Cisco Switches :: TCAM Utilization On SG300 28P?
Aug 6, 2012
I have 1 x SG300 28P in Layer 3 mode which is the default gateway for all the IP phones that will be installed. The PC's ont he network will use the existing default gateway which is another router. I will have another 2 x SG300 28P devices in layer 2 mode which are connected to the Layer 3 SG300 28P.
My question - Are the IP's that registered against the TCAM limit only the devies which physically plug into the SG300 28P switches ? I assume other computers on the network which are plugged into another switch and don't use the default gateway of the SG300 (its only for voice) they then wouldn't be registered in the TCAM ?
The site has around 65 computers currently and obviously plugging in 65 IP phones we're going to hit a limit of over 100 IP's. My thoughts were to potentially keep the computers and Phones seperate on a couple of the switches to keep the IP's in the TCAM to a minimum..
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Jun 24, 2012
I have one question regarding switch sg300-10. How can i check current interface utilization in bits/second? If I use show int counters I can only see number of unicast, broadcast and multicast packets....plus total packets. But there is no info regarding input and output rate for particular interface (like in original IOS when using show interface command).
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Apr 21, 2012
How to get tcam utilization by using snmp on ASR100x?
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Apr 16, 2013
I'd like to know what is "masks" in the output of show platform tcam utilization. What does 784 mean? What effect has the number of mask in the amount of supported unicast direct routes?
I'm having trouble comparing the capacity of theese two switches, regarding unicast directly-connected routes. I know the second switch has cpu utilization issues and ip unicast failed routes over 4096 arp entries. What would be the case for the first one?
Switch 1:
CAM Utilization for ASIC# 0 Max Used
Masks/Values Masks/values
Unicast mac addresses: 784/6272 12/26
IPv4 IGMP groups + multicast routes: 144/1152 6/26
[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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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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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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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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Aug 17, 2012
High CPU Utilization on Cisco SGE-2000
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Dec 18, 2011
How can i get information about the back plane utilization. is there any command for the SB-switches (sg300).
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Aug 3, 2011
I'm using a stack of four SGE2000P switches for a PoE video camera system. I've got the cameras in a VLAN and everything's working fine.
I'm wondering, though, is there a way to find out what data rate the stack interfaces are working at (since it's going over cable infrastructure we put in ourselves), and also what percentage of that bandwidth is being used? I don't see anyway to get to those interfaces from the main page, and I wasn't able to find a way to do any sort of percentage thing even on a regular interface.
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May 9, 2011
I have a question, does the SG300-28 support VTP and STP?. I want to add it to my network's VTP domain so I don't have to manage vlans manually on the SG300-28 and also be able to configure STP to keep my network loop free.
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Jul 19, 2012
On my SG300 I set up LAG for the last two ports.
I then plugged them into my SRW224G4P, once I do that I get dropped packets.
I was thinking maybe doing firmware upgrades to both switches?
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Jan 29, 2012
I need to know how to configure each port in switch SG300-10 to vlans, i need to configure one port "trunk" with catalyst switch and assign 4 ports to different vlans. any solution?
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Jun 20, 2012
In the CLI documentation for the SG 300 Series, it shows sh ip route rip as a command. I have installed the latest firmware and that command is no longer available. Does the SG300 series support RIP?
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Jan 27, 2013
We purchased a SG300-52 last week to replace a 5yr old Dlink which has worked perfectly. 1 day after the SG300 went it it started crashing with this fatal error problem so I reverted the firmware back from 1.2.7.76 (latest) to 1.1.2.0 but I still get the problems. It crashes when I have it on my lan with users connected or if I just have the switch on my desk with just my laptop connected, so it cant be a load issue or a network topology issue. I already have a Cisco SGE2010 on my network without problems.
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Mar 15, 2011
I have a question about ACL and binding. I have a SG300 28P and a couple of other linksys switches and Access points that are connected to it via trunks. The cisco SG300 28P is running in layer3 mode and i have created a couple of vlans and one of them is a guest vlan. Now to my question, i create an ACL and an ACE that vill funktion so that guest vlan only can connect to the internet and not the rest of the internal network. And then i must bound the ACL to an interface port or lag, what i can see it is not possible to bind it to an vlan? so if i have a port on some of the other switches that is member of the guest vlan, vill the ACL on the SG 300 stop guest vlan trafic to the internal network that is comming from some of the other switches?
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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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Mar 1, 2013
Yesterday I upgraded my SG300-10P to firmware 1.2.7.76. I was curious about the new SYN Protection feature, but it seems to do nothing on my installation.
The switch is running in Layer 2 mode. I have ACLs in place and DoS prevention is not enabled. I also tried clearing ACLs and enabling DoS prevention. As I understood the Admin Guide enabling DoS in the Security Suite Settings is not necessary for using the SYN Protection.
In my firewall I see about 300 pps with SYN flags only arriving. What "they" do is sending me SYN packest to port 80 from forged IPs, so that my system should send SYN-ACKs to the victim system. In this case it is the Arab Bank. They are down at the moment...I think that is called a spoofed SYN flood attack.
So I thougt the SYN Protection feature should exactly solve that problem but it does not and does not show any "Last Attack" entries.
If I put a SYN filter in place it works, even if I put SYN Rate Protection in place. But that is just a dirty workaround. My firewall blocks those SYN packets with a SNORT rule.
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Apr 8, 2012
we have two 6513 core switches redundant to each other by using HSRP and MST. Currently we have a problem in a CPU as it's high in both cores as appeared in the following logging message:
1: 04/09/12 16:06:20 7/-1: MAJ, GOLD,
test_sp_rp_inband_ping[7]: diag_hit_sp_sys_limit. SP-RP Ping Test skipped. Reason(s): netint_thr_active[1].
[Code].....
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Feb 14, 2013
Is there an SG300 or SG500 that has all ports as SFP ports?
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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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May 10, 2013
I bought the SG300-10 Switch a few days ago and updated it to firmware 1.3.0.59, but i think there's a bug in this firmware. If I go to "IP Configuration" IPv4 Routes" in L3 Mode nothing is displayed. In the log file i see that:
21474773112013-Mar-16 09:51:34Error%HTTP_HTTPS-E-DIAGNOSTICS: ERROR - in <RL_vtLeadTableGet> tag, can not find the table rlInetRoutingDistanceTable in the MIB. 21474775182013-Mar-14 22:39:22Error%HTTP_HTTPS-E-DIAGNOSTICS: ERROR - in <RL_vtLeadTableGet> tag, can not find the table rlInetRoutingDistanceTable in the MIB., aggregated (1)
Reset of the Switch doesn't work.
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Sep 4, 2012
We are in an organization of 80 users with 5 Sx300 series switches with the latest firmware (1.2.7.76). The network is mostly flat with all switches feeding into a Cisco ASA5505 acing as the primary gateway for Internet Access. Only our two 48 port POE switches have an additional vlan configured for the VoIP phones. We have one SG300-10MP that is powering 5 Cisco Aironet 1024N's that keeps crashing. A couple weeks ago it went down twice in one day. I updated the firmware and it did not have any hiccups unitl today. This issue has been consistent since we installed the switch in April. Originally the issue seemed to be caused by too much bonjour traffic causing a buffer overflow (we have over 100 Apple products). Since I updated the switch I have not seen any bonjour buffer overflow errors. Instead I get the following error when it crashes:
2147424534 2012-Sep-05 15:12:28 Emergency %SYSLOG-F-OSFATAL: FATAL ERROR: tExcTask: ABORT DATA exception ***** FATAL ERROR ***** SW Version : 1.2.7.76 Version Date: 19-Jul-2012 Version Time: 17:54:43 Instruction 0x18 Exception vector 0x10 Program state register 0x80000092 %SNMP-I-CDBITEMSNUM: Number of startup configur ation items loaded: 133 %LINK-W-Down: gi1 %LINK-W-Down: gi2 %LINK-W-Down: gi3 %LINK-W-Down: gi4 %LINK-W-Down: gi5 %LINK-W-Down: gi6 %LINK-W-Down: gi7 %LINK-W-Down: gi8 %LINK-W-Down: gi9 %LINK-W-Down: gi10 %LINK-I-Up: gi9 %LINK-I-Up: Vlan 1 %LINK-I-Up: gi1 %STP-W-PORTSTATUS: gi9: STP status Fo
The CPU and PoE supply are far from being overloaded.
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Apr 8, 2013
Currently I have my SG300 connected to a Wireless Router which is, in turn, connected to a Cable Modem.
I'm considering adding a second cable modem. Can the SG300 handle that?
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Sep 10, 2011
I am having an issue with LAG configuration on a Cisco SG300 52 switch. I have connected four Ge ports on the switch to the four NICs of a Dell R710 Server on which I installed Windows Server 2008 R2. Without LAG configured, these ports would forward traffic to and from the Dell server fine.However, if I configure LAG on the ports with LACP enabled, then they would not forward any network traffic. Debugging shows that the ports are up but their forwarding status show N/A. Am I missing any configuration? Can I configure LAG on edgeports?
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