Brocade Communications Systems FastIron SX 800 Configuration Manual page 422

Four-byte Autonomous System Numbers (AS4)
NOTE
Use soft-outbound only if the outbound policy is changed. The soft-outbound parameter updates all outbound routes by
applying the new or changed filters. However, the device sends to the neighbor only the existing routes that are affected by the
new or changed filters.The soft out parameter updates all outbound routes and then sends the entire BGP4 route table on the
device to the neighbor after the device changes or excludes the routes affected by the filters.
AS4 notation
A AS4 can appear in either a plain or a dot notation format in the output of show commands. To select one of these formats, specify the
format before entering the show command. This section defines these formats and describes how to select a format. The following
notations are currently supported:
• With the default asplain , the ASN is a decimal integer in the range 1 - 4294967295.
• With asdot +, all ASNs are two integer values joined by a period character in the following format:
<high order 16-bit value in decimal>.<low order 16-bit value in decimal>
Using the asdot+ notation, an autonomous system number of value 65526 is represented as the string "0.65526," and an autonomous
system number of value 65546 is represented as the string "1.10."
• With asdot, an ASN less than 65536 uses the asplain notation (and represents autonomous system number values equal to or
greater than 65536 using the asdot+ notation). Using the asdot notation, ASN 65526 is represented as the string "65526,"
and ASN 65546 is represented as the string "1.10".
NOTE
You can enter autonomous system numbers in any format. However, if you want the asdot or the asdot+ format to appear in the
output of a show command, you must specify these in the CLI.
NOTE
Remember that autonomous system path matching that uses regular expression is based on the configured autonomous
system format.
The following command sequences show how to enable the different notations for AS4s and how these notations appear in the output
display.
To see ASNs in asplain, use the show ip bgp command.
device(config)# show ip bgp
Total number of BGP Routes: 1
Status codes:s suppressed, d damped, h history, * valid, > best, i internal, S stale
Origin codes: i - IGP, e - EGP,? - incomplete
Network
*> 47.1.1.0/24
To specify asdot notation before displaying IP BGP4 information, use the as-format command.
device(config)# as-format asdot
device(config)# show ip bgp
Total number of BGP Routes: 1
Status codes: s suppressed, d damped, h history, * valid, > best, i internal, S stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop
*> 10.1.1.0/24 192.168.1.5
1.0 1.1 1.2 1.3 1.9464 ?
Syntax: [no] as-format asplain | asdot | asdot+
The default is asplain and can be restored using the no version of the command, if the CLI is currently using asdot or asdot+ .
422
Next Hop Metric LocPrf Weight Path
192.168.1.5 1 100
Metric LocPrf Weight Path
1 100
0 90000 100 200 65535 65536 65537 65538 65539 75000 ?
0 1.24464 100 200 65535
FastIron Ethernet Switch Layer 3 Routing
53-1003627-04