Upload
rosemary-melton
View
223
Download
0
Embed Size (px)
Citation preview
Static Route
Identify Default gatewayWhat is the default
gateway for PC1PC2r1r2
PC1 PC2
Routing TableWhen all the
connecting interfaces are ‘up’, the routing table :
C 192.168.100.0C 192.168.10.1C 192.168.200.1
C – connected networks
Static routeNeeds three parametersDestination network Subnet mask default gateway address
ROUTER(CONFIG)# ip route <destination network > <subnet mask> <default-gateway address>
Example:ip route 192.168.100.0 255.255.255.0 192.168.20.1
Static route
R1 does not know about Fa0/0 network R2 does not know about Fa0/1 network Static routes is set up to inform these routes
R1(config)# ip route 192.168.10.0 255.255.255.0 192.168.200.1
R2(config)# ip route 192.168.100.0 255.255.255.0 192.168.200.2
Default Static Route
Default route is to any destination, any subnet mask thru a gateway
Default Route at R2R2(config)# ip route 0.0.0.0 0.0.0.0 200.1.2.2
Internet
200.1.2.2/30.
IP Address Wastage How many addresses
are wasted on192.168.102.0/24
network? 254-20 = 234192.168.100.0/24
network?254-2 = 252 192.168.101.0/24
network?254-55 = 199
20 Hosts
55 Hosts
Solution – IP Address Wastage Subnetting IP address space
Borrow bits from host address space to create subnetworks
Example: Class C address – 192.168.100.0/24
Borrow from last byte 192.168.100.0/24
Next Week
Subnetting IP address Space