Posts

Showing posts from January, 2022

Simple network architecture in bangladesh isp and iig project

 coming soon

EGP vs IGP compleate project

IPV6 Static route /tunnnel on ipv4

SNMP v3

Tunnel side to side vpn gre tunnel

 coming soon 

HSRP/grrp

Image
HSRP configuration on R1 R!(config)# hostname R1 R1(config)#interface gigabitEthernet 0/0 R1(config-if)#ip address 192.168.0.2 255.255.255.0 R1(config-if)#standby 1 ip 192.168.0.1 R1(config-if)#standby version 2 R1(config-if)#standby preempt R1(config-if)#standby priority 100 HSRP configuration on R2 Router>ena Router#configure Router(config)#interface gigabitEthernet 0/0 Router(config-if)#ip address 192.168.0.3 255.255.255.0 R2(config-if)#standby 1 ip 192.168.0.1 R2(config-if)#standby version 2 R2(config-if)#standby preempt R2(config-if)#standby priority 120 GRRP configuration packet tracer not supported  i want to configuration gns3 then configuration grrp

NAT/PAT

ACL

simple bgp configuration

Dynamic Routing OSPF

Image
Router 1 OSPF configuration area 0 : R1# R1#confi R1#configure R1(config)#router ospf 100 R1(config-router)#network 192.168.0.0 ? R1(config-router)#network 192.168.0.0 0.0.0.255 area 0 R1(config-router)#network 192.168.1.0 0.0.0.255 area 0 R1(config-router)#network 192.168.2.0 0.0.0.255 area 0 R1(config-router)#network 10.10.10.0 0.0.0.255 area 0 R1(config-router)#ext Router 2 OSPF configuration area 0 : R2(config)#router ospf 200 R2(config-router)#network 192.168.186.0 0.0.0.255 area 0 R2(config-router)#network 10.10.10.0 0.0.0.3 area 0 Router 3  OSPF configuration area 1 :

EIGRP

Image
  Router 1 interface configuration: Router>enable Router#configure terminal Router(config)#hostname R1 R1(config)#interface gigabitEthernet 0/1 R1(config-if)#no shutdown R1(config-if)#ip address 10.10.10.2 255.255.255.252 Router 2 interface configuration: Router>enable Router#configure terminal Router(config)#interface gigabitEthernet 0/0 Router(config-if)#no shutdown Router(config-if)#ip address 10.10.10.1 255.255.255.252 Router(config)#interface gigabitEthernet 0/1 Router(config-if)#no shutdown Router(config-if)#ip address 11.11.11.1 255.255.255.252 Router(config-if)#exit Router(config)#hostname r2 Router 3 interface configuration: Router> Router> enable Router#configure terminal Router(config)# Router(config)#interface gigabitEthernet 0/0 Router(config-if)#no shutdown  Router(config-if)#ip address 11.11.11.2 255.255.255.252 Router(config-if)#exit Router(config)#interface gigabitEthernet 0/1 Router(config-if)#no shutdown  Router(config-if)#ip addr...

Dynamic routing Rip/Rip v2

Image
  Router1 interface up: Router#configure terminal R1(config)#hostname R1 R1(config)#interface gigabitEthernet 0/1 R1(config-if)#no shutdown R1(config-if)#ip address 192.168.0.1 255.255.255.0 R1(config)#interface gigabitEthernet 0/0 R1(config-if)#no shutdown R1(config-if)#ip address 10.10.10.1 255.255.255.252 Router2 interface up: Router>ena Router#configure terminal  Router(config)#hostname R2 R2(config)#interface gigabitEthernet 0/0 R2(config-if)#no shutdown  R2(config-if)#ip address 10.10.10.2 255.255.255.252 R2(config-if)#exit R2(config)#interface gigabitEthernet 0/1 R2(config-if)#ip address 8.8.8.1 255.255.255.0 R2(config-if)#no shutdown  Router1 Rip configuration: R1(config)#router rip R1(config-router)#version 2 R1(config-router)#network 192.168.0.0 R1(config-router)#network 10.10.10.0 R1(config-router)#default-information originate Router2 Rip configuration: R2(config)#router rip  R2(config-router)#version 2 R2(config-router)#network 8.8.8.0 R2(confi...

static routing :- default /floating

Image
  Static Route Configuration Cisco : Router#configuration terminal Router(config)#ip route 192.168.2.0 255.255.255.0 11.11.11.1 Router(config)#ip route 192.168.1.0 255.255.255.0 11.11.11.1 Router(config)#ip route 192.168.0.0 255.255.255.0 11.11.11.1 Defult Route Configuration Cisco : Router(config)#ip route 0.0.0.0 0.0.0.0 11.11.11.1

inter vlan routing on cisco router and switch

Image
VLAN and IP Configuration on Cisco Router: Router(config)# Router(config)#interface gigabitEthernet 0/0.10 Router(config-subif)#encapsulation dot1Q 10 Router(config-subif)#ip address  192.168.0.1 255.255.255.0 Router(config-subif)#exit Router(config)#interface gigabitEthernet 0/0.20 Router(config-subif)#encapsulation dot1Q 20 Router(config-subif)#ip address 192.168.1.1 255.255.255.0 Router(config-subif)#exit Router(config-subif)#interface gigabitEthernet 0/0.30 Router(config-subif)#encapsulation dot1Q 30 Router(config-subif)#ip address 192.168.2.1 255.255.255.0 Router(config-subif)#exit Router(config)#exit Router# VLAN  Configuration on Cisco Switch: Switch>ena Switch#configure  Switch(config)# Switch(config)#hostname SW1 SW1(config)#vlan 10 SW1(config-vlan)#exit SW1(config)#vlan 20 SW1(config-vlan)#exit SW1(config)#vlan 30 SW1(config-vlan)#exit SW1(config)#interface gigabitEthernet 0/1 SW1(config-if)#switchport mode trunk...

VTP, ETHERCHANNEL, STP, PVST, RSTP, BPDU,ROOT Bright ,Portfast

Image
 VTP server configuration Switch(config)#vlan 100 Switch(config-vlan)#vlan 200 Switch(config-vlan)#vlan 444 Switch(config)# Switch(config)#interface fastEthernet 0/1 Switch(config-if)#switchport mode trunk Switch(config-if)#interface fastEthernet 0/2 Switch(config-if)#switchport mode trunk Switch(config)# Switch(config)#vtp mode server Switch(config)#vtp domain alamin.com Changing VTP domain name from NULL to alamin.com Switch(config)#vtp password 123 Setting device VLAN database password to 123 Switch(config)#vtp version 2 Switch(config)#hostname sw1 sw1(config)# VTP Client configuration: Switch(config)#hostname SW2 SW2(config)#interface fastEthernet 0/1 SW2(config-if)#switchport mode trunk SW2(config-if)#interface fastEthernet 0/2 SW2(config-if)#switchport mode trunk SW2(config)#vtp mode client SW2(config)#vtp password 123 SW2(config)#VTp DOmain alamin.com SW2(config)#vtp version 2 ETHERCHANNEL / PORTCHANNEL Configuration: sw1(config)# sw1(config)#interface range fastEt...

BACKUP/RESTORE-TFTP, SYSLOG, NTP, RADIUS/TRACKERS,

Image
BACKUP/RESTORE Cisco Devices: Fast we are backup download on our TFTP server Router#enable Router#copy running-config tftp: Address or name of remote host []? 8.8.8.8 Destination filename [Router-confg]? fast_backup Writing running-config...!! [OK - 963 bytes] 963 bytes copied in 0.035 secs (27514 bytes/sec)  we want to upload this backup on our existing router : Router#copy tftp: running-config Address or name of remote host []? 8.8.8.8 Source filename []? fast_backup Destination filename [running-config]? Accessing tftp://8.8.8.8/fast_backup... Loading fast_backup from 8.8.8.8: ! [OK - 963 bytes] 963 bytes copied in 0.001 secs (963000 bytes/sec) Router# %LINK-5-CHANGED: Interface GigabitEthernet0/0.50, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0.50, changed state to up %LINK-5-CHANGED: Interface GigabitEthernet0/0.60, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0.60, changed sta...

IPV6 Addressing

Image
 IPV6 Overview: Ipv6 is 128 bit. Ipv6 use Hexadesimal number.Ipv6 release date 6 June 2012.   This is ipv6 address example:      2001:0000:3238:DFE1:0063:0000:0000:FEFB IPV6 Addressing Mode: Unicast In the unicast mode of addressing, an IPv6 interface (host) is uniquely identified in a network segment. The IPv6 packet contains both source and destination IP addresses. A host interface is equipped with an IP address that is unique in that network segment. When a network switch or a router receives a unicast IP packet, destined to a single host, it sends out one of its outgoing interfaces which connect to that particular host. Multicast The IPv6 multicast mode is the same as that of IPv4. The packet destined to multiple hosts is sent to a special multicast address. All the hosts interested in that multicast information, need to join that multicast group first. All the interfaces that joined the group receive the multicast packet and process it, while other ho...

Cisco DHCP Configuration

Image
Cisco Router Dhcp configuration  Router#configure Router(config)#interface gigabitEthernet 0/0 Router(config-if)#no shutdown Router(config-if)#ip address 192.168.0.1 255.255.255.0 Router(config-if)#exit Router(config)#ip dhcp pool alamin Router(dhcp-config)#network 192.168.0.1 255.255.255.0 Router(dhcp-config)#dns-server 8.8.8.8 Router(dhcp-config)#default-router 192.168.0.1 Router(dhcp-config)#exit Router(config)#ip dhcp excluded-address 192.168.0.2 192.168.0.100 Cisco Router DHCP configuration on server  Router>enable Router#configure Router(config)#interface gigabitEthernet 0/1 Router(config-if)#ip address 2.2.2.1 255.255.255.0 Router#configure Router(config)#interface gigabitEthernet 0/0 Router(config-if)#no shutdown Router(config-if)#ip address 192.168.0.1 255.255.255.0 Router(config-if)#ip helper-address 2.2.2.2

VLAN

Image
Cisco router creates VLAN : R1>enable Password:123 R1#configure R1(config)# R1(config)#interface gigabitEthernet 0/1.100 R1(config-subif)#encapsulation dot1Q 100 R1(config-subif)#ip address 10.100.100.1 255.255.255.0 Cisco Switch creates VLAN : Switch#configure Switch(config)# Switch(config)#vlan 100 Switch# Cisco Switch creates Trunk VLAN : Switch#configure terminal Switch(config)#interface gigabitEthernet 0/1 Switch(config-if)#switchport mode trunk Switch(config-if)#exit Cisco Switch creates Access VLAN : Switch(config)# Switch(config)#interface gigabitEthernet 0/2 Switch(config-if)#switchport mode access Switch(config-if)#switchport access vlan 100 Cisco Switch creates Native VLAN : Switch#configure Switch(config)#interface fastEthernet 0/1 Switch(config-if)#switchport trunk native vlan 100  Switch(config-if)#description "kashem_pc" Switch(config-if)#exit

Basic cisco command

Image
  Router/Switch Privileged   mode  command : Router>enable Router/Switch global configuration mode command: Router# configuration terminal Router/Switch Device name change command : Router(config)#hostname R1 Router/Switch Device enable password set command : R1(config)#enable password 123 R1(config)#enable secret 321 Router/Switch password  encryp tion   command : R1(config)#service password-encryption  Router/Switch login banner set command  R1(config)#banner login C this is comments C Router/Switch telnet configuration command  R1#configure terminal  R1(config)#line vty 0 4 R1(config-line)#transport input telnet R1(config-line)#login local R1(config-line)#password 1234 R1(config-line)#exit R1(config)# Router/Switch SSH configuration command  R1(config)#ip domain-name alamin.com  <domain name save> R1(config)#crypto key generate rsa How many bits in the modulus [512]: 1024 R1(config)# R1(config)#line vty 0 4 R1(confi...