Allied Telesis C613-16164-00 REV E manual Configuring Dynamic route limits, 100

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Route Limits

Description

Command Syntax

Configuring Dynamic route limits

AW+ supports the ability to limit dynamic routes via the max-fib-routes command in the global VRF domain, which is unlimited by default. This same AW+ command is now also able to be applied on a per VRF basis.

max-fib-routes

Use the command max-fib-routes to set the maximum number of dynamic routes in FIB (Forwarding Information Base). Static and Connected routes are not included. Dynamic routes to be added to the HW FIB table that exceed the configured limit are rejected.

When an additional threshold value (in percentage) is configured, a warning message is generated if the number of dynamic routes in the FIB exceeds the threshold, and the routes exceeding the limit are rejected.If warning-only is specified, routes are still allowed to be added, but a warning message is generated when the threshold is reached.

When this command is executed in VRF Configuration mode, it sets the maximum number of dynamic routes that can be added to the HW FIB table associated with the VRF instance.

max-fib-routes <1-4294967294> (<1-100>warning-only)

PARAMETER

DESCRIPTION

 

 

max-fib-routes

Set maximum fib routes number

 

 

<1- 4294967294>

Allowed number of fib routes excluding Connect and Static

 

 

<1-100>

Warning threshold in percentage

 

 

warning-only

Allow to add more routes than the limit but with warning message

 

 

Default By default, the maximum number of dynamic routes is 4294967294 and no warning threshold is set.

Command Level

PROMPT

MODE

PRIVILEGE LEVEL

 

 

 

(config)

CONFIG_MODE

PRIVILEGE_MAX

 

 

 

(config-vrf)

VRF_MODE

PRIVILEGE_VR_MAX

 

 

 

Warning thresholds (percentage) can be configured for dynamic route limits.

awplus(vrf-config)#max-fib-routes <1-4294967294> WARNING-

THRESHOLD%

Examples To set the maximum number of dynamic routes to 2000 and warning threshold with 75%, applied to VRF red HW FIB, configure the following:

Configure VRF-lite Page 85

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Contents What is VRF-lite? How To Configure VRF-lite IntroductionCommand summary Software feature licensesWho should read this document? Which products and software version does it apply to?Contents VRF GlossaryUnderstanding VRF-lite Route table and interface management with VRF-lite VRF-lite security domainsInterface management with VRF Vlan5Adding a VRF-aware static ARP Route management with VRFInter-VRF communication Static and dynamic inter-VRF routing For example VRF-lite features in AW+Route limiting per VRF instance VRF aware services includeVRF-aware utilities within AW+  Ping SSH client  Telnet client TCP dump Awplusconfig# access-list standard Configuring VRF-liteAwplusconfig-if#switchportaccess vlanx Family Awplusconfig-route-map#match ip Ip route 192.168.50.0/24 Ip route vrf green 192.168.1.0/24 Static inter-VRF routingForwarding Information Base FIB and routing protocols Dynamic inter-VRF communication explainedBGP Inter-VRF communication via BGP Route-target import ASNVRFinstance For example Using the route-target commandRoute-target both ASNVRFinstance For example Can be replaced withIf VRF red initially includes Also, if VRF shared configuration includesIf VRF shared initially includes Via BGP IVR, VRF shared will end up with the routesThen via BGP IVR, VRF red will end up with the routes If VRF shared configuration includesViewing source VRF and attribute information for a prefix How VRF-lite security is maintainedMultiple VRFs without inter-VRF communication Simple VRF-lite configuration examples26 Configure VRF-lite Vlan 28 Configure VRF-lite Configure VRF-lite 30 Configure VRF-lite Configure VRF-lite 32 Configure VRF-lite Inter-VRF configuration examples with Internet access Configuration Configure VRF-lite Example B Configuration 38 Configure VRF-lite Configure VRF-lite Example C Configuration 42 Configure VRF-lite Configure VRF-lite Network description Configuring a complex inter-VRF solution Each VLANs is associated with a VRF instance VRF communication plan Configuration breakdown Configure VRF-lite Configure Vrfs Configure the hardware ACLs Within the same IP subnet that the switch port is a member This example, three access groups are attached to port192.168.43.0/24 via the shared VRF Configure Vlan Database Configure IP Addresses Configure VRF-lite Configure Dynamic Routing Configure VRF-lite 56 Configure VRF-lite Configure Static Routing Complete show run output from VRF device is below Configure VRF-lite 60 Configure VRF-lite Configure VRF-lite IP route table from VRF device is below VRF blue Hostname Internetrouter Hostname sharedrouter N1 Ospf Nssa Hostname redospfpeerHostname greeniBGPpeer Hostname bluerippeer Hostname orangerouter Hostname orangeospfpeer VCStack and VRF-lite Other features used in this configurationStack provisioning GreyVirtual Chassis ID X610 VCStack configurationX900 configuration 74 Configure VRF-lite Communication plan Sharing VRF routing and double tagging on the same portGreen PortX610 a ConfigurationsX610 B Configure VRF-lite Additional notes BGP configuration tips 80 Configure VRF-lite VRF device Red router vlan database Red router Route Limits Configuring static route limitsAllowed number of fib routes excluding Connect and Static Configuring Dynamic route limits100 Syntax No max-fib-routesVRF-lite usage guidelines General Useful VRF-related diagnostics command listRouting general Routing protocols IP prefix network, e.g TCPdump HW platform table commands

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