IP Router Configuration
Router Configuration Guide 27
Router ID
The router ID, a 32-bit number, uniquely identifies the router within an autonomous system
(AS) (see Autonomous Systems (AS)). In protocols such as OSPF, routing information is
exchanged between areas, groups of networks that share routing information. It can be set to
be the same as the loopback address. The router ID is used by both OSPF and BGP routing
protocols in the routing table manager instance.
There are several ways to obtain the router ID. On each router, the router ID can be derived
in the following ways.
• Define the value in the config>router router-id context. The value becomes the
router ID.
• Configure the system interface with an IP address in the config>router>interface ip-
int-name context. If the router ID is not manually configured in the config>router
router-id context, then the system interface acts as the router ID.
• If neither the system interface or router ID are implicitly specified, then the router ID
is inherited from the last four bytes of the MAC address.
• The router can be derived on the protocol level; for example, BGP.
Priority
mode queue
Profile mode
queue
From new
base FC
unless
overridden
by DE=1
From QPPB, unless
packet is marked in or
out of profile in which
case follows profile.
Default is high priority
From new
base FC
From original FC
and sub-class
Profile mode
queue
Policer From new
base FC
unless
overridden
by DE=1
If DE=1 override then
low otherwise from
QPPB. If no DEI or
QPPB overrides then
follows original FC’s
profile mode rules.
From new
base FC
From original FC
and sub-class
Policer Profile mode
queue
From new
base FC
unless
overridden
by DE=1
From QPPB, unless
packet is marked in or
out of profile in which
case follows profile.
Default is high priority
From new
base FC
From original FC
and sub-class
Table 2: QPPB Interactions with SAP Ingress QoS (Continued)
Original FC
object
mapping
New FC
object
mapping
Profile Priority (drop
preference)
DE=1
override
In/out of profile
marking
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