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: 1.0.1.0
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Dec 6, 2011
I am unable to successfully authenticate my SG200 to either a Cisco ACS or Windows2008 RADUIS server. (C3750x on the same network authenticates fine).
Q1. Is this feature (management login authentication to a RADIUS server) supported on the SG200?
Q2. Is so is there any configuration guidance available for both the SG200 and CSACS / WindowsServer2008 NPS?
I hav not got as far as 802.1x uthentication yet, but config example of this would laso be useful.
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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 (1.2.7.76) 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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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: 0.0.0.0" 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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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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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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Apr 27, 2013
I have a problem with my SG200, maybe more than one.
I tried to update to 1.3.0.59 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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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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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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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 192.168.1.1) with dhcp active and ip pool address released from 192.168.1.100 to 200.
the SG200-26 have static ip 192.168.1.254 and 192.168.1.253
MY NEEDS:
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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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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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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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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Jul 18, 2011
i have distributed my internet through lan by router .but i think that, that user whom i have gave my net is forwarding to other users too through hub.
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Jul 1, 2011
some people are accessing my computer from another place how can i give protection to my computer?
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Aug 3, 2011
I am using wire less internet in a public space with my personnel lap top, my question is how to stop unauthorized access to my lap top desk top, drives and other files.
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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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Feb 15, 2012
How do I change my password to prevent unauthorized access by other people?
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Feb 12, 2012
We have blocked some sites in router which our user cannot access and it gets them default browser message "pages cannot be displayed". But I want to display pages like "You are trying to access unauthorized website" or something like that when they try to open such websites.
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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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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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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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Dec 15, 2011
With the new firmware (1.1.2.0) released for SG200 switches, is there CLI now?
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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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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
Code...
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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 1.1.1.8 firmware for the SG200-08P in the download center (latest is 1.0.1.0).Does 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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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
4
different computers
When i power on the sitch the only led who lights up is port 1, no system led.
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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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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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Feb 9, 2012
When I came back home today I saw that my SG200-08 switch did not look fine.Basically, the system LED of the switch keeps blinking and end devices connected just don't have any network.I tried to reset the switch with the "reset" button (with a paper clip) the system LED was orange during just a second and then continue to blink.What is wrong with the switch?Is there a way to flash a new firmware and/or to delete the configuration file?
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Jan 12, 2013
I am thinking of buying a SG200-26P switch and have a few questions:Is it possible to disable the PoE function on the 12 PoE ports?I need al the ports but only 6 with PoE.What happens when you connect a non PoE device to a PoE port?
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Aug 24, 2011
I got a new switch and am trying to connect a UCS server to it. I can ping the switch just fine but when I try to use IE8 or firefox, I can't get to the web interface to configure it.
Here's my setup:
Cisco UCS C210 M2
IP = 192.168.1.100
Subnet = 255.555.255.0
[Code].....
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Apr 17, 2013
I have an SG300-10 and an SG200-26. I also have an OpenWRT flashed router that can tag VLANs.My problem right now is that my default VLAN is 1, my router is doing DHCP in VLAN 1, and I want all my network equipment to be on VLAN 1, but my SG200, when LAGed to the SG300, will not get an IP.My SG300 is pulling an IP just fine from my router DHCP pool. When I connect the SG200 directly using either 1UP port settings or 1TP port settings, I get an IP just fine. When I LAG my connection (ports 1-3 on both) I get no DHCP information sent through the LAG to either the SG200, nor to any client devices that are set for DHCP.
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