HP A-MSR20 Installation Manual page 51

For example, on the A-MSR20-21:
The two fixed WAN ports are numbered Ethernet 0/0 and Ethernet 0/1.

The eight fixed Ethernet LAN ports are numbered Ethernet 0/2, Ethernet 0/3, Ethernet 0/4, Ethernet

0/5, Ethernet 0/6, Ethernet 0/7, Ethernet 0/8, and Ethernet 0/9.
The interface module SIC-4FSW is installed in slot 1. The Ethernet ports on the interface module are

numbered from left to right: Ethernet 1/0, Ethernet 1/1, Ethernet 1/2, and Ethernet 1/3.
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