Configuring Bgp4 - Dell PowerConnect B-RX Configuration Manual

As a guideline, BigIron RX switches with a 2 GB Management 4 module can accommodate 150 –
200 neighbors, with the assumption that the BigIron RX receives about one million routes total
from all neighbors and sends about eight million routes total to neighbors. For each additional one
million incoming routes, the capacity for outgoing routes decreases by around two million.

Configuring BGP4

Once you activate BGP, you can configure the BGP options. On a BigIron RX there are two
configuration levels: global and address family.
At the global level, all BGP configurations apply to IPv4 and IPv6. You enter this layer using the
router bgp command.
Under the global level, you specify an address family. Address families separate the IPv4 and IPv6
BGP configuration. You enter this level by entering the address-family command at the router bgp
level. The command requires you to specify the IPv4 or IPv6 network protocol.
The address family command also requires you to select a sub-address family, which is the type of
routes for the configuration. You specify multicast or unicast routes.
FIGURE 112
Table 26.1 shows what commands are available at the various BGP configuration levels.
TABLE 118
Command
address-family
address-filter
aggregate-address
always-compare-med
as-path-filter
BigIron RX Series Configuration Guide
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BGP configuration levels
Global commands for BGP
router bgp
and all address families
IPv4 BGP commands at different configuration levels
Global IPv4 address
(iPv4 and family unicast
IPv6)
x x
x
x
x
x
Configuring BGP4
address-family
IPv6 unicast
Commands for IPv6
BGP unicast routes
address-family
IPv4
IPv4 address See
family
multicast
x "Entering and exiting the address family
configuration level"
"Filtering specific IP addresses"
x "Aggregating routes advertised to BGP4
neighbors" on page 749
"Configuring the device to always compare
MEDs" on page 749
26
multicast
Commands for IPv4
MBGP routes
unicast
Commands for IPv4
BGP unicast routes
on page 741
on page 742
737