Let’s look at a VLSM IP address assignment example involving the Class B network 130.20.0.0/16. Using a /20 mask produces 16 subnetworks, as shown in …
VLSM Address Assignment: Example 1 – Internet Protocol Version 4 (IPv4) Design
Certifications of Cisco 300-420
IPv4 Addressing Design – Internet Protocol Version 4 (IPv4) Design
This section covers IPv4 design topics that a CCNP candidate should be aware of. There is no perfect way to address a network, and each …
IP Telephony Networks – Internet Protocol Version 4 (IPv4) Design
You should reserve separate subnets for LANs using IP phones. IP phones are normally placed in a VLAN that is in a logical segment separate …
Performing Route Summarization – Internet Protocol Version 4 (IPv4) Design
As a network designer, you will want to allocate IPv4 address space to allow for route summarization. Large networks can grow quickly from 500 routes …
Private and Public IP Address and NAT Guidelines – Internet Protocol Version 4 (IPv4) Design
Use public IPv4 addresses on external-facing devices that require connectivity to the Internet and external organizations. Examples include the following: The following are some public/private …
Case Study: IP Address Subnet Allocation – Internet Protocol Version 4 (IPv4) Design
Consider a company that has users in several buildings in a campus network. Building A has four floors, and building B has two floors, with …
Address Assignment and Name Resolution – Internet Protocol Version 4 (IPv4) Design
Device network configuration parameters such as IP addresses, subnet masks, default gateways, and DNS server IP addresses can be assigned statically by an administrator or …
DHCP – Internet Protocol Version 4 (IPv4) Design
Dynamic Host Configuration Protocol (DHCP) provides a way to dynamically configure hosts on a network. Based on BOOTP, it is defined in RFC 2131 and …
DNS – Internet Protocol Version 4 (IPv4) Design
Domain Name System (DNS) is an Internet-based directory system that returns a destination IP address, given a domain name (such as www.cisco.com). DNS is a …
ARP – Internet Protocol Version 4 (IPv4) Design
When an IP host needs to send an IP packet over an Ethernet network, it needs to find out what 48-bit MAC physical address to …