Ccna-2v7.0 Case Study -rev B- -

October 11, 2012

Ccna-2v7.0 Case Study -rev B- -

Here are some sample verification commands:

Because devices in different VLANs cannot natively communicate at Layer 2, a router or Layer 3 switch must route traffic between subnets. The standard CCNA 2 approach utilizes subinterfaces on a single physical router port.

! Exclude low-range addresses reserved for network infrastructure ip dhcp excluded-address 192.168.20.1 192.168.20.10 ! Define the Production lease infrastructure scope ip dhcp pool PROD_HOSTS network 192.168.20.0 255.255.255.0 default-router 192.168.20.1 dns-server 208.67.222.222 domain-name cis-co.local Use code with caution. ccna-2v7.0 case study -rev b-

And on R1 include the WAN and any HQ networks in OSPF area 0.

interface GigabitEthernet0/0 no shutdown ! interface GigabitEthernet0/0.10 encapsulation dot1Q 10 ip address 192.168.10.1 255.255.255.0 ! interface GigabitEthernet0/0.20 encapsulation dot1Q 20 ip address 192.168.20.1 255.255.255.0 ! interface GigabitEthernet0/0.30 encapsulation dot1Q 30 ip address 192.168.30.1 255.255.255.0 Here are some sample verification commands: Because devices

The engineering foundation of the case study relies on dividing a large allocated network block (e.g., a /23 summary block like 172.25.64.0/23 ) into functional variable-length subnet masks (VLSM) to accommodate distinct department requirements across local and acquired offices. IPv4 Subnetting and Interface Allocation

Configure (Link Aggregation) to increase bandwidth and provide redundancy between switches. 3. Routing Concepts and Configuration Courses and training - PJATK GDAŃSK interface GigabitEthernet0/0 no shutdown

A core component of Rev B is optimizing a given IPv4 block (such as 192.168.10.0 /24 or a private Class B block) using Variable Length Subnet Masking (VLSM). You must allocate subnets based on host requirements, typically arranged from largest to smallest: Subnet/VLAN Name Host Requirement Subnet Mask (CIDR) /26 General corporate users VLAN 20 - Engineering /27 High-bandwidth users VLAN 30 - Management /28 Network administrators VLAN 99 - Native /28 or /29 Untagged trunk traffic Point-to-Point WAN /30 Router-to-Router links 2. Switching & Layer 2 Infrastructure

: Allocates a highly restrictive mask to isolate network management interfaces.

This case study challenges students to build, configure, and secure a multi-site infrastructure from scratch. The blueprint spans critical disciplines: IP subnetting, VLAN management, inter-VLAN routing, Layer 2 security, dynamic host allocation, wireless operations, and loop mitigation. Phase I: IP Addressing and VLAN Design

Dual-homed links or redundant pathways to prevent single points of failure.