Crossover UTP cable (Ethernet cable) plug into the RJ45 connector labeled as ETH0 or
ETH1 (see figure below).
The insulation strength of Ethernet ports from each other and from the rest of the router
(grounding) is dependent on the router version:
Router Version
Insul. Strength from Router
Without PoE
1.5 kV
PoE PD
1.5 kV
PoE PSE
none
5.8.7 Power over Ethernet (PoE)
On the router models with PoE, the PoE+ standard IEEE 802.3at-2009 and PoE standard
IEEE 802.3af-2003 are supported in both Ethernet ports (ETH0, ETH1). The PoE PD version
allows the router to be powered over Ethernet by another PoE PSE device. The PoE PSE
version lets the router power other devices over Ethernet.
PoE PD
Figure 19: Connection of ethernet cable
Table 13: Insulation strength of Ethernet ports
Figure 20: PoE PD usage
20
5. ROUTER DESIGN
Insul. Strength between Ports
1.5 kV
none
none