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RUCKUS FastIron Layer 3 Routing Configuration Guide, 10.0.20

Provides step-by-step instructions to help you understand and configure Layer 3 technology features for the current release of FastIron OS. Organized by technology, for example, Routing Information Protocol (RIP), and Open Shortest Path First (OSPF).

1 CommScope Legal Statements
Preface Ruckus
- 3 Contact Information, Resources, and Conventions
  - 3.1 Contacting RUCKUS Customer Services and Support
  - 3.2 Document Feedback
  - 3.3 RUCKUS Product Documentation Resources
  - 3.4 Online Training Resources
  - 3.5 Document Conventions
  - 3.6 Command Syntax Conventions
4 About This Document
- 4.1 New in This Document
- 4.2 Supported Hardware
ARP
- 5 Address Resolution Protocol
  - 5.1 ARP Parameter Configuration
    - 5.1.1 How ARP Works
    - 5.1.2 Rate limiting ARP Packets
    - 5.1.3 ARP Aging
    - 5.1.4 Configuring Global ARP Aging
    - 5.1.5 Configuring the ARP Aging on a Specific Interface
    - 5.1.6 Changing the Maximum Number of ARP Table Entries
    - 5.1.7 Enabling Proxy ARP Globally
    - 5.1.8 Enabling Proxy ARP on an Interface
    - 5.1.9 Disabling Proxy ARP on an Interface
    - 5.1.10 Static ARP
    - 5.1.11 Creating Static ARP Entries
    - 5.1.12 Changing the Maximum Number of Static ARP Table Entries
    - 5.1.13 Enabling Learning Gratuitous ARP
    - 5.1.14 Disabling Next Hop or ARP Port Movement Syslog Message Generation
    - 5.1.15 ARP Packet Validation
    - 5.1.16 Ingress ARP Packet Priority
      - 5.1.16.1 Configuring the Priority of Ingress ARP Packets
  - 5.2 Displaying the ARP Table
  - 5.3 Reverse Address Resolution Protocol Configuration
    - 5.3.1 How RARP Differs from BootP and DHCP
    - 5.3.2 Disabling RARP
    - 5.3.3 Creating Static RARP Entries
    - 5.3.4 Changing the Maximum Number of Static RARP Entries Supported
  - 5.4 Dynamic ARP Inspection Overview
    - 5.4.1 ARP Poisoning
    - 5.4.2 How Dynamic ARP Inspection Works
      - 5.4.2.1 ARP and DHCP Snoop Entries
    - 5.4.3 Configuration Notes and Feature Limitations for DAI
    - 5.4.4 Configuring Dynamic ARP Inspection
      - 5.4.4.1 Configuring an Inspection ARP Entry
      - 5.4.4.2 Enabling DAI on a VLAN
      - 5.4.4.3 Enabling ARP Inspection Trust on a Port
      - 5.4.4.4 Disabling Syslog Messages for DAI
    - 5.4.5 Multi-VRF Support for DAI
      - 5.4.5.1 Enabling ARP Inspection Trust on a Port for a Nondefault VRF
    - 5.4.6 Displaying ARP Inspection Status and Ports
  - 5.5 ARP Suppression for BGP EVPN Overview
    - 5.5.1 ARP Suppression for BGP EVPN Overview
    - 5.5.2 Configuring ARP Suppression for BGP EVPN
6 IP Addressing
- 6.1 IP Addressing Overview
  - 6.1.1 IP interfaces
  - 6.1.2 IP Route Table
  - 6.1.3 ACLs and IP Access Policies to Filter IP Traffic
  - 6.1.4 IP Packet Flow Through a Layer 3 Device
    - 6.1.4.1 IP Forwarding Cache
    - 6.1.4.2 Layer 4 Session Table
  - 6.1.5 Encapsulation Type and MTU Packet Parameters
- 6.2 Basic IP Configuration
- 6.3 Assigning an IP Address to a Loopback Interface
- 6.4 Assigning an IPv4 Address to an Ethernet Port
- 6.5 Assigning an IP Address to a Virtual Ethernet Interface
- 6.6 Domain Name System
  - 6.6.1 Configuring DNS
- 6.7 ICMP
  - 6.7.1 Disabling ICMP Messages
  - 6.7.2 Enabling ICMP Redirect Messages
- 6.8 ICMP Router Discovery Protocol Configuration
  - 6.8.1 Enabling IRDP
- 6.9 Configuring IP Follow on a Virtual Routing Interface
- 6.10 IP Address Replacement
  - 6.10.1 Replacing an IP Address
- 6.11 Changing Packet Encapsulation Type and MTU
- 6.12 IPv4 Point-to-Point GRE Tunnels
  - 6.12.1 GRE Tunnel Parameters
  - 6.12.2 Path MTU Discovery Support
  - 6.12.3 Support for IPv4 Multicast Routing Over GRE Tunnels
  - 6.12.4 Configuring IP GRE Tunnels
  - 6.12.5 Configuring Optional IP GRE Tunnel Parameters
  - 6.12.6 Configuring Path MTU Discovery on a GRE Tunnel
  - 6.12.7 Enabling IPv4 Multicast Routing Over a GRE Tunnel
  - 6.12.8 Assigning a VRF Routing Instance to a GRE Tunnel Interface
  - 6.12.9 Deleting an IP Address from an Interface Configured as a Tunnel Source
  - 6.12.10 Example Point-to-Point GRE Tunnel Configuration
    - 6.12.10.1 Configuring Point-to-Point GRE Tunnel for Router A
    - 6.12.10.2 Configuring Point-to-Point GRE Tunnel for Router B
  - 6.12.11 Displaying GRE Tunneling Information
  - 6.12.12 Clearing GRE Statistics
- 6.13 Bandwidth for IP Interfaces
  - 6.13.1 OSPF Cost Calculation with Interface Bandwidth
  - 6.13.2 Setting the Bandwidth Value for an Ethernet Interface
  - 6.13.3 Setting the Bandwidth Value for a VE Interface
  - 6.13.4 Setting the Bandwidth Value for a Tunnel Interface
- 6.14 User-configurable MAC address per IP interface
  - 6.14.1 Manually Configuring an IP MAC Address
- 6.15 Modifying and Displaying Layer 3 System Parameter Limits
- 6.16 Changing the Router ID
- 6.17 Configuring IP Forwarding Parameters
- 6.18 Configuring a Default Network Route
- 6.19 IP Load Sharing
  - 6.19.1 Changing the Number of Load Sharing (ECMP) Paths for IPv4
- 6.20 Configuring IPv4 Option Type Filters
- 6.21 31-Bit Subnet Masks on Point-to-Point Networks
  - 6.21.1 Assigning a 31-Bit Subnet Mask to an IPv4 Address
  - 6.21.2 Configuration Example for 31-Bit Subnet Mask Configuration
- 6.22 UDP broadcast and IP helper
  - 6.22.1 Enabling UDP Application Forwarding
  - 6.22.2 Configuring an IP helper address
- 6.23 Enabling or Disabling Layer 2 Switching
- 6.24 Configuring Delay Time for Notifying VE Down Event
  - 6.24.1 Configuring VE down time notification
- 6.25 Specifying a Single Source Interface for Specified Packet Types
- 6.26 Displaying IP Configuration Information
- 6.28 Clearing IP routes
- 6.29 Displaying IP Traffic Statistics
7 IPv6 Addressing
- 7.1 IPv6 Addressing Overview
  - 7.1.1 IPv6 Address Types
  - 7.1.2 IPv6 Stateless Auto-Configuration
- 7.2 Full Layer 3 IPv6 Feature Support
- 7.3 IPv6 CLI Command Support
- 7.4 Configuring the Management Port for an IPv6 Automatic Address Configuration
- 7.5 Configuring Basic IPv6 Connectivity on a Layer 3 Switch
  - 7.5.1 Enabling IPv6 routing
  - 7.5.2 IPv6 Configuration on Each Router Interface
    - 7.5.2.1 Configuring a Global or Site-Local IPv6 Address on an Interface
    - 7.5.2.2 Enabling IPv6 on an Interface
    - 7.5.2.3 Configuring a link-local IPv6 address on an Interface
    - 7.5.2.4 Configuring an IPv6 anycast address on an interface
  - 7.5.3 Dual Stacking for IPv4 and IPv6
- 7.6 IPv6 Over IPv4 Tunnels
  - 7.6.1 IPv6 over IPv4 Tunnel Configuration Notes
  - 7.6.2 Configuring a Manual IPv6 Over IPv4 Tunnel
  - 7.6.3 Clearing IPv6 Tunnel Statistics
  - 7.6.4 Displaying IPv6 Tunnel Information
- 7.7 IPv6 Management
  - 7.7.1 Configuring IPv6 Management ACLs
  - 7.7.2 Restricting SNMP access to an IPv6 node
  - 7.7.3 Specifying an IPv6 SNMP trap receiver
  - 7.7.4 Configuring SNMP V3 Over IPv6
  - 7.7.5 Secure Shell, SCP, and IPv6
  - 7.7.6 IPv6 Telnet
    - 7.7.6.1 Establishing a Telnet Session from an IPv6 Host
  - 7.7.7 IPv6 traceroute
  - 7.7.8 IPv6 Web Management Using HTTP and HTTPS
  - 7.7.9 Restricting Web Management Access
  - 7.7.10 Configuring Name-to-IPv6 Address Resolution Using IPv6 DNS Resolver
  - 7.7.11 Defining an IPv6 DNS Entry
  - 7.7.12 Pinging an IPv6 address
  - 7.7.13 Configuring an IPv6 Syslog Server
  - 7.7.14 Viewing IPv6 SNMP server addresses
  - 7.7.15 Disabling router advertisement and solicitation messages
  - 7.7.16 Disabling IPv6 on a Layer 2 Switch
- 7.8 IPv6 ICMP Feature Configuration
  - 7.8.1 Enabling IPv6 ICMP Redirects and Configuring ICMP Rate-Limiting
- 7.9 IPv6 Neighbor Discovery Configuration
  - 7.9.1 IPv6 Neighbor Discovery Configuration Notes
  - 7.9.2 Neighbor Solicitation and Advertisement Messages
  - 7.9.3 Router advertisement and solicitation messages
  - 7.9.4 Neighbor redirect messages
  - 7.9.5 Duplicate Address Detection (DAD)
  - 7.9.6 IPv6 router advertisement parameters
  - 7.9.7 Prefixes Advertised in IPv6 Router Advertisement Messages
  - 7.9.8 Domain Name System Search List
    - 7.9.8.1 Configuring DNSSL
  - 7.9.9 Recursive DNS server addresses
    - 7.9.9.1 Configuring recursive DNS server addresses
  - 7.9.10 IPv6 address advertisement suppression
    - 7.9.10.1 Suppressing the advertisement of all configured IPv6 addresses
    - 7.9.10.2 Suppressing the advertisement of selected IPv6 addresses
  - 7.9.11 Flags in IPv6 Router Advertisement Messages
  - 7.9.12 Enabling and disabling IPv6 router advertisements
  - 7.9.13 IPv6 router advertisement preference support
    - 7.9.13.1 Configuring IPv6 RA Preference
  - 7.9.14 Configuring the Stale State Timeout for IPv6 Neighbors
  - 7.9.15 Configuring the Maximum Number of IPv6 Cache Entries
  - 7.9.16 Configuring the Maximum Number of IPv6 Neighbors
  - 7.9.17 Reachable time for remote IPv6 nodes
- 7.10 IPv6 Neighbor Discovery Proxy
  - 7.10.1 IPv6 ND Proxy
  - 7.10.2 Local ND Proxy
  - 7.10.3 Configuring IPv6 ND Proxy Globally
  - 7.10.4 Configuring Local ND Proxy on an interface
  - 7.10.5 Disabling IPv6 ND Proxy
- 7.11 IPv6 Neighbor Discovery Inspection
  - 7.11.1 Configuring Neighbor Discovery Inspection
  - 7.11.2 Configuring Neighbor Discovery Inspection on Multiple VLANs
  - 7.11.3 Syslog message for ND Inspection
- 7.12 IPv6 MTU
  - 7.12.1 Configuration Notes and Feature Limitations for IPv6 MTU
  - 7.12.2 Changing the IPv6 MTU
- 7.13 Configuring IPv6 Extension Header Option Type Filters
- 7.14 127-Bit Subnet Masks on Point-to-Point Networks
  - 7.14.1 Assigning a 127-bit subnet mask to an IPv6 address
- 7.15 Static Neighbor Entries Configuration
- 7.16 Limiting the number of hops an IPv6 packet can traverse
- 7.17 IPv6 source routing security enhancements
- 7.18 TCAM Space Configuration
  - 7.18.1 Allocating TCAM Space
- 7.19 Displaying IPv6 Global Information
- 7.20 Displaying the IPv6 Local Router Information
- 7.21 Clearing Global IPv6 Information
8 IPv4 Static Routing
9 IPv6 Static Routing
10 RIP
- 10.1 RIP Overview
  - 10.1.1 Overview of RIP Route Learning and Advertising Parameters
  - 10.1.2 Redistribution of Routes into RIP
    - 10.1.2.1 Using Prefix Lists and Route Maps to Filter RIP Routes
- 10.2 Enabling RIP and Configuring Global Parameters
- 10.3 Configuring RIP interfaces
- 10.4 Displaying RIP Information
11 RIPng
- 11.1 RIPng Overview
- 11.2 RIPng Configuration Overview
- 11.3 Enabling RIPng and Configuring Global Parameters
- 11.4 Enabling and configuring RIPng interfaces
- 11.5 Clearing RIPng Routes from the IPv6 Route Table
- 11.6 Displaying RIPng information
12 OSPFv2
- 12.1 OSPFv2 Overview
- 12.2 Autonomous System
- 12.3 OSPFv2 Components and Roles
- 12.4 Reduction of Equivalent AS External LSAs
- 12.5 Algorithm for AS External LSA Reduction
- 12.6 Maximum limit overload processing
- 12.7 Enabling OSPFv2
- 12.8 Backbone area
- 12.9 Assigning OSPFv2 Areas
- 12.10 Area range
  - 12.10.1 Assigning an area range
- 12.11 Area Types
- 12.12 Stub Area and Totally Stubby Area
  - 12.12.1 Disabling summary LSAs for a stub area
- 12.13 Not-So-Stubby Area (NSSA)
  - 12.13.1 Configuring an NSSA
  - 12.13.2 Configuring a Summary Address for the NSSA
- 12.14 Assigning Interfaces to an Area
- 12.15 Link State Advertisements
- 12.16 Configuring the Maximum Number of LSAs in the LSDB
- 12.17 Checking the LSDB Overflow State
- 12.18 Virtual Links
  - 12.18.1 Configuring virtual links
- 12.19 Default Route Origination
- 12.20 External route summarization
- 12.21 SPF timers
- 12.22 Modifying Shortest Path First timers
- 12.23 OSPFv2 administrative distance
- 12.24 OSPFv2 LSA refreshes
  - 12.24.1 Configuring the OSPFv2 LSA pacing interval
- 12.25 Disabling the Opaque LSA Capability
- 12.26 Support for OSPF RFC 2328 Appendix E
- 12.27 OSPFv2 Graceful Restart
  - 12.27.1 Disabling OSPFv2 Graceful Restart
  - 12.27.2 Re-enabling OSPFv2 Graceful Restart
  - 12.27.3 Disabling OSPFv2 graceful restart helper
- 12.28 OSPFv2 stub router advertisement
- 12.29 OSPFv2 Shortest Path First throttling
- 12.30 IETF RFC and Internet Draft Support
- 12.31 OSPFv2 non-stop routing
  - 12.31.1 Limitations of NSR
  - 12.31.2 Enabling OSPFv2 NSR
- 12.32 Synchronization of critical OSPFv2 elements
  - 12.32.1 Link state database synchronization
  - 12.32.2 LSA delayed acknowledging
  - 12.32.3 LSA syncing and packing
  - 12.32.4 Neighbor device synchronization
  - 12.32.5 Synchronization limitations
  - 12.32.6 Interface synchronization
- 12.33 Standby Module Operations
- 12.34 OSPFv2 distribute list
  - 12.34.1 Configuring an OSPFv2 Distribution List Using ACLs
  - 12.34.2 Configuring an OSPFv2 Distribution List Using Route Maps
- 12.35 OSPFv2 Route Redistribution
- 12.36 Redistributing routes into OSPFv2
- 12.37 Load Sharing
- 12.38 Interface types to which the reference bandwidth does not apply
- 12.39 Changing the Reference Bandwidth for the Cost on OSPFv2 Interfaces
- 12.40 OSPFv2 Over VRF
  - 12.40.1 Enabling OSPFv2 in a Non-default VRF
- 12.41 Configuring the OSPFv2 Max-Metric Router LSA
- 12.42 Re-enabling OSPFv2 compatibility with RFC 1583
- 12.43 OSPFv2 Authentication
  - 12.43.1 OSPFv2 Keychain Authentication
  - 12.43.2 OSPFv2 authentication configuration
    - 12.43.2.1 Configuring plain text authentication on an OSPFv2 interface
    - 12.43.2.2 Configuring Plain Text Authentication on an OSPFv2 Virtual Link
    - 12.43.2.3 Configuring MD5 authentication on an OSPFv2 interface
    - 12.43.2.4 Configuring MD5 Authentication on an OSPFv2 Virtual Link
    - 12.43.2.5 Configuring HMAC-SHA-1 or HMAC-SHA-256 authentication on an OSPFv2 interface
    - 12.43.2.6 Configuring HMAC-SHA-1 or HMAC-SHA-256 on an OSPFv2 Virtual Link
    - 12.43.2.7 Configuring keychain authentication on an OSPFv2 interface
    - 12.43.2.8 Configuring Keychain Authentication on an OSPFv2 Virtual Link
    - 12.43.2.9 Configuring authentication key activation wait time on an OSPFv2 interface
    - 12.43.2.10 Configuring Authentication Key Activation Wait Time on an OSPFv2 Virtual Link
    - 12.43.2.11 Displaying OSPFv2 Results
- 12.44 Changing Default Settings
- 12.45 Disabling and re-enabling OSPFv2 event logging
- 12.46 Understanding the effects of disabling OSPFv2
  - 12.46.1 Disabling OSPFv2
13 OSPFv3
- 13.1 OSPFv3 Overview
- 13.2 Configuring the router ID
- 13.3 Enabling OSPFv3
- 13.4 Configuring OSPFv3
- 13.5 OSPFv3 Areas
  - 13.5.1 Backbone area
  - 13.5.2 Area range
  - 13.5.3 Area types
  - 13.5.4 Assigning OSPFv3 Areas
  - 13.5.5 Assigning OSPFv3 areas to interfaces
  - 13.5.6 Stub Area and Totally Stubby Area
  - 13.5.7 Configuring a stub area
  - 13.5.8 Not-so-stubby area
  - 13.5.9 Configuring an NSSA
  - 13.5.10 LSA types for OSPFv3
- 13.6 Virtual Links
  - 13.6.1 Virtual link source address assignment
  - 13.6.2 Configuring virtual links
- 13.7 OSPFv3 route redistribution
  - 13.7.1 Redistributing routes into OSPFv3
- 13.8 Default route origination
  - 13.8.1 Configuring default external routes
- 13.9 Disabling and re-enabling OSPFv3 event logging
- 13.10 Filtering OSPFv3 Routes
  - 13.10.1 Configuring an OSPFv3 Distribution List Using an IPv6 Prefix List as Input
  - 13.10.2 Configuring an OSPFv3 Distribution List using a Route Map as input
- 13.11 SPF timers
  - 13.11.1 Modifying SPF timers
- 13.12 OSPFv3 administrative distance
  - 13.12.1 Configuring administrative distance based on route type
- 13.13 Changing the reference bandwidth for the cost on OSPFv3 interfaces
- 13.14 OSPFv3 LSA refreshes
  - 13.14.1 Configuring the OSPFv3 LSA pacing interval
- 13.15 External route summarization
- 13.16 OSPFv3 Over VRF
  - 13.16.1 Enabling OSPFv3 in a Non-default VRF
  - 13.16.2 Assigning OSPFv3 Areas in a Non-default VRF
- 13.17 Setting all OSPFv3 interfaces to the passive state
- 13.18 OSPFv3 Graceful Restart Helper
  - 13.18.1 Disabling OSPFv3 Graceful Restart Helper
  - 13.18.2 Re-enabling OSPFv3 graceful restart helper
- 13.19 OSPFv3 non-stop routing
  - 13.19.1 Enabling OSPFv3 NSR
- 13.20 Configuring the Maximum Number of LSAs in the LSDB for OSPFv3
- 13.21 Checking the LSDB Overflow State for OSPFv3
- 13.22 OSPFv3 Authentication
  - 13.22.1 OSPFv3 Authentication Trailer
    - 13.22.1.1 OSPFv3 Keychain Authentication
    - 13.22.1.2 OSPFv3 Authentication Trailer Configuration
      - 13.22.1.2.1 Configuring HMAC-SHA-1 or HMAC-SHA-256 Authentication on an OSPFv3 Interface
      - 13.22.1.2.2 Configuring HMAC-SHA-1 or HMAC-SHA-256 Authentication on an OSPFv3 Virtual Link
      - 13.22.1.2.3 Configuring HMAC-SHA-1 or HMAC-SHA-256 Authentication on an OSPFv3 Area
      - 13.22.1.2.4 Configuring keychain authentication on an OSPFv3 interface
      - 13.22.1.2.5 Configuring keychain authentication on an OSPFv3 virtual link
      - 13.22.1.2.6 Configuring Keychain Authentication on an OSPFv3 Area
      - 13.22.1.2.7 Configuring authentication key activation wait time on an OSPFv3 interface
      - 13.22.1.2.8 Configuring Authentication Key Activation Wait Time on an OSPFv3 Virtual Link
      - 13.22.1.2.9 Configuring RFC 6506 Authentication on an OSPFv3 Interface
      - 13.22.1.2.10 Configuring RFC 6506 Authentication on an OSPFv3 Virtual Link
      - 13.22.1.2.11 Displaying OSPFv3 Results
  - 13.22.2 IPsec for OSPFv3
    - 13.22.2.1 IPsec for OSPFv3 Configuration
    - 13.22.2.2 IPsec for OSPFv3 Considerations
    - 13.22.2.3 Configuring IPsec on an OSPFv3 area
    - 13.22.2.4 Configuring IPsec on an OSPFv3 interface
    - 13.22.2.5 Configuring IPsec on OSPFv3 Virtual Links
    - 13.22.2.6 Specifying the key rollover timer
    - 13.22.2.7 Clearing IPsec Statistics
- 13.23 Displaying OSPFv3 Results
BGP4_FI_NI_NOS_SLX
- 14 BGP4
  - 14.1 BGP4 Overview
  - 14.2 BGP4 Peering
  - 14.3 BGP4 Message Types
  - 14.4 BGP4 attributes
  - 14.5 BGP4 Best Path Selection Algorithm
  - 14.6 Implementation of BGP4
  - 14.7 Device ID
  - 14.8 BGP global mode
  - 14.9 Configuring a local AS number
  - 14.10 Neighbor configuration
    - 14.10.1 Configuring BGP4 neighbors
  - 14.11 Peer Groups
    - 14.11.1 Configuring BGP4 peer groups
  - 14.12 Advertising the default BGP4 route
  - 14.13 Four-byte AS numbers
  - 14.14 Cooperative BGP4 route filtering
  - 14.15 BGP4 Parameters
  - 14.16 Route Redistribution
    - 14.16.1 Redistributing routes into BGP4
  - 14.17 Advertised Networks
  - 14.18 Importing routes into BGP4
  - 14.19 Route reflection
    - 14.19.1 Configuring a cluster ID for a route reflector
    - 14.19.2 Configuring a route reflector client
  - 14.20 Route flap dampening
  - 14.21 Aggregating routes advertised to BGP neighbors
  - 14.22 Advertising the default BGP4 route
  - 14.23 Advertising the default BGP4 route to a specific neighbor
  - 14.24 Multipath load sharing
  - 14.25 Specifying the Weight Added to Received Routes
  - 14.26 Using the IPv4 Default Route as a Valid Next Hop for a BGP4 Route
  - 14.27 Adjusting defaults to improve routing performance
  - 14.28 Next-hop Recursion
    - 14.28.1 Enabling next-hop recursion
  - 14.29 Route Filtering
  - 14.30 BGP Regular Expression Pattern-Matching Characters
  - 14.31 Timers
  - 14.32 BGP4 outbound route filtering
    - 14.32.1 Configuring BGP4 outbound route filtering
    - 14.32.2 Enabling BGP4 Cooperative Route Filtering
  - 14.33 BGP4 Confederations
    - 14.33.1 Configuring BGP4 confederations
  - 14.34 BGP community and extended community
  - 14.35 BGP4 graceful restart
    - 14.35.1 Disabling BGP4 Graceful Restart
    - 14.35.2 Re-enabling BGP4 graceful restart in bgp global configuration mode
  - 14.36 Generalized TTL Security Mechanism support
    - 14.36.1 Configuring GTSM for BGP4
  - 14.37 Disabling the BGP AS_PATH Check Function
  - 14.38 Matching on a destination network
  - 14.39 Matching on a Next-Hop Device
  - 14.40 Route Map Continue Statement for BGP4 Routes
  - 14.41 BGP Keychain Authentication
  - 14.42 Clearing diagnostic buffers
  - 14.43 Displaying BGP4 Statistics
  - 14.44 Displaying BGP4 Neighbor Statistics
- 15 BGP L2VPN EVPN Address Family
16 BGP4+
- 16.1 BGP4+ overview
- 16.2 BGP global mode
- 16.3 IPv6 unicast address family
- 16.4 BGP4+ neighbors
  - 16.4.1 Configuring BGP4+ Neighbors Using Global IPv6 Addresses
  - 16.4.2 Configuring BGP4+ neighbors using link-local addresses
- 16.5 BGP4+ Peer Groups
  - 16.5.1 Configuring BGP4+ peer groups
  - 16.5.2 Configuring a peer group with IPv4 and IPv6 peers
- 16.6 Importing routes into BGP4+
- 16.7 Advertising the default BGP4+ route
- 16.8 Advertising the default BGP4+ route to a specific neighbor
- 16.9 Using the IPv6 Default Route as a Valid Next Hop for a BGP4+ Route
- 16.10 BGP4+ next hop recursion
  - 16.10.1 Enabling next-hop recursion
- 16.11 BGP4+ NLRIs and next hop attributes
- 16.12 BGP4+ route reflection
  - 16.12.1 Configuring a cluster ID for a route reflector
  - 16.12.2 Configuring a route reflector client
- 16.13 BGP4+ route aggregation
  - 16.13.1 Aggregating Routes Advertised to BGP Neighbors
- 16.14 BGP4+ multipath
  - 16.14.1 Enabling Load-Balancing Across Different Paths
- 16.15 Route maps
  - 16.15.1 Configuring a route map for BGP4+ prefixes
- 16.16 Redistributing prefixes into BGP4+
- 16.17 Redistributing routes into BGP4+
- 16.18 Specifying the weight added to BGP4+ received routes
- 16.19 BGP4+ outbound route filtering
  - 16.19.1 Configuring BGP4+ outbound route filtering
- 16.20 BGP4+ confederations
  - 16.20.1 Configuring BGP4+ confederations
- 16.21 BGP4+ extended community
  - 16.21.1 Defining a community ACL
  - 16.21.2 Applying a BGP extended community filter
- 16.22 BGP4+ graceful restart
  - 16.22.1 Disabling BGP4+ Graceful Restart
  - 16.22.2 Re-enabling BGP4+ graceful restart
- 16.23 Generalized TTL Security Mechanism support
  - 16.23.1 Configuring GTSM for BGP4+
- 16.24 Disabling the BGP AS_PATH Check Function
- 16.25 Displaying BGP4+ statistics
- 16.26 Displaying BGP4+ Neighbor Statistics
17 BFD
- 17.1 Bidirectional Forwarding Detection Overview
- 17.2 BFD Session States
- 17.3 BFD in a Stacking System
- 17.4 BFD High Availability Support
- 17.5 Micro-BFD
  - 17.5.1 Enabling Micro-BFD Globally
  - 17.5.2 Configuring Micro-BFD for the Member Links of a LAG Interface
  - 17.5.3 BFD Configuration on One LAG Member Port
- 17.6 BFD Session Configuration Where Next Hop is a VE Interface
- 17.7 BFD Session Configuration Where Next Hop is a LAG Interface
- 17.8 BFD Considerations and Limitations
- 17.9 Holdover Timer
- 17.10 BFD Support for OSPF
  - 17.10.1 Configuring BFD for OSPFv2 Globally
  - 17.10.2 Enabling BFD on an OSPFv2-Enabled Interface
  - 17.10.3 Configuring BFD for OSPFv3 Globally
  - 17.10.4 Enabling BFD on an OSPFv3-Enabled Interface
  - 17.10.5 Setting a BFD Session to Passive
  - 17.10.6 Disabling BFD for OSPF-enabled Interfaces
  - 17.10.7 Configuring BFD for OSPFv2 Globally in a Nondefault VRF Instance
  - 17.10.8 Configuring BFD for OSPFv3 Globally in a Nondefault VRF Instance
- 17.11 BFD Support for BGP
  - 17.11.1 Configuring BFD for BGP
  - 17.11.2 Configuring BFD for BGP for a Nondefault VRF Instance
  - 17.11.3 Enabling BFD Sessions for a BGP Neighbor
  - 17.11.4 Enabling BFD Sessions for a BGP Peer Group
  - 17.11.5 Enabling BFD Sessions for a BGP Neighbor for a Nondefault VRF Instance
  - 17.11.6 Setting a BFD Session as Passive
  - 17.11.7 Disabling a BFD Session for a BGP Neighbor
- 17.12 BFD for Static Routes
  - 17.12.1 Configuring BFD for an IP Static Route
  - 17.12.2 Configuring BFD for an IPv6 Static Route
- 17.13 BFD Configuration Examples
- 17.14 Displaying BFD Information
18 VRRPv2
- 18.1 VRRPv2 Overview
  - 18.1.1 VRRP Terminology
  - 18.1.2 VRRP Limitations on ICX Devices
  - 18.1.3 VRRP hold timer
  - 18.1.4 VRRP interval timers
  - 18.1.5 VRRP Authentication
  - 18.1.6 VRRP master device abdication to backup device
  - 18.1.7 ARP and VRRP control packets
- 18.2 Enabling an Owner VRRP Device
- 18.3 Enabling a Backup VRRP Device
- 18.4 Configuring simple text authentication on VRRP interfaces
- 18.5 Configuring MD5 authentication on VRRP interfaces
- 18.6 Abdicating VRRP master device status
- 18.7 Tracked ports and track priority with VRRP and VRRP-E
  - 18.7.1 Tracking ports and setting the VRRP priority
- 18.8 VRRP backup preemption
  - 18.8.1 Disabling VRRP backup preemption
- 18.9 Accept mode for backup VRRP devices
  - 18.9.1 Enabling Accept Mode on a Backup VRRP Device
- 18.10 Suppressing RIP route advertisements on VRRP backup devices
- 18.11 VRRP-Ev2 Overview
- 18.12 Enabling a VRRP-E Device
- 18.13 VRRP-E Load-Balancing Using Short-Path Forwarding
  - 18.13.1 Short-path forwarding with revert priority
  - 18.13.2 Configuring VRRP-E load-balancing using short-path forwarding
- 18.14 VRRP-E Hitless Upgrade
  - 18.14.1 Configuring VRRP-E hitless upgrade
- 18.15 VRRP-E slow start timer
  - 18.15.1 Configuring a VRRP-E slow-start timer
- 18.16 Configuration Example: ISSU Upgrade Using VRRP-E
- 18.17 Displaying VRRPv2 Information
- 18.18 Clearing VRRPv2 statistics
19 VRRPv3
- 19.1 VRRPv3 Overview
  - 19.1.1 VRRP Limitations on ICX Devices
- 19.2 Enabling an IPv6 VRRPv3 owner device
- 19.3 Enabling an IPv6 VRRPv3 Backup Device
- 19.4 Enabling an IPv4 VRRPv3 Owner Device
- 19.5 Enabling an IPv4 VRRPv3 Backup Device
- 19.6 Tracked ports and track priority with VRRP and VRRP-E
  - 19.6.1 Tracking ports and setting VRRP priority using VRRPv3
- 19.7 Accept mode for backup VRRP devices
  - 19.7.1 Enabling Accept Mode on a Backup VRRP Device
- 19.8 Alternate VRRPv2 checksum for VRRPv3 IPv4 sessions
  - 19.8.1 Enabling the VRRPv2 checksum computation method in a VRRPv3 IPv4 session
  - 19.8.2 Displaying alternate VRRPv2 checksum settings
- 19.9 Automatic Generation of a Virtual Link-local Address for VRRPv3
  - 19.9.1 Assigning an auto-generated link-local IPv6 address for a VRRPv3 cluster
- 19.10 Displaying VRRPv3 Statistics
- 19.11 Clearing VRRPv3 statistics
- 19.12 VRRP-Ev3 Overview
- 19.13 VRRP-E Load-Balancing Using Short-Path Forwarding
  - 19.13.1 Configuring IPv6 VRRP-E Load-balancing using Short-path Forwarding
- 19.14 Enabling an IPv6 VRRP-Ev3 Device
- 19.15 Displaying and Clearing VRRP-Ev3 Statistics
20 Multi-VRF
- 20.1 Multi-VRF Overview
- 20.2 VRF-related System-Max Values
- 20.3 Additional Features to Support Multi-VRF
- 20.4 Configuring Multi-VRF
  - 20.4.2 Creating VLANs as links on a tagged port for security
  - 20.4.3 Configuring a VRF Instance
  - 20.4.4 Starting a routing process for a VRF
  - 20.4.5 Assigning a Layer 3 interface to a VRF
  - 20.4.6 Assigning a Loopback Interface to a VRF
  - 20.4.7 Verifying a Multi-VRF Configuration
  - 20.4.8 Removing a VRF configuration
  - 20.4.9 Configuring static ARP for Multi-VRF
  - 20.4.10 Configuring Additional ARP Features for Multi-VRF
21 Unicast Reverse Path Forwarding

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