I86bilinuxl3adventerprisek91541tbin Better

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Step 2: Configure Interfaces (WAN and LAN)

Assuming GigabitEthernet0/0/0 is your WAN (Internet) and GigabitEthernet0/0/1 is your LAN. It seems like you've provided a string of

! WAN Interface (Connects to ISP)
interface GigabitEthernet0/0/0
 description LINK-TO-ISP
 ip address dhcp
 ip nat outside
 negotiation auto
 no shutdown
 exit
! LAN Interface (Connects to Switch/LAN)
interface GigabitEthernet0/0/1
description INTERNAL-LAN
ip address 192.168.1.1 255.255.255.0
ip nat inside
negotiation auto
no shutdown
exit
 Step 3: Performance Metrics

Step 3: Performance Metrics

• CPU idle percentage in show process cpu
• Drops in show interface
• Convergence time after link flapping (debug ip routing)

New features in 15.4(1)T:

• Improved MPLS support – MPLS LDP IPv6, MPLS OAM
• Enhanced routing – BGP Additional Paths (Add-Path)
• Security – IKEv2 improvements, SHA-2 hashing for IPsec
• Management – NETCONF, REST API support (rudimentary)
• DHCPv6 Prefix Delegation

4. What Does “Better” Mean for an IOS Image?

“Better” is subjective. To determine if one image is better than another, you must consider multiple axes: