# CONFIGURATION ROUTING

# Router Configuration Reference

Routing Configuration

- **Static Routes**
    - Default routes (0.0.0.0/0)
    - Customer-specific static routes
    - Management and infrastructure routes
    - Route prioritization using administrative distance
- **OSPF (Open Shortest Path First)**
    - Area configuration (Backbone Area 0 and non-backbone areas)
    - Interface network types
    - Neighbor adjacency verification
    - Route summarization and redistribution
    - Cost metrics and authentication
- **BGP (Border Gateway Protocol)**
    - eBGP/iBGP neighbor configuration
    - Peer authentication (MD5 where applicable)
    - Prefix advertisement and acceptance
    - Local Preference, MED, AS Path manipulation
    - Route aggregation and route redistribution
    - Keepalive and Hold Timer configuration
    - Neighbor status monitoring

Subscriber Management

- **PPPoE Server**
    - PPPoE server instance configuration
    - Service Name configuration
    - PPP profile assignment
    - IP pool allocation
    - RADIUS authentication and accounting
    - Session limits
    - MTU/MRU optimization
    - Subscriber interface binding

IP Addressing

- **IP Point-to-Point (IP PTP)**
    - /30 and /31 point-to-point addressing
    - Backbone inter-router links
    - Aggregation-to-core connections
    - Router loopback interfaces
    - Gateway assignment and reachability validation

# Router Configuration Reference Part 2

Traffic Filtering & Security

- **Filters / Access Control**
    - Access Control Lists (ACLs)
    - Firewall filter rules
    - Source and destination filtering
    - Port-based traffic filtering
    - Anti-spoofing policies
    - ICMP control
    - Management access restrictions
    - Traffic protection against unauthorized access

Route Filtering & Policy Control

- Prefix Lists
- Route Maps / Routing Policies
- AS Path Filters
- Community-based routing policies
- Import and export route filters
- Bogon and private ASN filtering

Interface Configuration

- Physical Ethernet interfaces
- VLAN interfaces (802.1Q)
- Trunk and Access port configuration
- Interface descriptions and labeling
- MTU configuration
- Speed and duplex settings
- Interface monitoring

Infrastructure Services

- DNS configuration
- NTP synchronization
- SNMP monitoring
- Syslog remote logging
- SSH secure management access
- User account and privilege management

Change Management

- Configuration backup before deployment
- Configuration validation after implementation
- Documentation updates
- Rollback procedures
- Post-change monitoring and verification