Brocade Communications Systems ICX 7250 series, Руководство по настройке

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TABLE 49 IPv4 BGP4 commands for different configuration levels (continued)
Command Global (iPv4 and IPv6) IPv4 address family unicast
neighbor x x
network x
next-hop-enable-default x
next-hop-recursion x
redistribute x
rib-route-limit x
show x x
static-network
table-map x
timers x
update-time x
Entering and exiting the address family configuration
level
The BGP4 address family contains a unicast sub-level.
To go to the IPv4 BGP4 unicast address family configuration level, enter the following command.
device(config-bgp)# address-family ipv4 unicast
device(config-bgp)#
NOTE
The CLI prompt for the global BGP4 level and the BGP4 address-family IPv4 unicast level is the same.
Syntax: [no] address-family ipv4 unicast [ vrf vrf-name ]
The default is the IPv4 unicast address family level.
The vrf option allows you to configure a unicast instance for the VRF specified by the vrf-name variable.
To exit an address family configuration level, enter the following command.
device(config-bgp)# exit-address-family
device(config-bgp)#
Syntax: [no] exit-address-family
BGP route reflector
A BGP device selects a preferred BGP4 route for a specific prefix learned from multiple peers by using the BGP best path selection
algorithm, and installs the BGP4 route in the Routing Table Manager (RTM). The BGP device marks the preferred BGP4 route as the
best route, and advertises the route to other BGP4 neighbors. Generally, the RTM route table size is larger than the number of unique
BGP4 routes in the BGP4 route table. All preferred BGP4 routes are installed in RTM and are marked as the best BGP4 routes.
However, in certain configurations it is possible that the total number of preferred BGP4 routes may exceed the RTM route table size
limit. Therefore, some preferred BGP4 routes may not be installed in the RTM, and the BGP device is not able to forward traffic correctly
Entering and exiting the address family configuration level
Brocade FastIron Layer 3 Routing Configuration Guide
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