Cisco XR 12404 Installation Manual page 86

Connecting the PRP to an Ethernet Network
PRP Ethernet Connections
Cisco XR 12404 Router Installation Guide
3-21
Forwarding (CEF) functions are switched off by default for security reasons.
Cisco strongly cautions you to consider the security implications of switching on
CEF routing functions on these ports.
Figure 3-14 is an example of the functionality of an Ethernet port. In this example,
you cannot access Network 2.0.0.0 through the Ethernet port (ETH0) on the PRP
in router A; you can only access the hosts and router C, which are in Network
1.0.0.0 (see dotted arrows in
To access Network 2.0.0.0 from router A, you must use an interface port on one
of your line cards (in this example, a Packet-over-SONET (POS) line card in
router A) to go through router B, through router C, and into Network 2.0.0.0 (see
solid arrows in Figure
Figure 3-14 Using the Ethernet Port on the PRP
Router A
(Cisco 12000 series)
EO
POS
EO
Router B
(Cisco 7500 series)
Figure 3-15 shows a PRP RJ-45 receptacle and cable connectors. The RJ-45
connection does not require an external transceiver. The RJ-45 connection
requires Category 5 unshielded twisted-pair (UTP) cables, which are not available
from Cisco Systems, but are available from commercial cable vendors.
lists the port pinouts for the RJ-45 receptacle.
Figure 3-14).
3-14).
Network 1.0.0.0
Host A
Host B
Router C
(Cisco 7500 series)
Chapter 3 Installing the Router
Network 2.0.0.0
Host A
Table 3-3
OL-13830-02