Advance Configuration
BGP and Multicast depends directly on the core where as QOS and Security configuration can have impact on end-to-end connectivity IOS features are petty neutral.
Recommended practice would be to configure BGP and Multicast after core then IOS features and finally QOS and Security limiting the scope of troubleshooting should something go wrong.
• BGP peer session establishment
• BGP peer groups
• Troubleshooting neighbor relationship
• Authentication, fast-external-fallover, maximum-prefix
• Soft-reconfiguration
• Injecting routes into BGP
• Default routes, conditional injecting, backdoor routes
• Network and auto-summary commands
• Aggregating route prefix
• Conditional aggregate, suppressing and unsuppressing
• Suppressing inactive routes advertisements
• Conditional advertising BGP routes
• BGP route manipulation using attributes
• Local-preference, Weight, MED, Origin, community
• Using next-hop and filtering using As-path list
• BGP multi-path support
• Filtering BGP prefixes
• Using community-list, extended community list
• Route maps for filtering BGP traffic
• Prefix-list for BGP prefix
• ORF
• Configuring internal BGP features
• Confederation and Route-reflector
• Using MED for confederation, missing MED as worst path
• Route dampening and flapping
• IBGP Multipath load sharing
• Hiding local-As, private-As
• Regular expressions
» Multicast Routing
• Multicast addressing, IGMP, CGMP
• PIM sparse and dense mode
• Dense mode configuration and guidelines
• Sparse-mode implementation and RP election
• Sparse mode guidelines regarding Auto-RP and BSR
• IGMP profile, IGMP-limit and IGMP group-list
• Scoping through TTL and administrative distance
• RPF check and its importance
• Multicast rate-limit
» IOS IP services
• HSRP and VRRP
• Core dump
• SNMP and Logging
• RMON
• DHCP configuration and helper-address
• Forward-protocol and UDP
• IPv6 configuration
• IPv6 over frame-relay
• RIPng, OSPFv3
• Dual stack and Tunneling
• IP accounting
» QOS
• Legacy and MQC standards
• Classification
• Congestion management via queuing
• Congestion avoidance
• Policing and shaping
• Link efficiency
• LAN QOS for 3550 and 3560 catalyst
» Security
• Advance ACL (Dynamic, Reflexive, Time range)
• CBAC and IOS firewall filtering
• Checking Spoof, Smurf
• Denial of service attacks
• 802.1x authentication services
• Port security
• Unicast reverse path forwarding
• Nat