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What solution do you think of following situation :-
Switch X, is connected to router A and router B. Where both routers are for internet connection.
Router A has DHCP running and have ip on lan 192.168.1.1/24.
Router B has DHCP running and have ip on lan 192.168.100.1/24.
Though these two are on same physical network, but logically are on different LANs.
Now let's call these LAN-1 and LAN-2 respectively.
How can one computer on LAN-1 connect to other computer on LAN-2.
You have to provide routing from LAN-1 to LAN-2 for interconnecting 2 networks.
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This shows a network of 3 workstations and a router. below is the routing table of PC 1
If PC1 sends a packet to PC 2. How would it get to the destination?
As I have understood PC1 would refer its routing table, and broadcast the packet.For that which entry in the routing table would it make use of?
It's the third entry in your routing table: 172.16.18.0/24 is routed through 172.16.18.1 which is local network interface. Thus the OS knows that packets to this network should be delivered through this interface.
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Can anyone explain how announcing in BGP works? I understand BGP finds the shortest/lowest-cost path to a destination network, but I also read somewhere that it announces these paths. Is that true, and how exactly does it announce a route?
BGP is Exterior Gateway Protocol and it is used in the network Borders between Autonomous systems , announcing network work like this example :
for example we have 3 Autonomous systems A,B
A have those tow networks 1.1.1.0/24 and 2.2.2.0/24
B have those tow network 3.3.3.0/24 and 4.4.4.0/24
so Edge router in A directly connected to Edge router in B and running BGP , every router announce (or advertise) which internal networks it have ( or want to publish) so now A routers know that there is 3.3.3.0/24 and 4.4.4.0/24 networks and they are reachable via Edge router of B and same with B networks
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MAC address are used for uniquely identifying my computer.
IP address are used for routing the packets to the network, as it has got a hierarchial structure, but it doesn't uniquely identifies a computer. So, after IPv6, each computer will have a unique IP address, so will there be any need of MAC address then?
Please do correct me, if I had understood something wrong.
No. MAC addresses operate at layer 2 ("data link layer"). The Internet Protocol (both IPv4 and IPv6) operates at layer 3 ("network layer").
These two layers are complimentary, and do not "replace" each other. For more information, read up on the TCP/IP suite.
IPv6 stateless address autoconfiguration (SLAAC) uses the MAC address to generate the address, but that does not mean they "replace" each other. It's simply a characteristic of the layer 2 interface being inherited by the layer 3 addressing. Other than that, completely complimentary.
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I need to connect two wired devices using wifi, since I cannot connect them directly with a wire. So on the first side I placed an access point that does also wifi and acts as a dhcp server, and the first appliance is wired connected. On the other side I guess I need at least a repeater, but that can output the signal received also to the wire. Is this possible? Which appliance do you suggest me to use?
You can use a wireless bridge or a wireless router running a custom firmware to turn it into a bridge (DD-WRT). Any cheap wireless router that supports DD-WRT or tomato will work. I've used one of these as a wireless bridge before.
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At my current place of employment, on my Windows box, when I do an ipconfig /all from my command prompt I see that I have both a static IP address as well as a dynamic IP address. Why could that be? I am trying to diagram our network structure for a new software project that I'm on...knowing the answer to this question could help out a lot.
You have multiple NICs and are multi-homed?
These are from different interfaces. You could be on a VPN, have a wireless connection, or have 2 network cards.
One possible reason is if you need to have multiple host names/IPs for a computer with a single NIC. See this link for more information. Personally I can't see why this would be necessary, but it seems that Windows does provide a means to do it anyways.