Manual:Fast Path

Applies to RouterOS: v6.0rc2 +

List of RouterBoards with FastPath support

RouterBoard	Interfaces
RB3xx series	ether1,2
RB6xx series	ether1,2
RB7xx series	all ethernets
RB8xx series	ether1,2
RB9xx series	all ethernets
RB1000	all ethernets
RB1100 series	ether1-10,11
RB2011 series	all ethernets and sfp
CCR series routers	all ethernets and sfps

FastPath Handlers

Currently RouterOS has following fast path handlers:

• ipv4
• traffic generator
• mpls
• bridge

Note: Packet will be forwarded in fast path only if source and destination interfaces support fast path. See the list of supported interfaces.

IPv4 handler

IPv4 fast path is automatically used if following conditions are met:

• firewal rules are not configured,
• Traffic flow is disabled /ip traffic-flow enabled=no
• Simple and queue trees with parent=global are not configured.
• source interface is not bridge port or bonding slave
• destination interface queue is set to only-hw-queue and no queue tree entries with parent="dst interface"
• no vrrp, mesh, metarouter interface configuration,
• sniffer, torch and traffic generator is not running
• connection tracking is not active

/ip firewall connection tracking set enabled parameter has new auto value Which means that connection tracking is disabled by default until firewall rules are added.

Traffic Generator handler

Traffic Generator fast path is automatically used for interfaces that support this feature.

MPLS handler

MPLS fast path is automatically used for interfaces that support this feature.

Bridge handler

Bridge fast path is automatically used if following conditions are met:

• no bridge firewall rules (/interface bridge filter, /interface bridge nat) are configured,
• /interface bridge settings use-ip-firwall=no,
• destination interface queue is set to only-hw-queue,
• no vrrp, mesh, metarouter interface configuration,
• sniffer, torch and traffic generator is not running

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