5.4 Troubleshoot client- and router-based DHCP connectivity issues

In order for PC-1 to to obtain a DHCP lease from R1 there needs to be L3 connectivity from PC-1 to R1. Therefore the following needs to happen: R1 needs to be aware of the PC-1 subnet (I used RIPv2) R2 needs to be configured as a DHCP relay for the g1/0 interface R1 needs …

5.7 Configure and verify NTP operating in a client/server mode

Having accurate time on interconnected devices is essential for troubleshooting, security and general sanity. Differences in time between machines even if small can lead to increased difficulty in troubleshooting. Having accurate and synchronized time on all devices should be part of the basic setup of networking devices. In this lab I used a real NTP …

5.6 Configure, verify, and troubleshoot inside source NAT c.PAT

PAT is the same as dynamic nat (Pool). Except there is the “overload” command added. R1 config: ! ip dhcp excluded-address 10.0.0.100 10.0.0.254 ! ip dhcp pool vlan100 network 10.0.100.0 255.255.255.0 default-router 10.0.100.100 dns-server 10.0.100.100 ! ip dhcp pool vlan200 network 10.0.200.0 255.255.255.0 default-router 10.0.200.100 dns-server 10.0.200.100 ! interface FastEthernet0/0 no ip address duplex half …

5.6.b Configure, verify, and troubleshoot inside source NAT

IP NAT POOL configuration: R1 config: ! ! ip dhcp excluded-address 10.0.0.100 10.0.0.254 ! ip dhcp pool vlan100 network 10.0.100.0 255.255.255.0 default-router 10.0.100.100 dns-server 10.0.100.100 ! ip dhcp pool vlan200 network 10.0.200.0 255.255.255.0 default-router 10.0.200.100 dns-server 10.0.200.100 ! ! interface FastEthernet0/0 no ip address duplex half ! interface FastEthernet0/0.1 encapsulation dot1Q 1 native ip address …

5.6 Configure, verify, and troubleshoot inside source NAT

I am starting to see why I failed now. There are too many subjects to review and I only really reviewed the 200-105 book. But the 200-125 exam takes parts from both books. The NAT part of the exam (see title) is only covered in the first book (100-105). Next time I would probably take …