and 2 of each switch. As I understand it all I need to do is to create SAG with the two ports on each switch. I think I need to use tagging but I don't really understand how to do this. Once I get the trunking set up correctly I want to create one vlan to which all devices will belong for Internet access. The other two would be for data and VoIP. Do I create vlans with the same name on both switches? When I assign the devices (by port) do I need to enable tagging? Which type of port setting should I use? I am assuming that by including the acess points in the vlans will mean that any wireless device connected to them will have acess to the Internet and the devices in the same vlan. 

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Cisco Switches :: Sf300-24p System Light Flashing?

Mar 14, 2013

I changed the setting from static to dynamic and the switch froze up. all lights on the panel flashed, when they stopped the system light on the left side continued to flash. I tryied unplugging unit as well as depressing the reset for longer than 30 seconds. Unit still the same.

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Routers / Switches :: Green Light Blinking Continuously?

Apr 30, 2011

the router is functional, however the green light has never blinked like it is now.

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Cisco Switches :: Is There CLI In SG200 After New Firmware (

Dec 15, 2011

With the new firmware ( released for SG200 switches, is there CLI now?

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Cisco Switches :: Disable STP On SG200?

May 22, 2013

I am trying to connect an SG200 to a customer's existing network. The customer does not want to receive any bpdu frames from the SG200. The customer's port has bpdu guard configured to err-disable their port upon receipt of a bpdu.
How do I completely disable spanning tree on the SG200 so that it does not send any bpdus?

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Cisco Switches :: SG200-50P Log / Ports Up And Down

Feb 19, 2013

My SG20-50P Switch Log appears as follows with Random ports going up and down.  I am trying to find out if this links to another problem I'm having with a Client Server software locking up on the client end.  The hardware, thin clients and desktops, are working and have checked all sleep and power settings.  All items in working order, now I'm wondering about the switch

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Cisco Switches :: Legacy PoE On SG200-08P?

Nov 11, 2011

I saw the announcement stating that "200 and 300 Switches now supports Cisco Pre-standard POE" available here:[URL]However, I cannot find the firmware for the SG200-08P in the download center (latest is this mean this doesn't apply to the SG200-08P?If it doesn't apply, any other switches with 16 or less all gigabit ports which support legacy PoE?

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Cisco Switches :: Sg200-08 No System Led?

Aug 30, 2011

I have a new sg200-08 smart swith. I cant git it to work (No link) on the NIC.
I have tested:
Different cables cat5-6
Different ports 1-8
different computers
When i power on the sitch the only led who lights up is port 1, no system led.

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Cisco Switches :: SG200-50P - Devices Not Get POE

Jun 23, 2011

I just purchased a SG200-50P switch to replace a WS-CE500-24LC, that had a limited amount (4) of PoE ports.  I was running Cisco 7940 IP Phone, Cisco AP1231 and AP1100 series access points via PoE off of this switch.
When I attempt to plug in these device types into the SG200-50P they do not power up.  What is going on?  Why do these devices (7940 IP Phone, 7960 IP Phone, AP1100 series access point, AP1231 series access point) not get PoE from the SG200-50P switch?

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Cisco Switches :: SG200 - SSL Import

Feb 16, 2013

I have an SG200 switch and am trying to import a certificate signed by my own CA.  I generate the CSR and sign it using Java's key tool with my own root cert.  When I attempt to import the resulting cert, the switch blanks out the certificate text box and deletes all of my d name data (CN, etc) from the switch.  What am I missing?

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