وَمَا هَٰذِهِ ٱلْحَيَوٰةُ ٱلدُّنْيَآ إِلَّا لَهْوٌ وَلَعِبٌ ۚ وَإِنَّ ٱلدَّارَ ٱلْءَاخِرَةَ لَهِىَ ٱلْحَيَوَانُ ۚ لَوْ كَانُوا۟ يَعْلَمُونَ

“Dan tiadalah kehidupan dunia ini melainkan senda gurau dan main-main. Dan sesungguhnya akhirat itulah yang sebenarnya kehidupan, kalau mereka mengetahui.” (QS. Al-Ankabut:64)

Tuesday, 9 June 2020

Routing & Switching Essentials: Pertemuan 11-DHCP



Packet Tracer - Configuring DHCP Using Cisco IOS

Addressing Table

Device

Interface

IPv4 Address

Subnet Mask

Default Gateway

R1

G0/0

192.168.10.1

255.255.255.0

N/A

S0/0/0

10.1.1.1

255.255.255.252

N/A

R2

G0/0

192.168.20.1

255.255.255.0

N/A

G0/1

DHCP Assigned

DHCP Assigned

N/A

S0/0/0

10.1.1.2

255.255.255.252

N/A

S0/0/1

10.2.2.2

255.255.255.252

N/A

R3

G0/0

192.168.30.1

255.255.255.0

N/A

S0/0/1

10.2.2.1

255.255.255.0

N/A

PC1

NIC

DHCP Assigned

DHCP Assigned

DHCP Assigned

PC2

NIC

DHCP Assigned

DHCP Assigned

DHCP Assigned

DNS Server

NIC

192.168.20.254

255.255.255.0

192.168.20.1

Objectives

Part 1: Configure a Router as a DHCP Server

Part 2: Configure DHCP Relay

Part 3: Configure a Router as a DHCP Client

Part 4: Verify DHCP and Connectivity

Scenario

A dedicated DHCP server is scalable and relatively easy to manage, but can be costly to have one at every  location in a network. However, a Cisco router can be configured to provide DHCP services without the need for a dedicated server. Cisco routers use the Cisco IOS feature set, Easy IP, as an optional, full-featured DHCP server. Easy IP leases configurations for 24 hours by default. As the network technician for your company, you are tasked with configuring a Cisco router as a DHCP server to provide dynamic allocation of addresses to clients on the network. You are also required to configure the edge router as a DHCP client so that it receives an IP address from the ISP network.

Part 1:     Configure a Router as a DHCP Server

Step 1:     Configure the excluded IPv4 addresses.

Configure R2 to exclude the first 10 addresses from the R1 and R3 LANs. All other addresses should be available in the DHCP address pool.

Step 2:     Create a DHCP pool on R2 for the R1 LAN.

a.     Create a DHCP pool named R1-LAN (case-sensitive).

b.    Configure the DHCP pool to include the network address, the default gateway, and the IP address of the DNS server.

Step 3:     Create a DHCP pool on R2 for the R3 LAN.

a.      Create a DHCP pool named R3-LAN (case-sensitive).

b.    Configure the DHCP pool to include the network address, the default gateway, and the IP address of the DNS server.

Part 2:     Configure DHCP Relay

Step 1:     Configure R1 and R3 as a DHCP relay agent.

Step 2:     Set PC1 and PC2 to receive IP addressing information from DHCP.

Part 3:     Configure R2 as a DHCP Client

a.     Configure the Gigabit Ethernet 0/1 interface on R2 to receive IP addressing from DHCP and activate the interface.

Note: Use Packet Tracer’s Fast Forward Time feature to speed up the process or wait until R2 forms an EIGRP adjacency with the ISP router.

b.    Use the show ip interface brief command to verify that R2 received an IP address from DHCP.

Part 4:     Verify DHCP and Connectivity

Step 1:     Verify DHCP bindings.

R2# show ip dhcp binding

IP address       Client-ID/              Lease expiration        Type

                 Hardware address

192.168.10.11    0002.4AA5.1470           --                     Automatic

192.168.30.11    0004.9A97.2535           --                     Automatic

Step 2:     Verify configurations.

Verify that PC1 and PC2 can now ping each other and all other devices.


Penyelesaian:

Part 1: Configure a Router as a DHCP Server

Step 1: Configure the excluded IPv4 addresses.

Configure R2 to exclude the first 10 addresses from the R1 and R3 LANs. All other addresses should be available in the DHCP address pool.

R2(config)# ip dhcp excluded-address 192.168.10.1 192.168.10.10

R2(config)# ip dhcp excluded-address 192.168.30.1 192.168.30.10

Step 2: Create a DHCP pool on R2 for the R1 LAN.

  1. Create a DHCP pool named R1-LAN (case-sensitive).
    • R2(config)# ip dhcp pool R1-LAN
  2. Configure the DHCP pool to include the network address, the default gateway, and the IP address of the DNS server.
    • R2(dhcp-config)# network 192.168.10.0 255.255.255.0
    • R2(dhcp-config)# default-router 192.168.10.1
    • R2(dhcp-config)# dns-server 192.168.20.254

Step 3: Create a DHCP pool on R2 for the R3 LAN.

  1. Create a DHCP pool named R3-LAN (case-sensitive).
    • R2(config)# ip dh pool R3-LAN
  2. Configure the DHCP pool to include the network address, the default gateway, and the IP address of the DNS server.
    • R2(dhcp-config)# network 192.168.30.0 255.255.255.0
    • R2(dhcp-config)# default-router 192.168.30.1
    • R2(dhcp-config)# dns-server 192.168.20.254

Part 2: Configure DHCP Relay

Step 1: Configure R1 and R3 as a DHCP relay agent.

!R1
R1(config)# interface g0/0
R1(config-if)# ip helper-address 10.1.1.2
!R3
R3(config)# interface g0/0
R3(config-if)# ip helper-address 10.2.2.2

Step 2: Set PC1 and PC2 to receive IP addressing information from DHCP.

Part 3: Configure R2 as a DHCP Client

  1. Step 1: Configure the Gigabit Ethernet 0/1 interface on R2 to receive IP addressing from DHCP and activate the interface.
    • R2(config)# interface g0/1
    • R2(config-if)# ip address dhcp
    • R2(config-if)# no shutdown
    • Note: Use Packet Tracer’s Fast Forward Time feature to speed up the process or wait until R2 forms an EIGRP adjacency with the ISP router.
  2. Use the show ip interface brief command to verify that R2 received an IP address from DHCP.

Part 4: Verify DHCP and Connectivity

Step 1: Verify DHCP bindings.

R2# show ip dhcp binding

IP address            Client-ID/                   Lease expiration                     Type                                                       Hardware address

192.168.10.11        0002.4AA5.1470               —                                 Automatic

192.168.30.11        0004.9A97.2535                —                                Automatic

Step 2: Verify configurations.

Verify that PC1 and PC2 can now ping each other and all other devices.

Download Packet Tracert Pertemuan 11-DHCP

0 komentar :

Post a comment