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TOPIC: my network simulation

my network simulation 9 years 11 months ago #18848

  • Brandonh
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I have used boson simulation software i created 2 routers and 2 switches and two pc's the pc's are in different subnets after configuring the serial dce dte and bringing up the interfaces and assigning them ip addresses and adding a couple of routes i ended up being able to route between the two pc's on different subnets. I used the 2501 and the 2514. Does that mean if i had a real 2501 and 2514 and the 1900 switches i should beable to do the same thing in a real enviorment ?
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Re: my network simulation 9 years 11 months ago #18860

  • DaLight
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Apart from the fact that you would only need one router to route between two subnets, the above scenario should work in real life as well.
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simulation 9 years 11 months ago #18905

  • Brandonh
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yeah in theory you could route between as many subnets as the router had interfaces with a single router right ?
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Re: my network simulation 9 years 11 months ago #18922

  • DaLight
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That's generally true unless you consider the "Router-on-a-stick" option.
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router on a stick 9 years 11 months ago #18923

  • Brandonh
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can you explain to me this router on a stick ?
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Re: my network simulation 9 years 11 months ago #18924

  • Smurf
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Router on a stick is refering to utilising VLAN Trunking to a router to then route between the VLAN and send the traffic back to the switch on the correct VLAN.

If you have for example 4 VLAN's configured on your switch and you create a VLAN TRunk to the router, the router is then able to route between the VLAN's using the 802.1q/ISL trunking to encapsulate the VLAN traffic.

Basically, the VLAN2 traffic goes to the router, the router will then de-encapsulate the VLAN information, see where its being sent to (i.e. a different VLAN down the trunck), it will then re-encapsulate the packet with the new VLAN (say VLAN4) and then send it down the trunk to the switch, its then tagged for the correct VLAN
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