Brocade Communications Systems FastIron X Series User Manual

To activate asdot+ notation, enter as-format asdot+ in the CLI.
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 Metric LocPrf Weight Path
*> 10.1.1.0/24 192.168.1.5 1 100 0 1.24464 0.100 0.200
0.65535 1.0 1.1 1.2 1.3 1.9464 ?
BGP4 AS4 attribute errors
This section describes the handling of the confederation path segments in the AS4_PATH attribute, and also
species the error handling
for the new attributes.
To support AS4, the following attributes: AS4_PATH and AS4_Aggregator were specied in RFC 4893. Confederation path segments
in an AS4_PATH are discarded and if there are any other errors such as: attribute length , ag , confederation segments after AS_SEQ/
AS_SET, Invalid segment types and More than one AS4_PATH in these new attributes, the attribute is discarded and the error is logged.
Error logs
The device generates a log when it encounters attribute errors in AS4_PATH and AS4_AGGREGATOR.
NOTE
Logging of errors is rate-limited to not more than one message for every two minutes. Some errors may be lost due to this
rate-limiting.
Sample log messages for various attribute errors are shown here.
Attribute length error (ignore the AS4_PATH)
SYSLOG: Sep 9 19:02:03:<11>mu2, BGP: From Peer 192.168.1.1 received invalid AS4_PATH attribute length (3)
- entire AS4_PATH ignored
Attribute ag error (ignore the AS4_PATH)
SYSLOG: Sep 9 19:02:03:<11>mu2, BGP: From Peer 192.168.1.1 received invalid AS4_PATH attribute flag (0x40)
- entire AS4_PATH ignored
Confederation segments after AS_SEQ/AS_SET (ignore the AS4_PATH)
SYSLOG: Sep 9 19:02:03:<11>mu2, BGP: From Peer 192.168.1.1 received invalid Confed info in AS4_PATH (@byte
43) - entire AS4_PATH not ignored
Invalid segment types (ignore the AS4_ PATH)
SYSLOG: Sep 9 19:02:03:<11>mu2, BGP: From Peer 192.168.1.1 received incorrect Seq type/len in AS4_PATH
(@byte 41) - entire AS4_PATH ignored
More than one AS4_PATH (Use the
rst one and ignore the others)
SYSLOG: Sep 9 19:02:03:<11>mu2, BGP: From Peer 192.168.1.1 received multiple AS4_PATH attributes - used
first AS4_PATH attribute only
BGP4 AS4 attribute errors
FastIron Ethernet Switch Layer 3 Routing
53-1003627-04 423

Brocade Communications Systems FastIron X Series Specifications

General

Brand	Brocade Communications Systems
Model	FastIron X Series
Category	Switch
Language	English