Cisco Switches :: VLAN Management Via SNMP On SG300-10 Switches
Aug 7, 2011
Any snmpset commands to add, modify and delete vlan table entries on SG300-10 switches? I checked url... however this information is apparently only valid for catalysts. The latest firmware is installed and the provided MIB files are used.
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Sep 4, 2011
Any snmpset commands to modify port vlan membership on SG300-28 switches? I checked [URL] however this information is apparently only valid for catalysts.
The latest firmware is installed and the provided MIB files are used.
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Feb 3, 2013
how to configure SNMP on the Cisco SG300 switches? I have the SG300-10P. I am not fully familiar with the new command line interface on this device, it was easy on the IOS but finding it a nightmare on this one.
I put the following command in but it didnt work.
snmp-server view Interfaces interfaces included
snmp-server community ACB123 ro 10.x.x.x view default
I tried to follow the guidelines on the cisco website but thats all Web interface based, i can only access the switch remotely via CLI.
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Apr 10, 2012
I was positively surprised to find the optical transmit/receive values using the show fiber-ports optical-transceiver detailed command on a SG300-10.
Now I'm wondering if there is also a SNMP-MIB to query these values? I've already tried the CISCO-ENTITY-SENSOR-MIB used by the larger devices running Cisco IOS, but this didn't work.
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May 24, 2013
I've got an SG300-10 connected back to back (trunked) with a Cisco 3560X switch, across a fibre link and am seeing some big inconsistencies in terms of unicast data transferred across the ports between them.
During a night time window of 4am - 6am I run backups which involves a large copy of files, that almost saturates a GigE link - we can see from the 3560X end that the link is running at a bit over 800MBit/sec of throughput, sustained. The duration of this transfer is consistent with the size of the files being transferred (ie just over an hour, and is what I'd expect for a data transfer of about that amount). Back-of-the-envelope calculations indicate that the 3560X is measuring this data throughput correctly.
However on the SG300 end of the link, which is also being polled by the same application (Cacti), I'm observing spikey counts of only around 20MBit/sec during that window. These counters are very obviously incorrect - there's a huge amount more data moving across the port than that. The incorrect calculations are showing on both the trunk port out of the SG300 (uplink) as well as the interface where the NAS is connected in (which is an access port).
Cacti is polling the OID: .1.3.6.1.2.1.2.2.1.16.57 which translates to IF-MIB::ifOutOctets.57 = Counter32.I'm running version 1.3.0.62 but this problem is not new to this release - previous releases and 1.2 based releases also had this problem.
It looks like multicast traffic may be being counted correctly (that's only a suspicion though), however what I am certain of is that there is a very large discrepancy with the unicast traffic counts.Is this OID the correct one to be using for this switch?
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Mar 25, 2012
I have a SG300 switch working in layer 3 mode. I created 3 VLANS and the intervlan communication is working fine. I want to know how to block acces to switch managment from the Vlans. One of the vlan is allowed to access the switch but not the others vlans. What is the best way to implement this? with ACL or with Managment Access Method, creating an access profile?
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Dec 21, 2012
I have a new SG300-28P, and have had occasional issues with being unable to connect to it via anything other than the serial port. I have connectivity between my machine and the switch (tested with ping each way), and in fact, have the same problem if I take a laptop to the switch and connect them directly.What happens is that though the switch is operating normally, http, https, ssh and telnet attempts to access all fail in one way or another. Ssh and telnet either yields no response or a refused connection (even though those services are enabled). For http and https, I'll occasionally get enough of the web page to be able to tell what it is ... but attempts to log in just don't work.While this is happening, the CPU and packet load on the switch is very, very low.Rebooting didn't work entirely, though it may have made it better. Resetting to factory defaults and then reconfiguring makes it work.This is using the latest firmware: 1.2.7.76.
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Jun 2, 2013
What tools are you using to manage multiple SG300 in a single network ? I can't find any good solutions on the cisco website.
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Jun 13, 2012
How to set the management interface on a SG300 Switch in Layer 3 mode? I've some vlans configured on the switch with interfaces in each of them:
Vlan 100 (10.0.1.254 /24)
Vlan 200 (10.0.2.254 /24)
Vlan 300 (10.0.3.254 /24)
...
Vlan 900 (10.0.9.254 /24)
Now, the management interface is listening on all interfaces (IPs). But I would like to configure the switch to only listen on 10.0.9.254. What I need to configure or whether it is possible?
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Jan 20, 2011
I have a Netgear GSM7248R switch with 5 different Vlans including th management Vlan. Each of the vlans are connected to my layer 3 switch for routing. I want to access the management vlan form any of my Vlans so my layer two switch can be detected by my snmp manager.
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Mar 25, 2012
I want to set up a vlan only for the wifi APs and wifi clients on my network. They can't access to any server, only internet acces. I already implement this configuration and its working, but now I want to allowed a couple of laptops to connect to servers in other vlan. what should I do? Should I do it using Mac address of laptops or IP?
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Jan 26, 2012
I am using a couple cisco sg300 28P switches along with a sonciwall firewall/router. The sonicwall was already in place and working so they didnt want to replace it. I understand how to configure the vlan on the sonicwall, but could use some info on the cisco. I would basically like to create 3 vlans, 1 default for management, 2 for pc's on lan, and 3 for the cisco spa504g phones/'voip. Would i just go into the vlan managment, configure the 2 new vlans and give them two id's? These offices have one network drop, so the phones and pc's will be sharing the switch ports, however the phones have a setting to configure the vlan id so they know which one theyre on. Is there anything i need to do after that? I want to make sure that vlan 3 has the highest priority becuase its voice, is there some qos configurations i need to make on that switch as well? Also, the port that links the two cisco swtiches together, does that need to be set as "trunk" port? I understand what vlans are, but its just the first time ive run into these cisco models. .
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Apr 22, 2012
Before I launch into this can I say that I am very much a novice with regards to Managed Switches and their configuration. I have the following equipment which I have connected to the switch: [code] All of the above are on subnet 255.255.255.0.All of the above communicate with each other during normal operation.Our client is connecting to the switch but his requirement is for his system to "see" the PLC Comms Card as follows:IP: 10.0.3.61 on Subnet 255.255.252.0 .
Using the Internet Explorer interface connection I have created an additional VLAN (ID 2) on Port 10 with the intention of using this as the connection to the client ( I assume there will be further settings required to route the PLC connection to this port) but every time I try to assign the IP and Subnet values and click "APPLY" the changes are not made and the connection appears to hang leading me to reboot the switch.I have connected to the switch via console and changed the mode to Layer 3. I also assume that it is OK for the three pieces of equipment to remain on the default VLAN. How I should setup this VLAN and ultimately achieve my goal.
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Mar 28, 2013
I am facing an issue to setup what I initially called simple network but still unable to put it together.On SG300-20 I want to setup 4.3 of the vlan are to separate users in to different groups and to secure data confidentiality.1 is for the NAS. All users on the 3 vlans must access the NAS vlan.All user should have access to internet via SG300 through the ISP provided router. How to configure this, I have every little knowledge of switching and routing? And the routing seems to be the issue I am encountering because I am able to create the VLANs and assign static IP address to them but not able to get them talk to each other. I use each vlan ip as gateway on each port assigned. [code]
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May 10, 2013
I want to use Multicast TV VLAN with my SG300-10 to join Multicast Groups in different Data VLAN's. It's working fine, but the problem is that it isn't possible to add all the Multicast Groups to the Multicast VLAN because each TV channel use other groups. For me it's only to handle if I can use wildcards to add a specific range of multicast traffic to the Multicast TV VLAN. Is that possible with that Switch?
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Feb 19, 2013
i purchased 300-28 how it config for stp and trunk
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Mar 31, 2012
We have recently purchased a SG300 to break up our network which most consists of virtual machines via Bridged networking on network machines. I have created successfully Vlans and the physical machines are capable of communicating across the different subnets that I have created via the SG300 however the Virtual machines can no longer be reached.
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Jun 6, 2012
I have a connection on IP 192.168.1.21, Subnet 255.255.255.0 - this is on the default VLAN1 on the switch. I need to route this to IP 10.0.3.101, Subnet 255.255.252.0 - which is set up on VLAN2 on the switch. I have set the switch to Layer 3 via console.
how I setup this route? I am use the Browser based interface.
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Sep 11, 2012
I am wondering what the best way to separate a network, both data, on a cisco SG300. I do not want network 1 to able to communicate with network 2 or vice versa. I have one server for DHCP for network 1, 192.168.1.X. I would like network 2 to have ip of 10.0.0.X, can the cisco SG300 do dhcp for this vlan?
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Jul 13, 2011
Using a sg300-52 switch I created two VLANs that share a port for access to the internet. All original devices added to the VLANs are functioning correctly so I have to beleive the VLANs are set up correctly. I added a new desktop and an old laptop to the VLAN and neither worked. I was able to get the desktop to work by enabling VLAN tagging in the network adapter. The laptop is 5 years old and it does not have any such setting in network adapter. There are 2 other devices that share the same port with the laptop and they both function properly. My conclusion is that the laptop does not support VLAN tagging. Is there someway to configure the switch to account for this?
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Feb 3, 2013
i have a SG300-52 Switch, route mode is enabled, and it is using the latest IOS.I have created 4 Vlans in this switch, till this point its OK, but once i try to give ip addres to the created Vlan either from the GUI or CLI the switch is not responding. i have to go and manually reset the switch using a pin.
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Mar 4, 2012
i was trying to set up a new SG300-52 L3 switch for switching and Vlan. The problem is that the vlans on this switch cannot get their DNS resolved. Probably a stupid thing i can't get to see, but i think it is a simple solution given switchin is not my expertise.So my setup:
- ISP Wan router: LAN ip 10.0.0.1, DMZ: 10.0.0.2 -> i have to use this router for ISP support. But it suckes, that's why we use own router for firewall, port forwarding etc.
- Nice Router: WAN: 10.0.0.2, LAN: 192.168.1.1
- SG300 L3 switch
This works. I can ping switch, nice router, ISP router and google's ip from VLAN 5.But i cannot ping google using host name. From within SG300 i can. So it has something to do with SG300 not doing DNS right.My Client on VLAN 5 has ip 10.1.1.5 / 24, default gateway and dns pointing to switch: 10.1.1.1.I have put an entry in DNS servers in SG300: 192.168.1.1 active (pointing to Nice router). On client leave default gateway pointing to switch. But put DNS server : 192.168.1.1
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Mar 25, 2012
I set an SG300 switche in layer 3 mode with 3 vlans.I need to give IPs to a whole vlan machines. Do the switch have a DHCP server per vlan? How to configure this?
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Mar 17, 2012
configure my new SG300-28P. When I have started the switch, I have specified a new password and enabled telnet in order to setup the switch in Layer 3 mode.
After a restart, the switch took its IP address from a DHCP server. When I try to set a static IP address (192.168.2.1), I receive the following error message: Duplicated IP interface on the same subnet.
The IP address 192.168.2.1 is not used by any device within the network. For information, the message doesn't appear when the switch is in Layer 2 mode.
why I can't change the IP address of default vlan in Layer 3 mode ? All I can do is set the IP address to static or dynamic.
For test purpose, I have added 2 vlans. But I wasn't able to route traffic between vlan. how to configure the switch to route traffic between vlan?
find below details informations about my VLANs.
- Default (VLAN ID 1)
IP Address : 192.168.2.1
Subnet : 255.255.255.0
[Code].....
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May 30, 2011
I have Linksys SPS224Trying to create VLAN through SNMP. Issueing the string to create VLAN ID=100 with name "VLAN100"
snmpset -c private -v2c 10.254.2.144 .1.3.6.1.2.1.17.7.1.4.3.1.1.100 s VLAN100 .1.3.6.1.2.1.17.7.1.4.3.1.5.100 i 4
It reports
Error in packet.
Reason: (genError) A general failure occured
Failed object: iso.3.6.1.2.1.17.7.1.4.3.1.1.100
In same time changing the name of existing vlan snmpset -c private -v2c 10.254.2.144 .1.3.6.1.2.1.17.7.1.4.3.1.1.23 s VLAN23 and even deleting the existing vlan snmpset -c private -v2c 10.254.2.144 .1.3.6.1.2.1.17.7.1.4.3.1.1.510 i 6 are successful.
How can I create new vlan through SNMP?
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Mar 12, 2013
In one of my client location I have deployed one Cisco 3560X (core switch) and one SG-200-18 (access switch). I’ve configured three vlans (vlan 2, vlan 3 and management vlan 1), relevant trunking and I’ve connected two pc to the access switch to vlan 2 and 3 respectively. So far everything (including inter-vlan communication) works fine, except that I couldn’t reach the vlan 1 (management vlan) devices (access switch and core switch) from any pc which is connected to either vlan 2 or 3.
I’ve configured the “port VLAN membership” settings in SG-300 as follows,
Interface mode Administrative vlans Operational vlans
GE 2 Access 2UP
[Code].....
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May 15, 2013
we have an SG300 latest 1.3 firmware, we have it acting as our DHCP server, we have a 10.10.1.x range, 10.10.3.x range, and 192.168.24.x range, they are all on seperate VLANs and all can talk to each other which is what we want. However we have someone who wants to use the 192.168.1.x range to add IP cameras to our network using there own switch. I figured I'd just setup our server to do DHCP etc and it would communicate with the 10.10.1.x range of IP addresses no problem. It turns out the SG300s can't do DHCP for that range, so if he has all static address on the 192.168.1.x range how can i setup inter VLAN communication so we can talk to that range?
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Jul 25, 2012
I am having a problem with 6941 phones on a SG300.When connected Smartport assignes the native and tagged voice vlan correctly, however the phone connects to the native vlan. After running a few tests I have found it only happens when the voice vlan is also the default vlan, though this has only been tested with the default left as VL1.I can get to the phone on the native vlan, it picks up an address via dhcp, and the Operational VLAN ID is shown as 4095.Manually configuring the port as a trunk with the native and tagged voice vlans gives the same result.CDP properties for the ports show the voice vlan as correctly advertised.This happens on multiple phones/ports.The 7962 phones on the same switch work as expected.If I set the voice vlan to be something other than the default vlan 1, a vlan with dhcp available, the phone uses the configured, tagged vlan as expected and the Operational vlan shown on the phone is correct.The switch is running 1.2.7.76 I have a test setup with a number of 7900 and 6900 series phones running on a SF300 and have tested all phones as working if the voice vlan is not on the default. I intend to test with the voice vlan as the default shortly to confirm it is not an issue with the specific switch and discover if it occurs on more than just the 6941.
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Apr 14, 2013
I have a Cisco SG300 small business switch and 541 APs. There are 2 VLANs in our network. One must be limited by bandwidth. How to configure vlan rate-limiting on SG300? And describe CIR & CBS.
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Mar 22, 2012
why i can not found ip router setting by main menu? the sg300-28 can not support ip router command?mor informations,see my img. If sg300-28 can not support ip router command,what i can do it that communicate by multi-Vlan ?
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Dec 10, 2012
I am having a problem with 6941 phones on a SG300.
When connected Smartport assignes the native and tagged voice vlan correctly, however the phone connects to the native vlan. After running a few tests I have found it only happens when the voice vlan is also the default vlan, though this has only been tested with the default left as VL1.
I can get to the phone on the native vlan, it picks up an address via dhcp, and the Operational VLAN ID is shown as 4095.Manually configuring the port as a trunk with the native and tagged voice vlans gives the same result.
CDP properties for the ports show the voice vlan as correctly advertised.This happens on multiple phones/ports.The 7962 phones on the same switch work as expected.
If I set the voice vlan to be something other than the default vlan 1, a vlan with dhcp available, the phone uses the configured, tagged vlan as expected and the Operational vlan shown on the phone is correct.
The switch is running 1.2.7.76 I have a test setup with a number of 7900 and 6900 series phones running on a SF300 and have tested all phones as working if the voice vlan is not on the default. I intend to test with the voice vlan as the default shortly to confirm it is not an issue with the specific switch and discover if it occurs on more than just the 6941.
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Aug 31, 2012
I have two Cisco SG300-20 switches. Both of them are configured in L3 mode. They have several VLAN's configured.
When I reboot my switches some VLAN membership settings are lost! I have already saved the settings over and over before rebooting, and even tried to save it to the backup memory and so on. Say for example I have changed port 9 to 14 from VLAN 101 to VLAN 105. I save the configuration, reboot the switch. And then the changes are lost. This is a big problem, because servers and my iSCSI network loose connectivity. They already have the latest firmware. This issue was there three firmwares before.
This issue pop-ups when I have a power loss, or I need to reboot/shutdown them manually. It may be off-topic but I also have the feeling that the performance of the switches goes down during uptime. A reboot solves the performance issue. I don't have a performance benchmark, but I can notice it on the performance transfer rate between clients and servers.
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Aug 21, 2012
I am using several SG300-28 Switches with firmware version 1.1.2.0.I have dynamic VLAN enabled. As RADIUS server I am using free radius 2.1.12.Authentication is only based on the MAC address. (I configured that on the switches)On the switches I created three VLANs. VLAN100 for the authenticated clients, VLAN200 for Management interface and VLAN300 as Guest VLAN. After a wrong authentication the clients should be put into this Guest VLAN immediately (I configured this on the switches). I am using Windows XP and Windows 7 clients in my network. I did not configure any EAP settings because I just wnat to use the MAC address.
In most cases the dynamic VLAN assignment and authentication is working fine. The switch log says that the client is authenticated and the same I can see on free radius log. But in some (rare) cases the client is rejected. The CISCO log says "MAC aa:bb:cc:dd:ee:ff was rejected on port ge17" but when I look at the free radius log then this MAC address was successfully authorized.
The problem is that the client gets an IP address based on the Guest VLAN300 but after that the switch seems to "switch" the VLAN on the port and then the client is authenticated correctly on the right VLAN but the client does not request a new IP on the new VLAN. If I unplug and re-plug the LAN cable in most cases the client get the correct VLAN and the correct IP. This is happening randomly on nearly all my PCs.
Do I have to set some timers higher ? I don't think it is a problem between switch and RADIUS but a problem between communication of the host and the switch.
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