BigIron RX Series Configuration Guide 153
53-1002253-01
Chapter
7
Configuring IP
Overview of configuring IP
The Internet Protocol (IP) is enabled by default. This chapter describes how to configure IP 
parameters on the device. 
The IP packet flow
Figure 5 Shows how an IP packet moves through a device. 
FIGURE 5   IP Packet flow through a device 
Figure 5 Shows the following packet flow:
Incoming
Port
Drop
Permit
Deny
IP ACLs
(hardware)
PBR
(hardware)
Yes
No
Next Hop
Table
(hardware)
Match
No Match
IP Routing
(hardware)
Forward to CPU
Lowest
Metric
Directly
connected
host
forwarding
cache
(software)
ECMP and
Trunk Load
Balancing
(hardware)
Outgoing
Port
IP Route
Table
(software)
ARP
Table
(software)
Static ARP
Table
Lowest
Admin.
Distance
RIP
OSPF
BGP4