Cisco Switches :: Get SG300 To Work As Router Between VLANs
Jul 10, 2012
i am trying to get a SG300 work as a router between VLAN's?So fare without any lock?Test setup one SG300 switch and 2 PC's ?Ping works from host to VLAN IP's, but not from host A to host B
Here is the host configuration
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[code]...
Here is the switch configuration
SG300 with FW 1.1.2.0 configuration i L3 mode
set system mode router
confip routing (needed on SG300??? - ti is on a 3560 i PacketTracer)
vlan databasevlan 5vlan 6vlan 7
[code]...
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Aug 13, 2011
I just received a new Cisco SG300-10 and am configuring it in Layer 3 mode. I am trying to setup multiple routed VLANs going back to a FiOS Actiontec router. My configuration is as follows.
Fios Router: 192.168.1.1
Assigning DHCP 192.168.1.2 through 100.
SG300-10 has VLan 1 ip 192.168.1.5 used for Mgmt.
VLAN2 is 10.0.2.1
VLAN3 is 10.0.3.1.
I have a static route set on the fios router for both subnets setup as follows.
Destination 10.0.3.0 Gateway 192.168.1.5 Netmask 255.255.255.0 Metric 1
Destination 10.0.2.0 Gateway 192.168.1.5 Netmask 255.255.255.0 Metric 1
I have a laptop connected to Gi8 on the Cisco (Vlan 3) and statically assigned 10.0.3.3, with a gateway of 10.0.3.1. DNS set to the fios router (192.168.1.1).
Everything pretty much works EXCEPT, I cannot get out to the internet from either vlan. Traffic routes between vlans/and the default subnet on the fios without issue.
When I ping out, DNS resolves, but will not go past the fios router. Am I missing a setting somewhere?
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Aug 20, 2012
I'm going to have several SG300-28P switches to setup. I'll need to create multiple vlans for data, voice, and wireless traffic. I have the following questions in setting up this configuration:
VLAN 1 Management
VLAN 100 Data
VLAN 200 Wireless
VLAN 300 Voice
1) For managing the switches via IP, will LAN1 be the default management network? Should I create a seperate VLAN for managing the switches?
2) For uplinking the switches together, I plan to trunk a port to connect the switches together. What's the configuration on the trunk port to forward all vlans from one switch to another?
3) On some ports, I want to configure a trunk for two vlans (Data and Voice) where the phone has a pass through for PC. The phone supports tagging for the PC and the VoIP traffic. For example on port 10, would VLAN 100 and 300 be set to tagged?
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Aug 26, 2012
I have 2 SG300-10 switches, and I need two VLANs, one for internal network and one for WiFi APs.I need ports 1->4 on both switches to be part of 1st VLAN and ports 5->8 on 2nd VLAN; and port 10 uplink to 2nd switch.How I set up the VLANs and interface VLAN mode?
[code]...
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Jul 19, 2012
I have just purchased a SG300-28P switch I am using a GUI to do my config. I cant create VLANs just fine on this but I can not assign IP address to the VLANs.
I just want to have a Data and Voice VLAN on this I am planning on leaving data on VLAn 1 but I can't seem to find an option to assign an IP address to my voice vlan.
For some odd reason I cant access this switch using a console port.
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Jan 20, 2013
I have a SG300-28P that is our Main VLAN Switch. Though the VLANs that I have on it are there mostly because of our Edge Router and our AP541Ns.We have the Following VLANs defined (Subnets Changed to conseal Piblic IPs) [code]
VLAN200 and VLAN201 come into Our Edge Router and out on a Single GE Port via VLAN Tagged to thje SG300.The SG 300 Splits them out to Untagged Ports and they are connected to Two Firewalls, each with a IP in the 200 and 201 Subnets. The AP510 has the VLAN200, VLAN192 and VLA101 tagged Subnets sent to it. The AP521 has three SSID, each associated with a Paticular VLAN.
This all works fine, though there are a few hidden flaws. Since all of the VLANs are present, both Internal and Public IPs, one could craft packets form one network and use the SG300 as its gateway to the other subnet and Gain Access. How can I isolate the Subnets, so that I can still use the SG300 as a Default Gateway for the 10.1.0.0/16 Network Make it so if someone from the 10.1.0.0/16 netwok accesses the 201.201.201.0/24 Subnet it uses the SG300's 0.0.0.0 0.0.0.0 default router (the Firewall IP) and not the VLAN InterfaceIf somone in the 201, 200, 192 Subnets uses the SG300 as a Gateway and tries to access a 10.1.0.0/16 address it gets blocked.
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Mar 25, 2013
How to setup 3 SG300-52 (in L2 mode) as per this diagram:Port 1 on all switches should be able to talk to each other and access the blob at the right.The ports 25 on the other hand should only be able to talk among themselves in their own private vlan. They are to carry sensitive traffic. So I created 3 vlans, vlan 78 for ports gi1, gi51 and vlan 10 for port25,49,50 and a dummy vlan: 666 with the intent of segratating vlan 10 from vlan 78. My attempts so far have failed. ports gi49-50 are configured as trunk ports and gi1,gi51 as access ports as the following cli output (excerpts of the startup config):
vlan database
vlan 10,78,666
exit
interface vlan 1
ip address 172.16.10.11 255.255.255.0
[code]....
Ports gi1 can talk to each other and access the blob but ports 25 refuse to talk to each other. But as soon as I remove the access links to the blob they can! Obviously, at that point port gi1 lose access.Is such a topology feasable or even advisable?
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Oct 22, 2011
I've seen lots of posts from people having problems routing traffic between two vlans with some complicated examples. Any simple step-by-step example for an SG300 switch (in layer 3 mode) to configure two vlans and sending traffic between the two vlans without an external router?
-VLAN1 10.10.10.0
-VLAN2 10.10.20.0
I've tried to do this through the GUI and can't seem to make it work. I'm missing something in the GUI.
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Jul 9, 2012
I supplied 3 numbers of SG300 series switches for the sole reason to have inter-vlan routing. I created 4 VLANs in the switches and made one switch as Layer 3 switch and other 2 as Layer 2 switch. Inter-Vlan routing is working fine. I am able to ping PCs from different VLANs. But I am not to access shared folders. Customer has installed Window 2003 server installed and it is in VLAN 1. There are some folders created in this server and it is very important for users to have access to the folders.Also, I am not able to access shared folders in other VLANs. I have created a case with Cisco small business and I got a reply saying that the switches will not support shared folder feature, which I think is not real. I am getting a very time to implement this solution in the network. I have a Sonicwall firewall after Core switch which is connected to ISP.
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Mar 25, 2012
I have a SG300 Switche working in layer 3 mode.I configured 3 VLANs on the switch, assigned all ports, given IP addresses to VLANs interfaces, etc.Now I want to implement ACL to permit or deny access between vlans and hosts.Can I apply an ACL to a whole VLAN (in or out) like Catalyst models?I mean apply the ACL to the entire vlan or the only way in this model is to implement that ACL port by port?Every time I have a new port configure to work in a Vlan I have to implement the ACL?
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Feb 13, 2013
I received an SG300-MP as an RMA replacement for a Linksys SRW2008MP and I can't seem to get the SNTP to work.Previously on other devices I have only had to set the SNTP server name or IP address and that was it. So some of the options of the SG300 are foreign to me.So I first set
Administration > Time Settings > System Time > Main Clock Source (SNTP Servers) [X]
Then I set several SNTP server IP addresses
Administration > Time Settings > SNTP Unicast
SNTP Client Unicast [X] Enable
> Add
Other / 64.147.116.229 (nist1-la.ustiming.org)
Other / 24.56.178.140 (wwv.nist.gov)
Other / 128.138.141.172 (utcnist2.colorado.edu)
Other / 129.6.15.29 (time-b.nist.gov)
Some servers I set "Poll Interval" and some I didn't because I wasn't sure what this does.The status for all servers indicate "Down" with 31.12.1899 0.0.0 for the "Last Response"/I found those IP addresses via [URL] Also the setting
Administration > Time Settings > System Time SNTP Multicast / Anycast
I have disabled, and I don't know what this does either...
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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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Jun 9, 2011
I have two SG300-20 Switches and buy two MGBLX1 Modules for the Switches.
I plugedin the Modules but the Modules didn`t work and in the WebConsole i can´t see the Modules.
Is there any configuration to enable the SFP Modules? or is it a problem from my Switches
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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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Jan 25, 2012
I have an SG300-20 here for testing (firmware: 1.1.2.0, boot version: 1.0.0.4, language version: 1.1.1.6 English). Everything seems to work on it, except, that if I choose Radius authentication by mac address only, then the switch does not honor the Idle-Timeout and Session-Timeout attributes from the Radius server (freeradius).
The setup is the following: I have a no name access point plugged in to switch port gi1. The port gi1 is set up for Radius authentication by mac address only. The access point itself is authenticated, no problem with that. If I connect through the access point by (say) a mobile phone, it is authenticated, no problem. The radius server does send the Idle-Timeout and Session-Timeout attributes, I checked it by running "freeradius -X", both are set to 30 seconds. Then I turn off the wireless card in my mobile phone and check the dot1x users by "show dot1x users". My mobile phone's mac address remains there for 5-10 minutes, so the Idle-Timeout and Session-Timeout does not work.
Another way I could resolv this problem is by explicitely asking the switch to reauthenticate the user. Unfortunately there is no CLI command to do just that, I can do however a reauthentication on a port using "dot1x re-authenticate gi1" (for example). But it does not work as it is expected: the switch uses the stored mac-address to reauthenticate the user, so nothing changes on the port (unless something changes in the radius server). I think it should work like the following: remove the authenticated user from the port, and whenever that mac address makes some network traffic, then reauthenticate as if it were a completely new connection. BTW: it would work for me also if I could just remove an authenticated user from a port, but I did not find a command to do that.
As a last resort I can simply shutdown the port, bring it up again ("shutdown" and "no shutdown" in the interface config), then all users are removed from the port and they all mush reauthenticate. But it causes a network outage for a couple of seconds for all users on that port, on a busy access point it is quite disturbing, and it is not an elegant way to do this.
So my actual question is: is there a way to remove an authenticated user either automatically (Idle-Timeout and Session-Timeout) or manually from this switch?
I enclose the relevant part of the running config.
interface range gi1-2
dot1x host-mode multi-sessions
exit
vlan database
vlan 2-4
exit
[code]....
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Aug 29, 2011
These are our first switches and seems like GUI is lot different than the online. Out intervlan routing is o not working. I am absolutely sure that I setup the switch in L3 mode since it allows me to create mutiple interfaces. I am hoping that this GUI issue is related to interVLAN routing.
Below is the blog I started for InterVlan issue [URL]
This is the link for online simulator and what I see in its IP tab. I know this switch is not SG300. [URL]
This is what I see on our switch.
Our switch version
switchd64684#show version
SW version 1.1.0.73 ( date 19-Jun-2011 time 18:10:49 )
Boot version 1.0.0.4 ( date 08-Apr-2010 time 16:37:57 )
HW version V01
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May 26, 2011
1) I have a Cisco SG300-28P. I plan to add a SG300-52. Would it be possible to manage the new switch through the SG300-28P web browser ?
2) There are 2 fans in the POE model SG300-28P. How many fans are they in the non POE switch SG300-52 ?
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Feb 8, 2012
Can I connect a single Cat5e cable between two SG300-28 and link them? If so what must I configure?
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Jul 25, 2012
I have SG300-28P that I am using as layer-3 switch. Recently I ran in to SG300-52 switch and even though loading same firmware doesn't give me option to do layer-3 switching. For SG-300 I see options in GUI to create vlan interfaces under IP information section, while SG300-52 has IP information option only under the management section.let me know if these are 2 different hardware types and L3 is not possible on SG300-52. If its possible to enable L3 switching on SG300-52?
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Apr 16, 2012
I am trying to setup VLAN's in the company I work for and I am almost there but missing the part when the internet works.I have an SG300 as a L3 Router IP 192.168.0.93.I have created VLAN20 and VLAN40 Assigned VLAN20 192.168.2.1 and VLAN40 192.168.4.1
The static routes have been created and a default router going to the Sonicwall firewall at 192.168.0.1.Port 24 is configured as Untagged VLAN1, Untagged VLAN20 and VLAN40 in trunk mode and going to the Sonicwall NSA 2400. [code]
Working to move all 192.168.0.x network off of VLAN1 and move it a management switch.I have DHCP helper on pointing to the DHCP server.Both VLAN's once the DHCP server is configured to Gateway 192.168.0.93 can get an IP from the correct subnet either 192.168.2.x or 192.168.4.x
All PC's are getting a GW IP of 192.168.2.1 pr 192.168.4.1.All test PC's on both VLAN's can ping each other and any server with the correct GW.When I try to ping google.com or open a web page and try google.com it times out.
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Jun 18, 2012
I was assigned a task to configure an SG300-28P to have 3 different vlans.Now on VLAN1 their will be only one device configured with static IP 192.168.0.230,On the other 2 VLANS there will be a separate router connected on each one of them and will also act as a DHCP server.
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Mar 18, 2013
I have spent several days tearing my hair out trying to properly configure our small business switch (SG300-10p) for voice. The phones are a relatively new addition and will replace old POTS phones.Our network consists of a 1941 ISR router, the SG300-10P switch, a mac server (handing DHCP, DNS, AFP), 4 client desktops and 4 SGA525G2 IP phones. The router, server, desktops and phones all have their own connection to the switch and the second data ports on the back of the IP phones are not used. We do not have any unified comms devices for voice. Our VOIP solution is hosted by a local SIP provider, and each phone independently registers with the provider's SIP proxy over the internet.
Left almost to it’s own devices (or presumably flat, default settings on VLAN 1), this whole setup works just great. We can TFTP files, make and receive calls, and do all the usual XML stuff. Calls are crystal clear. Even the localisation and directory works. However, I’ve been told several times that to ensure good quality on VOIP calls during periods of busy traffic, I should set up some form of QoS. A Voice VLAN on the switch, I was told, is the best way to do this as it automagically gives priority to the whole voice VLAN over the normal data VLAN.
I have followed instructions in numerous manuals, articles and guides, and have managed to create the Voice VLAN, both manually and automatically (I can watch Smartport detect the phones and see the Auto Voice VLAN add the ports to the VLAN as I connect them). The trouble is, as soon as this happens, the phones lose connectivity with the rest of the network, including the DNS server and the router, and therefore the internet, causing them to lose registration with the SIP service.
I tried adding the server and router ports to the Voice VLAN and tweaking every possible combination of tagged, untagged, excluded, trunk, access, general and PVID settings I can think of (by the way, I have no idea what any of those mean). The switch is in Layer 2 mode, but adding the port connected to the router to all the VLANs does not result in internet connectivity to the phones. I have told the phones to tag frames with the VLAN ID and told them not to. I have tried upgrading firmware and I have rebooted the switch so many times I'm tired of those wretched little flashing lights.
Nothing seems to work. And so I am stuck with everything on VLAN 1. My most recent thought is that the 1941 needs to know about the Voice VLAN (I checked CDP and it knows about the switch), but I’m reluctant to start messing with the router config when this is our production network, at least without knowing what I'm doing. I don’t even know if QoS applies when a Voice VLAN is not set up and we're on VLAN 1, some articles say yes, others say no. And when it is set up right, how does that priority transfer to the router? I’ve looked in the router manual and config options and found something called 802.1Q, but I have no idea what it is, how it works or even if it applies to our situation. Can I forgo VLANs altogether and use QoS some other way, perhaps?I have googled enough to cobble together our setup in IOS up until now. Ideally, I would still like to be able to ssh or https into each device (as I do now) for management, and I’ve read about setting up a another VLAN for config, monitoring etc, but I guess that would mean routing between VLANs in Layer 3.
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Feb 20, 2013
Is it possible to configure both Catalyst WS-C2960-24PC-L and Switch Cisco SG300-28 to work together for VLANs for voice and data ? If yes, can you give me the resources which I can refer to ?
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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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Mar 11, 2011
I've been looking at picking up a 16-24 port gigabit switch that supports trunking, vlans etc. for home use.
I've looked at the Cisco SG2/300's, HP 1810g-24 and the Dell 2816 and 2824 switches, and it seems like the Cisco's are the best buy (layer 3'ish features, same price as the HP) but there isn't much about them.
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Nov 21, 2011
I'm replacing 2 3COM 4500 Swithes with the SG300-52 Cisco switch. We have 3 VLANs, 10, 20, 100. The switch is set for Layer 3 and I have setup DHCP relay. what settings i should set on the Cisco for the following setups:
3COM Setup
#
interface GigabitEthernet1/0/1
[Code].....
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Jan 1, 2013
We have several of the SG300 Serices switches. We use them to route VLAN traffic to Remote Offices, Internet Connections, and WiFi Access Points.In one remote office we have a SG300-10 setup to route the HQ Network and the remote Office Subnet. The SG300 is Connected to HQ via Fiber and has multiple Tagged VLANs on it. If I do speed tests over the Fiber Link on the Incoming Tagged Netwotk I get Decent performance, 80Mbs. If I switch to a networtk that is not priginating from HQ, and have the SG300-10 route packet, I get dismal performance. 15-20Mbs.
I Fireded up a New SG300-28P FW v1.2.7.76. Added a the HQ VLAN 101 and new VLAN 1025 . Mapped some Tagged and untagged ports for each. Switch was connected to HQ Network as untagged VLAN 101. I put a laptop on an Untagged VLAN 101 port. Ran some tests, cam back with 750-850Mbs. Great. Put the same laptop on a Tagged 101 Port, Configured the NIC for Tagged VLAN 101, Same test, same Speeds, 750-850Mbs.I then Configured laptop for Tagged VLAN 1025. Connected to tagged VLAN 1025 port. Ran speed tests, resuts were 15-20Mbs!
I then Configured laptop for Untagged VLAN 1025. Connected to unagged VLAN 1025 port. Ran speed tests, resuts were 15-20Mbs!It was only the Laptop and the Connection to the HQ net on the SG300-28P. Why is the performance of this unit soooooo poor when it needs to route?Other Switches have FW v1.0.0.27 or FW v1.1.2.0. They have Similar speed issues. All Configured for Layer 3.
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Dec 18, 2011
does the SG300 switches can be used with Microsoft NLB in Multicast mode?I know on traditional Catalyst switches you can statically "map" IP's to mac's and then to multiple ports but this doesn't seem to work correctly on the SG switches - it gives an error about the mac not being not Unicast?
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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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Jan 19, 2012
I'm having alot of trouble trying to connect more that one LAG between two SG300-52 switches.Basically i have configured both switches with the same vlans. For 2 of the vlans i would like to connect them together between the two switches using LAG. Switch1 has Vlan 5 (ports 1-12) & Vlan 10 (Ports 25-36) with LAG configured on ports 1-2 and ports 25-26. I have setup the second switch identical to the first. But when i connect the LAG's there is no connectivty. If i disconnect one LAG the other starts working.Can you only have i interconnect LAG between switches?
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Apr 22, 2012
I have two SG300 serie switches and two Gigabit connection between them. How do I configured these two links to work toghether like a one 2 Gigabit channel?
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May 1, 2012
I have a cisco Swtich SGH 300-20 Gigabit switch i configure 2 vlan one is default and one is vlan 10
Vlan 1 ip range 172.16.0.0/23
Vlan 10 ip range 172.16.2.0/24
Client on Vlan getting Proper IP from DHCP Server all i need is to distribute internet bandwidth we have 6/3 mb and i want to give 4/2 mb to vlan 1 and 2/1 mb to Vlan 10
Int Gi16 on switch is configured as trunk port and is connected to cisco 2811 router
what are the command used to distribute bandwidth between these 2 vlans
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Aug 20, 2012
I have 2 switch groups.
2 SGE2010's with VLAN's defined as 10,20 and 30
Vlan 10 is the management VLAN, and it uplinks to our border router.Vlan 20 is the workstation VLAN, and all workstations point to the switch as their default GW? Vlan 30 is the ip phone VLAN, and all phones use this as their gateway.
I would like to put a LAG between said switches, we have some servers on the ip phone switch that need to be accessed by the workstation clients, and the single 100mb link through the router is probably not going to be enough.As I understand it, because the switches have different networks on them, a simple lag will not work. I did create a lag, and assign ip addresses to each side, however in that mode, it doesn't appear I can block vlan 10 from transiting the LAG, and with out that block I will end up with a logical loop, and spanning-tree will block one of the uplinks, or the LAG itself.
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