Cisco Switches :: Cable Disconnected With Macintosh And SG200 26 Router?
Jan 14, 2013
I owe a SG200 26 port switch and it works fine so far.Amacintosh computer (mountain lion) has been added to the wired net. Everything works fine t first, but there's a sudden disconnection issue.It seems that the macintosh computer is not able to communicate to the switch, and the macintosh prompts a lack of cable connection. None of the lights on the switch are on.If I plug the macintosh cable directly to a router ethernet port, it works properly.
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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 24, 2013
We have two Comcast 100MB routers. Can I plug these both into the SG200-50? How do I configure the ports?
I have an Apple Extreme Wireless Router that 30 Laptops use. I also have 25 VOIP phones and 10 Desktops that are on an unmanaged switch which I want to convert to the new SG200-50.
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Apr 15, 2013
I am new to VLANs although I generally understand the concept. I have a small office with 25 desktop/laptops and 15 VoIP phones connected with a SG200-50 switch and on Port 1 I have the Cisco SRP541W router for DHCP and Internet access. My goal is simple: 1) Segregate the VoIP phones (voice) from the computers (data) and 2) Prioritize the VoIP phones traffic.
I believe this can be accomplished by setting up a second VLAN and maybe a third (if the default should not be used) and then identifying those ports as Voice VLAN ports. I guess I just need to know how to flag each interface and each port so that they all can talk to the router on Port 1 yet the voice and data will be in different broadcast domains. Also, do I need a management VLAN??
Is this setup correct? VLAN 1 - default (data) Port 1 (Trunk) (Tagged)Port 2 - 30 (Access) (Untagged)VLAN 2 - voice Port 1 (Trunk) (Tagged)Port 31 - 48 (Access) (Untagged) What should the interface settings be on each port (General, Access or Trunk)? What should the port VLAN membership be on each port (Tagged or Untagged)??
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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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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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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 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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Apr 23, 2012
I am on a LAN that works just fine.I recently got something called a TMobile Rocket.It is a USB wireless broadband adapter that people most commonly use with laptops at remote locations to access the internet.
There are settings in the TMobile connection manager that are supposed to "allow simultaneous connections", which are set correctly.That is what is not working correctly. If I connect my cable to my LAN, the TMobile connection manager says it is still connected; but, it will not allow any throughput.Throughput is immediately restored as soon as the LAN cable is disconnected.
TMobile says this problem is due to a setting in my computer that is overriding the TMobile connection.
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Jan 8, 2009
The setup:
Time Warner Cable Internet Dynamic IP
DIR-655 A3 Firmware 1.21
3 hard wired, fully updated, virus free, windows xp pro machines
The Issue:When only one PC is running or actively being used there is no issue. However, when there is moderate internet usage on a second pc the internet connection will drop (the WAN light on the router stays on as does the ethernet light on the modem) and give this pair of log entries.
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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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Jan 10, 2011
ATTACHED: My current running config with sensitive info taken out.
I have a Cisco 881 Router connected to cable modem. The router is running IOS 15.1.
I have it configured exactly the same way as an 877 router running IOS 12.1 which does not exhibit the problem. Just a standard LAN/WAN config with basic routing/firewall.
When the internet connection is lost for any reason and then re-established the router will no longer pass internet traffic unless I reboot the router.
I used Cisco Configuration Professional to configure the router. The key setting seems to be the Router Static Route. We have a static IP and I set static route with the "make this the default route" checked. Then I set forward (next hop) to the IP my ISP gave me as their gateway.
This is exactly the same way I set the 877 router using the same ISP but in a different office.
Every so often the internet is lost due to power outage or the ISP doing something on their end and every time that happens we have to reboot the router which is quite annoying.
I did not have the "permanent route" check mark checked but I do not have it checked on the router that does not have the problem either so I don't think that's it.
When I set the static route to "interface" then added the static IP of the next hop it will continue to work for incoming connections but not outgoing.
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Apr 18, 2010
I am using WAG120N, and it keeps disconnected from internet randomly, normally between 5-10 minutes. The thing is, when it is disconnected, the adsl lamp is still on, so I think that it is not the network problem. When internet lamp turns off , I try to turn off the device (or unplug the phone cable), then turn it on again (or re-plug the cable), and it will work for certain minutes, then gets disconnected again. I already upgraded the firmware to v 1.00.12.
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Aug 8, 2011
I have LinkSys WAG160N V2 with the last firmware 2.00.20 I have very annoying issue, the Gateway always disconnected from time to time .. Some days it work so fine and some days it disconnect 20 times per day and I have every time to go Status >> Gateway and press connect , another weird thing is that sometimes it gaves me speed 3784 Kbps and sometimes 3500 Kbps , sometimes it gaves me the right speed 4700 Kbps i did think maybe it's my ISP problem , but after the upgrade the problem gone for 3 weeks then it back again, and when it back I did make factory reset and reconfigure it again regarding my ISP settings and it did work fine with 3784 Kbps speed and it should be 4700 Kbps.
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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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Apr 24, 2013
what the intention behind adding SSH to the SG200 series switches was. Is it to allow SCP copies to and from the switch for configuration and firmware updates OR is it to allow CLI access to the switches.
I have tried to SSH to the switch using PuTTY from Windows and native SSH from Linux/Unix clients, but nothing happens.
Is there some other area of configuration to enable communcation via SSH?
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Jan 23, 2012
I used LACP on port 49 and 50.After upgrade firmware from 1.0.0.19 to 1.1.2.0 my LAG1 stay down...all port member stay down, port link is up but LAG stay down...I testtu delete and reconfigure LAG1 but nothing work...
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Feb 12, 2012
I am having issues getting clients to DHCP off of a teamed adapter through the Cisco Switch. If I run a one to one cable from the server to the switch it works fine, but when I switch over to the Intel QuadNic in Team Mode then the PXE clients do not get a DHCP address from that server anymore.
I have configured the Team mode on the Windows Server 2008 R2 and given the and configured the LAG with the 4 plugs on the Cisco SG200-26 switch in the LAG Management. It says the link is up and if I give the client a static IP I can ping the server and the server can ping the switch.
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Apr 22, 2013
My second problem with sg200-08 (firmware: SG200-08x_FW_1.0.6.2.stk) is when I try to add specific MAC address as secure:MAC Address Tables - Static Addresses - Add; insert vlan id, port, mac address and select "Secure":I get error message: "Error: Failed to Add 'Static Address' entry.
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Jul 14, 2011
We have two Web Servers and configured as Network Load Balancing in a cluster for failover.
WEB1 IP: 192.168.1.50
WEB2 IP: 192.168.1.51
Both configured with Cluster IP: 192.168.1.100 on Multicast mode.
TEST ON LAB USING ORDINARY 10/100 UNMANAGED SWITCH I can ping all the IP addresses on the LAN and when I http://192.168.1.110 on any PC on the LAN works no problem.
TEST ON PRODUCTION USING CISCO SG200 50/50 PORT SWITCH I can ping all the IP addresse on the LAN and when I http://192.168.1.110 on a different machine i did not work, but on the server itself will work as expected.
NOTE: Both tests are on LAN only.
I wonder if this is something to do with the switch because of Cluster IP MAC address. Do I need to configure something on the switch?
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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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