Cisco :: Getting Switch / Router Refresher?
Sep 24, 2012
I am AD AF that is SUPPOSED to be managing networks. I have been out of the loop for a couple of years because, well basically, the AF tells me to do other things that I am not skilled in. So I need a refresher...I am ALSO a net admin for a lawyer 1,500 miles away. I remotely manage his already setup network.Right now we have a Cisco RV016 VLAN Router (I believe it has 15 or so ports on it) that is pretty old. So we are doing a tech refresh. We are replacing it with a Cisco RV042G Gigabit Router and a Cisco SG300-20 Gigabit Switch.
When I pull the cat5 out of the existing router and run it into the new switch (which will uplink to the new router), what all do I need to configure on the switch before I run it to the router? Or do I configure the router first? Or do I connect it all simultaneously? Does the switch have to be on the same subnet as the router and the rest of the network, or do I want to assign it an IP outside of that subnet (I think it is the latter). DHCP is configured on the server (there are only ~13 client PCs), so what I am trying to remember is, since the switch is closer to the nodes than the router, how is it directing traffic? The router is what is directing traffic, the switch just pumps the data on to the network?
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Apr 23, 2012
I need 10gigbit uplink for this switch. What are the other devices that i need order along with this device.And what is the diff between X2-10GB-LR= and CVR-X2-SFP.if i take CVR-X2-SFP, in future how can i upgrade from one gig to 10 gig?for current use i need 10gig support required. so what are all the other devices that i need to order.Fiber multimode and distance 15Mt only.
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Jun 28, 2012
I have a problem, i would like todo MACSEC betwwen two switches cisco catalyst 3560-x but I know that for this operation i needed ACS server 5.1 is it possible to encryp dataflow without ACS server and if you have the configuration
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Nov 2, 2011
i have an issue to connect a trunk between cisco switch and extreme switch i have many vlans that i want to cross via a link between cisco 3750 switch and a Extreme Alpine 3800 switch
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Dec 28, 2008
what is the use of no switch port command in L3 switch?
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Nov 18, 2012
I have two 3750-X configured to be a stack and I am planning to re-rack these somewhere else. What I would like to know is what are the effects of having the master switch itself lose power? Does it immediately just make the member take over master (there should be no election since there are only 2 switches??) and there would be no loss of connectivity?
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Sep 30, 2012
I need to switch back to my old router currently I am using the EA6500 in the GUI of the latest firmware there is no longer a button "Release IP Address" but it has been replaced with "Release and Renew" button this is causing that the IP address lease form ISP never gets released and I can not switch the routers.
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Nov 20, 2009
I have a Catalyst 4006 switch in production and a spare switch of same model. I have to quickly copy the configuration from production switch to spare switch (both L2 and L3 configurations) How do I do that?
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Apr 15, 2013
I have a 2 cisco switches that are at different sites one is a Cisco CAT4500 and other 3560. The connection between the switches is a layer 2 fibre link. CAT4500 and 3560 both have VLAN interface ip addresses in order for me to connect to the switches.
I have PC A connected to CAT4500 and PC B connecting to 3560. All these devices are the same VLAN and in the same subnet. I do have trunk links all the way though allowing this vlan as we run vlans. From PC A, I can ping CAT4500, 3560 and even PC B. This tells me everything is fine regarding Layer 2 & 3.
As soon as I move PC B and connect it to the other switch CAT4500 or move the other PC vice versa (this happens in both directions). Both switches learn that the mac address has moved locations and updates its mac address table accordingly. So when I do a show mac address table and show arp, everything has learned and moved fine. However when I try to ping any other device from PC B I cannot. So the 3560 switch PC B was originally connected to, I can no longer ping, the switch cannot see the pc also. It is as if PC B has not learned anything from the switch and cannot respond or reply to any icmp. I have tried this with different end devices, same thing. I am now thinking it has something to do with the switch.
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Jan 16, 2011
is it possible to assign a loopback address to a typical switch port on a 2950 switch? I want to be able to have some devices connected to a switch to test access lists and VLANs.
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Sep 8, 2012
what 'A DSL router is also a switch, albeit an unsophisticated one (usually).' mean.
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Mar 26, 2013
I have this ARRIS router from Comcast that actually blocks some ports, so I can't use certain programs. I noticed this cause when I played this game, Ragnarok Online, I googled that it needs to open certain ports for me to login. Another would be my CoD, where I need to open some ports to join certain games.
Then I told my roommate that we need more LAN ports for our xbox, ps3 and TV. So we used this old router as a switch. At first, we used 1 of 4 LAN ports of the ARRIS Comcast router to the "Internet" port of the old router, so we thought we would have 4 more LAN ports provided by the old router. First day, it actually worked, and I was surprised that some sites aren't blocked, and I can login to Ragnarok Online. After some time, it stopped working, so I googled it then it says I have to Disable DHCP, use an IP address that's not used by the ARRIS router, then plug in the cable to 1 of the 4 LAN ports of the old router, not the "Internet" port. I did, then it worked again.
It did work as a switch, but how come it worked before where no sites/ports are blocked?To sum it all up, is there a way to make the switch (old router) work when I plugged the cable on the "Internet" port?
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Nov 30, 2012
Can someone give me a sample router config (Cisco801) for the below scenario. Not familiar with networking.Server with 2 nic, connected to 2 different switches, each switch connected two lan interfaces of Same cisco801 for redundancy.Server must be able to reach gateway IP (in router) in case of either switch failure/server NIC failure.I also have 2 vlans, going to use same link for management vlan and application vlan.
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Feb 5, 2012
I only have access to 1 pc and 1 router/switch.I know how to make the pc a tftp server with a tftp server program, which i can then upload my router config to.I now do not have access to that tftp program anymore and am trying to find another way to save the router config(not to nvram on the actual router but to my local pc).I have heard of peopel doing it with putty saving the log onto a file but how would you load that log??
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Jan 2, 2011
My company has a spare 7200 VXR, originally planned to be placed on our TDM network. This plan was not followed through, but I'd like to switch it's function to work as a core router on our BGP network. I'd like for this 7200 to be able to handle full routes from our eBGP peer, something the SUP module in my 6500 isn't capable of doing. What kind of SUP module should i look at replacing this 7200 VXR with?
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Feb 14, 2011
I'm trying to set up QoS between a 2811 router and a 3750g switch. I'm currently using the 3750 as the router for one side, having the interface connecting to the router as a routed interface.
I have this config on the router side:
class-map match-any IPTel-Traffic-CL
match ip dscp ef
match ip precedence 5
[Code]......
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Aug 21, 2011
Apart from the ability to participate in BGP, is there any reason you should use a router on an internet edge rather than the SG-300 switch?
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Feb 25, 2013
I contact you due that I’m currently configuring a Router Cisco 2921 with an Etherswitch module. The specific inventory of Router Cisco 2921 is:
Router#show inventory,NAME: "CISCO2921/K9 chassis", DESCR: "CISCO2921/K9 chassis"
PID: CISCO2921/K9 , VID: V06 , SN: XXXXXXXXXXX
NAME: "High Speed WAN Interface Card - 1 Port Gigabit Ethernet on Slot 0 SubSlot 0", DESCR: "High Speed WAN Interface Card - 1 Port Gigabit Ethernet"
PID: HWIC-1GE-SFP , VID: V01 , SN: XXXXXXXXXXX"
[Code]....
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Apr 11, 2012
Is it possible to have two connections from a router to a switch?
Currently we have a wired connection going direct to the the switch however we would like to have a backup wireless connection via two range extenders.
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Sep 28, 2012
I've currently got my network setup similar to the picture below, except:
1. I only have PC1 and PC3 connected. Both PCs are running Windows 7.
2. I've got an XBox and PS3 connected to the router
My ISP provides two IP addresses, PC1 has its own IP and the Router has the other one. All devices are able to connect to the internet; however, PC1 is not able to communicate with the devices connected to the router. Is there anyway to get this network to work? I basically want it as if all devices were just connected to the router, but with PC1 having its own IP, and the Router having its own IP.I've used the exact same configuration in the past with both computers running Windows XP and was able to get the two computers to communicate by installing some protocol. However, I heard that the protocol was really outdated or something and not good to use for security reasons, but it did what I wanted it to do so I used it.
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May 27, 2011
I have been charged by our technician to find a 5-8 port gigabit switch with a wireless option built in. This will be part of a build out that he is doing that includes a
NETGEAR ProSafe FS726TP Smart Switch - Switch - managed - 24 x 10/100 + 2 x combo Gigabit SFP - desktop - PoE
I was told if he had to have a router to be sure that he can turn off the routing abilties. As I peruse through the definitions of various wireless routers with additional ports I don't see this option spelled out.
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Aug 19, 2012
I have 1 computer, desktop, and would like to hook up a wireless to use for phone and kindle,etc. Question is shoud I use a switch or router? I have a netgear fs105 and hooked it up but was told it's not wireless (that's how much I know). Have Vista. and dsl.
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Oct 15, 2011
I have a Linksys E3000 router that I've been using to connect my XBox online wirelessly. But I just got UVerse and now I have a set top box that I can connect to the XBox with an ethernet cable instead. I want to connect my PS3 online also, so I plan to connect the set top box to the router with an ethernet cable, then connect the XBox and PS3 to the router with cables. (The router would not be connected to a computer.) I just want to know, will this work? Do I need to set up the router in any way to act as a switch, and if so, how?
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Oct 10, 2012
A switch and a router are both pretty straight forward in regards to how they work. Tho I have a problem with the router. I have 5 computers in my home and we have 5 different ips for the computers to use, these are handled by a switch. <Note: these are 5 *unique* ips that does NOT share bandwidth>
Recently I got a router and when I plugged it in it only gave us 1 ip to share amongst all 5 computers. This is a pretty big problem as we all of the sudden *share* the bandwidth. <Edit: the problem is that the router only gives us 1 of the 5 ips for the whole network to share>.What I wonder is what is it called when you get a router to accept multiple external ips and spread them out across the network, like a switch does? I assume this is a "special" feature on routers?
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Feb 12, 2012
I have three different network with different static IP's and I want to connect those routers with one switch. If any case any network gos down then another taking care automatically.
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Feb 12, 2011
i bought me a router so that me and a few other friends could play to star craft 2, but i would like to know that if i could play an LAN with NO internet on it?
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Jun 1, 2011
can i use dlink switch as a router to set up LAN
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May 29, 2011
I am dealing with cisco networking and am using cisco packet tracer bt i want to configure router but when dragging modules (ports) it tells me you cant drag modules when power is on
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Dec 11, 2012
The ultimate setup thread mentioned only connecting routers together, and it would be cheaper (would it?) to get a new router and a switch instead of two routers of the same type.I admit I don't know much about networking. I tried Googling, but kept getting results about people asking what the difference between a switch and a router is, or how to set up two subnets on one router or switch.My current router is pretty old, its a V2 WRT54GS. I don't want to let it go but the lack of WiFi-n and Gigabit can get limiting, especially when sending large files across systems on a network or streaming video.However, I have another issue that wouldn't really be resolved by replacing it anyway, the fact that most if not all home routers have 4 Ethernet ports max. The amount of wired devices I use in the same area is increasing, and while I can switch some of them to wireless to make room for the wired-only ones, I would prefer not to. Some of these are multimedia or gaming devices and I would prefer the lower latency as well as higher LAN network speeds of Ethernet for them. I was told that I can connect a switch to my router and have everything act as if its on the same subnet.Will devices plugged directly into the router and those on the switch act as if they are on the same subnet and see each other without issue? Wouldn't this cut down on the speed of the devices if I have several plugged into the switch since they are sharing the single port the switch is plugged into the router with? Would it be better to get a switch with several gigabit ports and just plug everything into that for LAN speed? Its not like the WAN connection will come anywhere even close to 100Mbit, much less Gigabit, but would that still cause a bottleneck if several devices are trying to access the WAN over a switch that is plugged into a single port on the router, or no? Or would it be better to plug as many devices as I can into the router and the rest into the switch?
P.S. I use static IPs because I like to know which device has what IP to communicate with them directly if need be, and the WRT54GS has no way for my to reserve an IP based on port, MAC, or anything. Would that cause a problem? Is there any way to assign/reserve IPs on the newer routers (especially Linksys) with their stock firmware so I can switch to DHCP for guest devices?
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Feb 15, 2012
in our living room there lies our desktop with a modem which i believe is in bridged mode hooked up to a 4 port router that provides wireless connection as well but is sort of old and brand is from CD-R king,then from that router all the way to my bedroom is connected to a switch via a 25 meter Ethernet cable providing wired connection to my personal desktop and 1 laptop(wanted 100Mbps than 54.0Mbps plus less chance of getting intermittent connection to the laptop and we play LAN games with me on desktop and bro on laptop), and i was wondering, if i hook up a router to my switch will it also be possible to provide wireless connection to that as well?
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May 6, 2011
I want to be able to easily switch off the internet, but stay connected to my local network. I'm trying to set up an arrangement that allows computer 1 to disconnect from the Internet, but stay connected to the local network, so computer 2 can still access the printer that is slaved to computer 1, and let computer 2 connect to the internet anytime.If absolutely necessary, I have a second Router that might be employed, for switching purposes. The trick is to be able to do this switching simply. Can I issue a command from computer 1 that will let me disconnect from the internet, but stay on the local network?
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Jan 17, 2012
If i want to setup a router and switch in my small business... 11 computers. Can i run 2 switches into one router or is it better to run one larger switch into one router. Second is when I set it up do I need to assign addresses to each computer or do I just need to plug them in and setup the network with windows network wizard. I will have a shared drive on one of the computers or possably some network storage.
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Feb 25, 2011
We are using D-Link DSS-16+ Ethernet Hub Switch and the broadband modem (1Mbps) is directly connected to the hub and it's currently working.Now we have a D-Link Ethernet Router DIR-100 (got it free when we bought the PCs) and an extra broadband modem (from the our home) and I was planning to add it in our shop. I will still be using our current network connection, but I was planning to add the router and that extra modem for the server. I want to use the modems separately; the first one for the 14 computers and the extra one for the server. how to config them?
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