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 Switches :: SG200 - Random Network Dropout

Jul 21, 2011

I have SG200 50/50 Port Switch and the devices that connect into it are servers and workstations
 
Few days and until we experience network dropouts and when take a look at the switch log it gives me this?
 
  2147483423   2011-Jul-22 16:34:53 Informational   %LINK-I-Up:  gi3, aggregated (1)       
    2147483424   2011-Jul-22 16:34:53 Warning   %STP-W-PORTSTATUS: gi3: STP status Forwarding, aggregated (1)       
    2147483425   2011-Jul-22 16:34:50 Warning   %LINK-W-Down:  gi3, aggregated (1)       
    2147483426   2011-Jul-22 16:34:37 Informational   %LINK-I-Up:  gi3       
    2147483427   2011-Jul-22 16:34:37 Warning   %STP-W-PORTSTATUS: gi3: STP status Forwarding       
    2147483428   2011-Jul-22 16:34:27 Warning   %LINK-W-Down:  gi3       
 
Device connected to gi3 is a Web Server
 
This is also happening on more ports ie 20-printer, 13-Cisco Wireless Access Point, 24 File Server etc., which I don't know what is going on. With my research, it said something about spanning protocol. Is this possible to disabled?
 
The other cisco switch where desktop are also connected doesn't have this error.
 
My firmware is 1.1.0.73
Boot Version 1.0.0.1

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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
 
Code...

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Cisco Switches :: To Disable PoE Ports On SG200 26P

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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Cisco Switches :: SG200 - LACP On LAG / Ports Not Active

Jan 8, 2012

I am trying to setup up a LAG with LACP between the switch and a Sinology DS1511+. Every time I enable LACP on the LAG I cannot get the ports to become Active Members.

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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 (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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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: 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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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 :: No Access After Reset SG200?

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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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: 1.0.1.0

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Cisco Switching/Routing :: SG200 / 3550 - Creating VLAN And Isolating PC On Network

Feb 12, 2013

I was given a task of creating a vlan and isolating one pc to access an internal website (192.168.90.15) on a specific port (port 8080)The pc is connected in the following manner:

PC--> HP Switch --> Cisco Small Business SG200 switch --> 3550 Catalyst 1, 3550 Catalyst 2 and 3550 Catalyst 3.

I have created a vlan 110 on the Main 3550 Catalyst switch and successfully added the pc to that vlan.However, that PC must be able to access the internet and an internal website on port 8080.I have placed an access-list on the main 3550 catalyst switch which is connected to our router as below:

Client ip address: 192.168.100.2
VLAN 110: 192.168.100.3
 
access-list 110 permit tcp host 192.168.100.2 host 192.168.90.15 eq 8080access-list 110 permit icmp host 192.168.100.2 anyaccess-list 110 deny ip 192.168.100.0 0.0.0.255 ? I was unable to access the webserver even after many attempts.

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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 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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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 :: 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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SMCD3GN - New NIC Losing Internet At Random Times?

Jan 29, 2013

I've been having some problems with my new custom built computer connected wirelessly to my Router. My router is an SMCD3GN. So it is a Router/Modem in one. I am currently using the Linksys AE3000 Wireless-N USB Adapter. I have had a past Wireless USB Adapter, & an internal Wireless network card. The USB quit working & in order for me to get it to work is I have to reinstall the drivers everytime I turn my computer back on. The internal wireless network card would randomly lose internet every 30mins - an hour. Being a gamer, this is very frustrating. So, right now I am using the Linksys USB, and I was just playing a game & talking to some friends on skype & I would lose internet for 2 seconds then it would automatically reconnect. So I am beginning to think that it might be my Router but I tried my USB on my laptop for like 10 mins (I disabled the internal wireless network adapter) & I went into cmd.exe and pinged google for about 10 mins, & it said "Request Timed Out." several times.

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Cisco Switching/Routing :: Switch Ports Up And Down SG200-50P?

Feb 19, 2013

My SG200-50P 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
 
2147483369 2013-Feb-20 15:12:07 Warning %STP-W-PORTSTATUS: gi19: STP status Forwarding
2147483370 2013-Feb-20 15:12:02 Informational %LINK-I-Up: gi19
2147483371 2013-Feb-20 15:12:00 Warning %LINK-W-Down: gi19
2147483377 2013-Feb-20 14:51:31 Informational %LINK-I-Up: gi45
2147483378 2013-Feb-20 14:51:28 Warning %LINK-W-Down: gi45

[code]....

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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 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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PC Sending Packets To Random IP's From A Range Of Ports?

Aug 27, 2012

So this is somewhat of a strange issue. I have a program called PeerGuardian 2 and it allows me to simplistically see the packets being sent to and from devices on my home network. It's showing that my computer is sending packets to random IP addresses, some of them reoccur, on a massive range of ports all going in order.

(example)
From 192.168.1.253:6812 - To 74.120.148.2:80
From 192.168.1.253:6813 - To 74.120.148.2:80
From 192.168.1.253:6814 - To 74.120.148.2:80
From 192.168.1.253:6815 - To 74.120.148.2:80
From 192.168.1.253:6816 - To 74.120.148.2:80
From 192.168.1.253:6817 - To 74.120.148.2:80

This happens in spurts and it usually sends 20-40 to varying IP addresses in a matter of a few seconds. I asked my ISP if they understood what this was and it stumped the technician I spoke with. I also have run multiple virus/malware scans and everything comes up clean.

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Cisco Switches :: SF-300 Deny Access To From One Port To Other 4 Ports

Jul 20, 2011

I have 5 VLANs, I assign VLANs to its ports and make them all Untagged.I created ACLs and a ACE rules for each ACL, and then assigned to the ports.So what i am trying to do is to deny access to from one port to other 4 ports and granted access to any other ports. But it is not working, without last rule "allow any any" it has no access to any ports, with the last rule it grants access to every port even to those I denied.Router in Layer 3 mode, all VLANs have their IP's.
 
At some moment I was able to work it properly but without using any rules, I just tagged my untagged VLANs to those ports which I wanna get access to. As you can see I want allow ports GE1 - GE4 communicate with 1 to 24 ports but not to each other.

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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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Home Network :: How To Get More Ethernet Ports Available To Use / Without Losing Sky Router

Oct 27, 2012

I have Sky Fibre Optic Broadband, with a router supplied by Sky, (You can't use any other router, as username/password for internet is already put into router & they will not give you details when you phone them). The router they supply has only four Ethernet ports on. One is used by Sky to give you Fibre Broadband, thus leaving you with three.I have five devices that must use Ethernet, as they do not have wireless.How do I get more Ethernet ports available to use, without losing the Sky router, as Sky will NOT let you use any other router.

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Cisco Switches :: ESW 520 - Creating A VLAN

Dec 8, 2010

we have two Catalyst Express 500 switches and a ESW 520 just purchased. the VLAN on the other two is 2. how do I change the Default to be 2 instead of 100 in the ESW Switch.

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Cisco Switches :: Is There CLI In SG200 After New Firmware (1.1.2.0)

Dec 15, 2011

With the new firmware (1.1.2.0) 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 :: 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 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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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
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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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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