Routers / Switches :: How To Check Broadcast On Switches
Apr 26, 2011how to check and trouble shot broadcast issues on network
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Routers / Switches :: RSTP Status Is Flapping With Broadcast Data?
Mar 16, 2011RSTP port role in the switches are flapping if broadcast data is flowing through the ring. Also I've tried applying broadcast suppression to all the port to 64kbps for ports of 100Mbps/1Gbps, All the devices I'm using are L2 switches.
View 1 Replies View RelatedCisco Switches :: SG-300 Series - Network Loop Broadcast Storm
Sep 12, 2012So the SG300's have STP on them and prevent network loops when other switches on the network also support STP too. However, if someone plugs in a non-managed switch that doesn't support STP with a network loop, is there anything within the SG300 switches to isolate and/or prevent that from happening?
(I currently have port mirroring turned on for one port and a network sniffer attached awaiting the incident to happen again).
Cisco WAN :: 3500 - How To Check Switches Support IPV6 In LAN
Feb 6, 2013i want ti migrade lan from ipv4 to ipv6.. how can i check my switch support ipv6?
i am having cisco 3500 and d-link managed and unmanaged switchs.
Routers / Switches :: Setup An Home Network With A Wireless Router And Use Multiple Switches?
Jan 29, 2011I want to setup an home network with a wireless router and use multiple switches for wired connections through out my home. I currently have an Airport extreme hooked up to a cable modem and a leviton gateway hooked up to the Airport. The 2 computers connected to the Leviton are on a windows 7 homegroup and share fine, but won't share or discover any wireless device connected to Airport. My main goal is to have a wireless/wired network with all computers sharing information with each other. I want 2-3 wired switches/gateways with a min of 2 devices connected to each, connected to my wireless router whiich is connected to cable modem.
View 3 Replies View RelatedRouters / Switches :: Connect 2 Subnets With Two Switches And One Router Using SIM Software?
Apr 23, 2011how to connect two subnets with two switches and one router using router sim software?
View 1 Replies View RelatedCisco Switching/Routing :: 3750x Switches / 32 Loop Back Responding As A Broadcast?
Jun 7, 2012I have a bunch of 3750x switches that each have a 10 gig routed link back to a central 4507 (loopback = 172.30.255.255).We carved up a /24 (of course, the /24 doesn't really exist except in our address tracking spreadsheet) into a bunch of /30's for routed WAN links and /32's for loopback addresses.We started on the low end for /30 subnets (ie 172.30.255.0/30, 172.30.255.4/30, etc.).We started at the high end for the /32 loopbacks (ie 172.30.255.255/32, 172.30.255.254/32, etc.)
Well, when I try pinging 172.30.255.255 from the access layer 3750x switches, the 3750x seems to be treating it as a broadcast ping where it lists each member that responds instead of the regular !!!!! response (this makes think something is odd with the 3750x). Of course, only one member responds (the core). But even the core seems to respond with the other end of the /30 instead of the actual /32 loopback (which makes me think something is odd in the core). I could have sworn that I've setup similar topologies without problems (ie, using 10.0.0.0/32, 10.255.255.255/32, etc as loopbacks) and as long as the mask is a /32, it should work.Also, I can ping/ssh to that loopback if my laptop is on a directly connected subnet. But I can't do it from any of the 3750x switches (which are also directly connected).I've double checked for overlapping subnets, but nope. I don't see any. Routing looks fine. The actual /32 is being propagated everywhere properly.
Cisco Switches :: SG300-52 How To Turn Off MDNS Broadcast Coming From Vlan Interface
Aug 1, 2011model: SG300-52
version: 1.1.0.73
Switch is running in layer 3 mode.How can I turn off mDNS broadcast coming from the vlan interface on the switch.Getting mDNS broadcast from switch every 5 seconds.
Routers / Switches :: Daisy Chain 3 Switches And Not Have Ip Conflict?
Jan 31, 2011Is it possible to daisy chain 3 switches and not have ip conflict? I am running a public access network for a library. For certain library software I need for all workstations to see each other. I have 25 workstations in total and two separate management consoles. I have all workstations on two switches but one of the management consoles is on the third switch because when joined with the others it has an ip conflict. I need this console for the digital sender that is connected as well as to act as a server for go print software.
View 3 Replies View RelatedRouters / Switches :: Smurf Attacks On Belkin Wireless Routers Reply?
Jan 2, 2013If your wireless indicator is flashing red when you discover the smurf, it can mean that someone has tried to logon with an incorrect password. this is not necessarily an attack, it could be someone you have allowed access too, who has forgotten the password? In this case entering the correct password will solve the problem.However putting your own MAC address into the filter will simply block your own machine.
View 6 Replies View RelatedCisco Switching/Routing :: 3750 Stackable Switches Etherchannel To Core Switches
Nov 18, 2011If I have two stackable switches one switch uplinks to one 6509 core switch and the other connection uplinks to another 6509 core switch, and also the other stackable switch does not connect to the core switches. Because I am using hsrp and also we are not using vss then one uplink to the core is not in used only ones is so then how does creating an etherchannel between does two uplinks to both core switches benefit me in anyway such as more bandwith and using both uplinks at the same time or I'm I wrong?
View 7 Replies View RelatedCisco Switches :: SGE2010 Switches / VLANs And A Blocked Port In Spanning-tree?
Aug 20, 2012I 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.
Cisco Switching/Routing :: 3750 Stackable Switches And 6509 Core Switches
Nov 14, 2011If I have two stackable switches were only one stackable switch has two uplinks one uplink goes to one core 6509 switch and the other uplink goes to the other 6509 core switch can a Layer 3 etherchannel be used if each uplink go to a different core switch, by the way hsrp is running between both switches and also can you give an example how data will be routed from the stackable switch through the ethernetchannel to one of the core switch accross the WAN to another core switch?
View 1 Replies View RelatedCisco Switches :: Connect 2 SGE200 Series Switches Over Gbit / Fiber
Mar 27, 2013I have a stack of 6 switches and I want to add another over the gbit connector using fiber. I already connected but I can acces the network from the new switch. I don't have any issues on my Stack all resources are available Do I need to do some special setup or connection to enable this? Can be stacked like the others? I already usen the 2 stacking port can i Add another switch?
View 3 Replies View RelatedRouters / Switches :: Transfer WAN From Radio Receiver Through Chain Of Routers
May 24, 2012For my work I am looking to create wireless capabilities to remote locations. To do this we are using a standard modem/router that is connected to an Engenius (802.11b/g) wireless outdoor radio connected to a dish antenna. We are able to go to locations (3+km) and then with a corresponding receiving antenna (using LoS), receive the Internet and connect both to computers at the transmitting point as well as to the WWW. The problem exists is that we want to employ a series of routers at the receiving end that would be able to carry the transmission to a different location (relatively close), due to the fact that some of the locations do not have line of sight to the antennas. We are using Encore routers, model # ENHWI-N3. When we connect the radio's Ethernet into the routers WAN reciever, we can connect to the Internet with a computer. The problem exists is we want to pass that connection over to a second router (R2). This connection is done when the routers are on access points set to a WDS function with R1 having R2's mac address and vice versa. Both routers are set to channel 1. Even when the routers are seperated by distances >50m a computer plugged into R2 can see a computer plugged into R1. Files can be transferred between the 2 computers wirelessly at speed around 3 mbps. However computer 2 on R2 can not connect to the WWW. This router features a spot that lights up if it has Internet access and R1's is lit up but R2's is not. How do we transfer the Internet and not just a LAN from R1 to R2 so it can be accessed further away from the point of the radio and antenna equipment. This setup has also been used where R2 is hardwired to R3. At R3 we change the channel to 11, and then connect through that with mac addresses wirelessly to 4th router. If comp is in R4 and far away it can still access and file share from comp at R1.*edit the ip address for the routers exist all on 192.168.1.xxx If the 3rd number is different between routers would this make a difference?
View 1 Replies View RelatedRouters / Switches :: D-Link And Linksys Routers Plus Modem Connection
May 26, 2011everything was all good, my brother went crazy and unplugged everything.it effects our house phone too, that could be the problem.i just dont know what wires went where. all the wires are the same color.but i know which is which. just again, dont know where.i would like to get it done before he gets home later on.
View 1 Replies View RelatedCisco Switches :: No Command Line Interface On SF200 Small Business Smart Switches?
Sep 20, 2012we just received 5 new SF200-48 Smart Switches for small business. I noticed only way I can configure them is by using the web gui. Is there a way to enable good old CLI?
View 6 Replies View RelatedCisco Switches :: How To Config VLAN On 2 Switches SF300-24 Layer 3
Oct 6, 2011now we have 2 switches: SF300-24..on one SF300-24 we config it at layer 3 mode with VLAN configuration same as following [code] And we use port 26 on 2 switches SF300-24 is trunk mode then we connect both SF300-24 switches.But on SF300-24 layer 2 cann't inderstand VLAN from Sf300-24 layer 3..How to config VLAN on 2 switches SF300-24 Layer 3 and SF300-24 layer 2?
View 2 Replies View RelatedCisco Switches :: SG30028P - Implementing QOS For Over Multiple Switches For Two Vlans
Jul 17, 2012I was looking for configuring QOS for two VLANS i have created. these will be for voice traffic vlan 22 and video traffic vlan23. i also have three other vlans for pc's, wireless devices and our cnc machines. we have 5 switches that are all SG30028P's with a single switch doing the intervlan routing (operating at layer 3). all of the switches are trunked back to the main switch and ive been through the guide written on how to do this on a single switch which i dont think is layer 3.
View 5 Replies View RelatedCisco Switches :: Replacing 3COM 4500 Switches With SG300-52?
Nov 21, 2011I'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].....
Cisco Switches :: Retrieving ARP Table From SF300 Switches Using SNMP?
May 22, 2012I'm setting up an SNMP poller to retrieve the ARP table (ipNetToMediaPhysAddress) from my SF300 switches. I can retrieve the table from SF300-24P and SF300-48P switches running Firmware Version 1.0.0.27, but get garbage for the MAC address when retrieving that same table on the same model switches running Firmware Version 1.1.1.8. Is there an outstanding defect on this code level? How can I retrieve the table showing the IP address to MAC address mappings?
View 1 Replies View RelatedCisco Switches :: SG300 Switches Have Poor Performance In Layer 3?
Jan 1, 2013We 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.
Cisco Switches :: SG300 Switches Can Be Used With Microsoft NLB In Multicast Mode
Dec 18, 2011does 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?
View 2 Replies View RelatedCisco Switches :: SG200-18 Switches With LC Single Mode Fiber SFP's
Dec 2, 2012We 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?
Cisco Switches :: VLAN Management Via SNMP On SG300-10 Switches
Aug 7, 2011Any 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.
View 8 Replies View RelatedCisco Switches :: SGE2010 Can Use 4 SFP Ports And Stack Of Two Switches At Same Time
Feb 15, 2012I looking to buy SGE 2010 swith, but I have some question:
1. Can I use 4 SFP ports and stack of two switches at the same time.
2. Is it possible to use for stacking ports other than 24, 48?
3. What is maximum possible number of ports to use for stacking (can I get more than 1Gb thruput).
Cisco Switches :: Multiple VLANS And SG300-28P Switches Setup?
Aug 20, 2012I'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?
Routers / Switches :: How To Install Two Wireless Routers In Series
Dec 31, 2012The first router is wired to the DSL modem and works just fine as an access point with Internet access. The second router is wired from the first router using one of the 4 ports on both router hubs. The second router is visible but has no Internet. How to configure the second router regarding DHCP, LAN, WAN, DNS etc.
View 3 Replies View RelatedRouters / Switches :: Change Two Old DLink Routers To Repeaters
Nov 28, 2011What are procedures to deactivate di-604+di-704 routers+make the repeaters,connecting each of them,in a wired fashion,to my Belkin wireless N router?
View 1 Replies View RelatedRouters / Switches :: Install 3 Routers In One Location With Same Password?
Mar 10, 2012how to installs 3 router with same password
View 2 Replies View RelatedRouters / Switches :: Networking With Switch / Bridge And Routers?
Jun 13, 2011modem
........ |
........ |
----switch-----
|................ |
|................ |
Router 1.... Router 2
|..................... |
|..................... |
Computer 1.....Computer 2
......................Computer 3 Router 1 points to a VPNRouter 2 access to the internetComputer 3 needs to access router 1 (VPN). Both Computer 2 and 3 are in a different room than computer 1, and router 1. Computer 2 is networked via cat5e to router 2.Is is possible to have Computer 2 and 3 share the cat5e, yet access different routers?
Routers / Switches :: Possible To Connect 2 Routers To One Phone Line
Apr 30, 2011Can I connect 2 routers to one phone line so that I can receive a wireless internet connection throughout my house?
View 1 Replies View RelatedCIsco Switches :: SGE-2010 How To Wire Switches For Stacking
Dec 13, 2011We had a SGE-2010, just purchased 2 (two) SGE-2010P. I want to stack the switches (all 3) (unless there is a better way). Not sure what is needed hardware wise, and how to physically wire the switches. Had switches years ago (diff brand) that used a special cable that connected the switches. It seems that is not the case here. I have not used fiber in networking before so I am new to that part, I’m willing to learn, just need pointed in the right direction.Can all three switches be stacked, (1) SGE-2010 & (2) SGE-2010P? I THINK I need to use the GBIC port 4 to stack, I understand 1 port is enough if two switches are used, but what about three or more switches.What are the other GBIC ports used for? Will I be better off (can I ) use the GBIC ports LAG (2 ports) to the other switches? Or would regular ports work just as well?
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