MX Series Router Packet Forwarding Engine (PFE) Architecture | 21
Ethernet Frame Counts and Statistics on MX Series Routers | 26
Ethernet Frame Counts and Statistics on MX Series Routers
The following considerations apply to Ethernet frame counts and statistics on Juniper Networks MX Series
5G Universal Routing Platforms:
•
Interface counters do not include the 7-byte Ethernet frame preamble and the frame delimiter byte.
•
In Media Access Control (MAC) statistics. the frame size includes the MAC header and cyclical redundancy
check (CRC) before any VLAN rewrite or other rules are applied.
•
In traffic statistics, the frame size includes the Layer 2 header without the trailer CRC and after any VLAN
rewrite or other rules are applied.
RELATED DOCUMENTATION
Layer 2 and Layer 3 Features on MX Series Routers
MX2020 Router Hardware Components and CLI Terminology
The MX2020 router supports the components in Table 8 on page 26.
Table 8: MX2020 Router Hardware Components and CLI Terminology
DescriptionCLI Name
Hardware Model
NumberComponent
“MX2020 Physical
Specifications” on
page 125
“MX2020 Chassis
Description” on page 6
MX2020CHAS-BP-MX2020Chassis
MX2020-PREMIUM2-ACAC Optimized
Power Chassis
26
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