Description

This knowledge base article provides an overview of the hardware specifications and routing performance capabilities of the MX104 router. It includes key platform metrics such as routing throughput, routing table capacity, forwarding information base (FIB) scale, CPU architecture, memory, and routing scalability. This information can be used for capacity planning, deployment validation, and infrastructure documentation.

Solution

ParameterSpecification
Routing Throughput80 Gbps
Packets Per Second (PPS)Forwarding performance depends on packet size. A fixed PPS value is not specified for the platform.
Concurrent SessionsNot applicable for a routing platform.
New Sessions Per Second (CPS)Not applicable for a routing platform.
CPU ArchitectureRE-MX-104 Routing Engine based on Intel x86 architecture running Junos OS. Packet forwarding is performed by the Junos Trio chipset.
Memory (RAM)4 GB Routing Engine RAM (RE-MX-104).
Routing Information Base (RIB) CapacityIPv4: 4M routes IPv6: 3M routes
Forwarding Information Base (FIB) CapacityIPv4: 1M routes IPv6: 512K routes
Maximum VPN ScaleSupports large-scale MPLS, L2VPN, and L3VPN deployments. The maximum number of VPN tunnels depends on the tunnel type (L3VPN, L2VPN, GRE, IPsec, MPLS LSPs), routing scale, and enabled services.
Routing ScalabilitySupports Internet-scale routing with full Internet routing tables and hundreds of BGP peers. Routing scalability is primarily constrained by Routing Engine memory and RIB/FIB capacity rather than protocol neighbor limits.

 

Please note these values(RIB capacity and FIB capacity) are approximate and only valid if you use IPv4 only or IPv6 only. If you use both protocols, the values decrease as both protocols use the Router's resources.

 

For additional hardware specifications, platform limitations, and deployment guidance, refer to the hardware guide

Modification History

2026-07-04 : Article Created