Juniper Networks ERX Hardware 8 - Manual (Page 90)

ERX 8.0.x Hardware Guide
Figure 35: X.21/V.35 Module with 50-Pin X.21/V.35 Connector
X.21/V.35
I/O
Port 0
g013761
Redundant Ports
Some modules have redundant ports. See the ERX Module Guide for specifications.
Cabling both ports provides a redundant path to the module.
CAUTION: For port redundancy to operate correctly on a GE I/O module that
supports SFPs, both the primary and redundant ports on an E-series GE I/O module
must use the same type of SFP.
The Next Step
See “Powering Up ERX Routers” on page 73.
72 The Next Step