Labs Sorted by BGP Attributes and Technologies

This page contains the alphabetical list of BGP attributes and technologies and the labs you can use to practice them:

Address families

• Configure BGP for IPv6
• EBGP Sessions over IPv6 LLA Interfaces

Advertising IP prefixes

• Advertise your IPv4 address space
• Configure BGP for IPv6
• Redistribute IGP Information Into BGP
• BGP route aggregation
• Advertise Default Route in BGP

AS and AS-path manipulation

• Use AS-Path Prepending to Influence Incoming Traffic Flow
• Reuse a BGP AS Number Across Multiple Sites (allowas-in)
• Fix AS-Path in Environments Reusing BGP AS Numbers (as-override)
• Use Multiple AS Numbers on the Same Router (local-as)
• Remove Private BGP AS Numbers from the AS Path (remove-private-as)

AS-path filters

• Prevent route leaking between upstream providers with an AS-path filter
• Use the backup link to reach the adjacent autonomous system.
• Stop the Propagation of Configuration Errors (challenge lab)

BFD (Bidirectional Forwarding Detection)

• Use BFD to Speed Up BGP Convergence

Communities

• Attach BGP Communities to Outgoing BGP Updates
• Use BGP Communities in Routing Policies
• Using No-Export Community to Filter Transit Routes
• BGP Graceful Shutdown (coming soon)

Default route

• Advertise Default Route in BGP
• Minimize the Forwarding Table on BGP Routers
• Implement Anycast Services with BGP (coming soon)

Dynamic BGP neighbors

• Implement Anycast Services with BGP (coming soon)

EBGP sessions

• Establish an EBGP session with an ISP
• Connect to two upstream providers
• EBGP Sessions over IPv6 LLA Interfaces
• Load Balancing across External BGP Paths
  • EBGP-Only Data Center Design (coming soon)

Forwarding Table

• Minimize the Forwarding Table on BGP Routers

GTSM (Generic TTL Security Mechanism)

• Use MD5 passwords and TTL-based session protection

IBGP sessions

• Establish an IBGP session between WAN edge routers
• Build a Transit Network with IBGP
• Use BGP Route Reflectors
• Use BGP Session Templates

Load balancing

• Load Balancing across External BGP Paths
• EBGP Load Balancing with BGP Link Bandwidth
  • IBGP Load Balancing with BGP Link Bandwidth

LOCAL_PREF (Local Preference)

• Implement a consistent AS-wide routing policy with BGP local preference.
• Use BGP Communities in Routing Policies
• Use the backup link to reach the adjacent autonomous system.
• BGP Graceful Shutdown (coming soon)

MD5 passwords

• Use MD5 passwords and TTL-based session protection

MPLS

• Implement BGP-Free Core in a Transit Network

MULTI_EXIT_DISC (Multi-Exit Discriminator, MED)

• Use MED to Influence Incoming Traffic Flow

Prefix filters

• Filter prefixes advertised by your autonomous system with a prefix list
• Minimize the size of your BGP table with inbound filters
• Use the backup link to reach the adjacent autonomous system.
• Limit the Number of Accepted BGP Prefixes
• Stop the Propagation of Configuration Errors (challenge lab)

Route reflectors

• Use BGP Route Reflectors

Scalability

• Use BGP Session Templates
• Use BGP Policy Templates

TCP-AO

Use TCP Authentication Option (TCP-AO)

TTL security

• Use MD5 passwords and TTL-based session protection

Weights

• Use BGP weights to prefer one of the upstream providers