BASIC COMMAND OF ROUTER
User Mode--Router>Enable(En)
Previllage Mode-Router#Conf t,show,copy,ping,Telnet
Global mode-Router(conf)#hostname R1
Router>En
Router#conf t
Router(config)hostnameR1
R1(config)#
R1(config)#int f0/0
R1(config)#ip add 10.0.0.1 255.0.0.0
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#int s0//0/0
R1(config)#ip add 20.0.0.1 255.0.0.0
R1(config-if)#clockrate 64000
R1(config)#no shutdown
STATIC ROUTING
R1(conf)#i route<Destination N/W><subnet Mask><first hop>
R1(conf)#ip route 30.0.0.0255.0.0.0 20.0.0.2
#ip route 40.0.0.0 255.0.0.0 20.0.0.2
#ip route 50.0.0.0 255.0.0.0 20.0.0.2
R2(conf)#ip route 10.0.0.0 255.0.0.0 20.0.0.1
# ip route 50.0.0.0 255.0.0.0 40.0.0.2
R3(conf)#ip route 30.0.0.0 255.0.0.0 40.0.0.1
# ip route 20.0.0.0 255.0.0.0 40.0.0.1
# ip rote 10.0.0.0 255.0.0.0 40.0.0.1
RIP---
#It does periodic update after some time(sec) it will details to neighbouring router RIP perform conversions in 30sec.
#It uses the hop matrices and determines the path with the least number of hopes to send the pockets.
#It is open standard routing protocol,RIP limits the number of hops to 15 to transfer the packet 16th hop becomes an unreachable destination.
RIP TIMER--
#Router Update Timer:-Time interval(Default-30Sec)to the router for sending its routing information.
#Router Invalid Timer:-Period after which router declare a route as invalid.This happen when router does not any updates from the route for certain period.(value 180 sec)
#Holddown Timer:-It is a Period for which the routing information is not passed to the neighboring router.The timer time is 180 sec.
#Router Flash Timer:-Routing information removed from the routing table that time is 240sec.
IGRP(INTERIOR GATEWAY ROUTING PROTOCOL)
1-Hop count limit of 255.
2-No periodic update,triggered update.
3-It uses Autonomous system number.it is number from(1-65536)
4-It is CISCO propitiatory routing protocol.
EIGRP(ENHANCE INTERIOR GATEWAY ROUTING PROTOCOL)
1-Hop count of 255(100 but can extend upto 255)
2-No periodic update.
3-It uses Autonomous system Number,It is number from(1-65536)
4-It is a CISCO propitiatory routing protocol.
ADMINISTRATIVE VALUE(AD VALUE)
#It is a truthful value from 0 TO 255.It is assigned to every routing protocol according to the performance.
#Lower AD value,Performance of reliability of routing protocol is more.
#If two protocols are used and both having same AD value,then the Router uses metrices.
MATRICES-It is calculation done(Hop count bandwidth,cost,Delay,Load of Reliability) by every routing protocol to find shortest path to the destination.If AD value and Matrices both are same for both the protocols then the router sends equal count of pocket the connected link.This is termed as load balancing.
DYNAMIC ROUTING-Dynamic Routing protocol finds the best on the basis of matrices
OSPF(OPEN SPACE ROUTING PROTOCOL)
#Open space routing protocol No limits on number of routers.
1-It is open standard routing protocol implemented on a wide variety of network vendors including CISCO.
2-For Non CISCO Router we cannot use EIGRP,So we have two options(RIP1 & RIP2) and OSPF.
3-Consist of areas and Autonomous.
4-Minimize routing update.
5-Allows escalability.
6-Supports VLSM/CIDR
7-Has unlimited Hop count.
OSPF must have an equal 0 and all other areas should be connected to he area.
Router that connect other areas to the backbone areas within an Autonomous Number(AS) are called Area Border Router.
Previllage Mode-Router#Conf t,show,copy,ping,Telnet
Global mode-Router(conf)#hostname R1
Router>En
Router#conf t
Router(config)hostnameR1
R1(config)#
R1(config)#int f0/0
R1(config)#ip add 10.0.0.1 255.0.0.0
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#int s0//0/0
R1(config)#ip add 20.0.0.1 255.0.0.0
R1(config-if)#clockrate 64000
R1(config)#no shutdown
STATIC ROUTING
R1(conf)#i route<Destination N/W><subnet Mask><first hop>
R1(conf)#ip route 30.0.0.0255.0.0.0 20.0.0.2
#ip route 40.0.0.0 255.0.0.0 20.0.0.2
#ip route 50.0.0.0 255.0.0.0 20.0.0.2
R2(conf)#ip route 10.0.0.0 255.0.0.0 20.0.0.1
# ip route 50.0.0.0 255.0.0.0 40.0.0.2
R3(conf)#ip route 30.0.0.0 255.0.0.0 40.0.0.1
# ip route 20.0.0.0 255.0.0.0 40.0.0.1
# ip rote 10.0.0.0 255.0.0.0 40.0.0.1
RIP---
#It does periodic update after some time(sec) it will details to neighbouring router RIP perform conversions in 30sec.
#It uses the hop matrices and determines the path with the least number of hopes to send the pockets.
#It is open standard routing protocol,RIP limits the number of hops to 15 to transfer the packet 16th hop becomes an unreachable destination.
RIP TIMER--
#Router Update Timer:-Time interval(Default-30Sec)to the router for sending its routing information.
#Router Invalid Timer:-Period after which router declare a route as invalid.This happen when router does not any updates from the route for certain period.(value 180 sec)
#Holddown Timer:-It is a Period for which the routing information is not passed to the neighboring router.The timer time is 180 sec.
#Router Flash Timer:-Routing information removed from the routing table that time is 240sec.
IGRP(INTERIOR GATEWAY ROUTING PROTOCOL)
1-Hop count limit of 255.
2-No periodic update,triggered update.
3-It uses Autonomous system number.it is number from(1-65536)
4-It is CISCO propitiatory routing protocol.
EIGRP(ENHANCE INTERIOR GATEWAY ROUTING PROTOCOL)
1-Hop count of 255(100 but can extend upto 255)
2-No periodic update.
3-It uses Autonomous system Number,It is number from(1-65536)
4-It is a CISCO propitiatory routing protocol.
ADMINISTRATIVE VALUE(AD VALUE)
#It is a truthful value from 0 TO 255.It is assigned to every routing protocol according to the performance.
#Lower AD value,Performance of reliability of routing protocol is more.
#If two protocols are used and both having same AD value,then the Router uses metrices.
MATRICES-It is calculation done(Hop count bandwidth,cost,Delay,Load of Reliability) by every routing protocol to find shortest path to the destination.If AD value and Matrices both are same for both the protocols then the router sends equal count of pocket the connected link.This is termed as load balancing.
DYNAMIC ROUTING-Dynamic Routing protocol finds the best on the basis of matrices
OSPF(OPEN SPACE ROUTING PROTOCOL)
#Open space routing protocol No limits on number of routers.
1-It is open standard routing protocol implemented on a wide variety of network vendors including CISCO.
2-For Non CISCO Router we cannot use EIGRP,So we have two options(RIP1 & RIP2) and OSPF.
3-Consist of areas and Autonomous.
4-Minimize routing update.
5-Allows escalability.
6-Supports VLSM/CIDR
7-Has unlimited Hop count.
OSPF must have an equal 0 and all other areas should be connected to he area.
Router that connect other areas to the backbone areas within an Autonomous Number(AS) are called Area Border Router.
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