OpenFabric
OpenFabric, specified in draft-white-openfabric-06.txt, is a routing protocol derived from IS-IS, providing link-state routing with efficient flooding for topologies like spine-leaf networks.
FRR implements OpenFabric in a daemon called fabricd
Configuring fabricd
There are no fabricd specific options. Common options can be specified (Common Invocation Options) to fabricd. fabricd needs to acquire interface information from zebra in order to function. Therefore zebra must be running before invoking fabricd. Also, if zebra is restarted then fabricd must be too.
Like other daemons, fabricd configuration is done in an OpenFabric specific
configuration file fabricd.conf
.
OpenFabric router
To enable the OpenFabric routing protocol, an OpenFabric router needs to be created in the configuration:
- router openfabric WORD
Enable or disable the OpenFabric process by specifying the OpenFabric domain with ‘WORD’.
- net XX.XXXX. ... .XXX.XX
Set/Unset network entity title (NET) provided in ISO format.
- domain-password [clear | md5] <password>
Configure the authentication password for a domain, as clear text or md5 one.
- attached-bit [receive ignore | send]
Set attached bit for inter-area traffic:
receive If LSP received with attached bit set, create default route to neighbor
send If L1|L2 router, set attached bit in LSP sent to L1 router
- log-adjacency-changes
Log changes in adjacency state.
- set-overload-bit
Set overload bit to avoid any transit traffic.
- fabric-tier (0-14)
Configure a static tier number to advertise as location in the fabric
OpenFabric Timer
- lsp-gen-interval (1-120)
Set minimum interval in seconds between regenerating same LSP.
- lsp-refresh-interval (1-65235)
Set LSP refresh interval in seconds.
- max-lsp-lifetime (360-65535)
Set LSP maximum LSP lifetime in seconds.
- spf-interval (1-120)
Set minimum interval between consecutive SPF calculations in seconds.
OpenFabric interface
- ip router openfabric WORD
Activate OpenFabric on this interface. Note that the name of OpenFabric instance must be the same as the one used to configure the routing process (see command
router openfabric WORD
).
- openfabric csnp-interval (1-600)
Set CSNP interval in seconds.
- openfabric hello-interval (1-600)
Set Hello interval in seconds.
- openfabric hello-multiplier (2-100)
Set multiplier for Hello holding time.
- openfabric metric (0-16777215)
Set interface metric value.
- openfabric passive
Configure the passive mode for this interface.
- openfabric password [clear | md5] <password>
Configure the authentication password (clear or encoded text) for the interface.
- openfabric psnp-interval (1-120)
Set PSNP interval in seconds.
Showing OpenFabric information
- show openfabric summary
Show summary information about OpenFabric.
- show openfabric hostname
Show which hostnames are associated with which OpenFabric system ids.
- show openfabric interface
- show openfabric interface detail
- show openfabric interface <interface name>
Show state and configuration of specified OpenFabric interface, or all interfaces if no interface is given with or without details.
- show openfabric neighbor
- show openfabric neighbor <System Id>
- show openfabric neighbor detail
Show state and information of specified OpenFabric neighbor, or all neighbors if no system id is given with or without details.
- show openfabric database
- show openfabric database [detail]
- show openfabric database <LSP id> [detail]
- show openfabric database detail <LSP id>
Show the OpenFabric database globally, for a specific LSP id without or with details.
- show openfabric topology
Show calculated OpenFabric paths and associated topology information.
Debugging OpenFabric
- debug openfabric adj-packets
OpenFabric Adjacency related packets.
- debug openfabric checksum-errors
OpenFabric LSP checksum errors.
- debug openfabric events
OpenFabric Events.
- debug openfabric local-updates
OpenFabric local update packets.
- debug openfabric lsp-gen
Generation of own LSPs.
- debug openfabric lsp-sched
Debug scheduling of generation of own LSPs.
- debug openfabric packet-dump
OpenFabric packet dump.
- debug openfabric protocol-errors
OpenFabric LSP protocol errors.
- debug openfabric route-events
OpenFabric Route related events.
- debug openfabric snp-packets
OpenFabric CSNP/PSNP packets.
- debug openfabric spf-events
- debug openfabric spf-statistics
- debug openfabric spf-triggers
OpenFabric Shortest Path First Events, Timing and Statistic Data and triggering events.
- debug openfabric update-packets
Update-related packets.
- show debugging openfabric
Print which OpenFabric debug levels are active.
Sample configuration
A simple example:
!
interface lo
ip address 192.0.2.1/32
ip router openfabric 1
ipv6 address 2001:db8::1/128
ipv6 router openfabric 1
!
interface eth0
ip router openfabric 1
ipv6 router openfabric 1
!
interface eth1
ip router openfabric 1
ipv6 router openfabric 1
!
router openfabric 1
net 49.0000.0000.0001.00
Alternative example:
hostname fabricd
router openfabric DEAD
net 47.0023.0000.0003.0300.0100.0102.0304.0506.00
lsp-lifetime 65535
hostname isisd-router
domain-password foobar
interface eth0
ip router openfabric DEAD
openfabric hello-interval 5
openfabric lsp-interval 1000
! -- optional
openfabric retransmit-interval 10
openfabric retransmit-throttle-interval