Brocade Communications Systems ICX 7250 series, Configuration Manual

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Changing the device ID
The OSPF and BGP4 protocols use device IDs to identify devices that are running the protocols. A device ID is a valid, unique IP
address and sometimes is an IP address configured on the device. The device ID cannot be an IP address in use by another device.
By default, the device ID on a Brocade device is one of the following:
• If the device has loopback interfaces, the default device ID is the IP address on the lowest numbered loopback interface
configured on the Brocade device. For example, if you configure loopback interfaces 1, 2, and 3 as follows, the default device
ID is 10.9.9.9/24:
–
Loopback interface 1, 10.9.9.9/24
– Loopback interface 2, 10.4.4.4/24
– Loopback interface 3, 10.1.1.1/24
• If the device does not have any loopback interfaces, the default device ID is the lowest numbered IP interface address
configured on the device.
NOTE
Brocade devices use the same device ID for both OSPF and BGP4. If the device is already configured for OSPF, you may want
to use the device ID already assigned to the device rather than set a new one. To display the current device ID, enter the
show ip
command at any CLI level.
To change the device ID, enter a command such as the following.
device(config)# ip router-id 10.157.22.26
Syntax: [no] ip router-id ip-addr
The ip-addr can be any valid, unique IP address.
NOTE
You can specify an IP address used for an interface on the Brocade device, but do not specify an IP address that is being used
by another device.
Setting the local AS number
The local autonomous system number (ASN) identifies the AS in which the Brocade BGP4 device resides.
To set the local AS number, enter commands such as the following.
device(config)# router bgp
BGP4: Please configure 'local-as' parameter in order to enable BGP4.
device(config-bgp)# local-as 10
device(config-bgp)# write memory
Syntax: [no] local-as num
The num parameter specifies a local AS number in the range 1 through 4294967295. It has no default. AS numbers 64512 - 65535
are the well-known private BGP4 AS numbers and are not advertised to the Internet community.
Setting the local AS number for VRF instances
The local autonomous system (AS) number identifies the AS in which the BGP4 device resides.
You can assign different BGP AS numbers for each VRF instance. If you do not assign an AS number, the BGP VRF instances use the
default BGP AS number, as in previous releases.
The local-as command is available under the "global BGP" CLI level and "address- family ipv4 unicast vrf" CLI level.
Basic configuration tasks required for BGP4
Brocade FastIron Layer 3 Routing Configuration Guide
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