3com 8807 Guida Di Riferimento
508
C
HAPTER
27: BGP C
ONFIGURATION
C
OMMANDS
Example
# Display the information about the AS paths.
<SW8800> display bgp paths ^600$
Flags: # - valid, ^ - best,
D - damped, H - history,
I - internal, S - aggregate suppressed
Id Hash-Index References Aggregator Origin As-Path
--------------------------------------------------------------------
6 90 15 <null> IGP 600
display bgp peer
Syntax
display bgp peer [ peer-address ] [ verbose ]
View
Any view
Parameter
peer-address: Specifies the peer to be displayed.
verbose: Displays the detailed information of the peer.
Table 72 Description of the fields of the display bgp paths command
Field
Description
Flags
State flags:
# - valid (valid)
^ - best (selected)
D - damped (discarded)
H - history (history)
I - internal (interior gateway protocol)
S - aggregate suppressed (suppressed)
Id
Value of sequence number
Hash-Index Value of Hash-index
References Count of times that the route is referenced
Aggregator Mask length of aggregate route
Origin
Origin attribute of route, which indicates that the route updates its origin
relative to the route originating it from AS. It has three optional values:
relative to the route originating it from AS. It has three optional values:
IGP
The route belongs to inside of AS. BGP treats
aggregate route and the route defined by the
command network as inside of AS, and origin type
as IGP.
aggregate route and the route defined by the
command network as inside of AS, and origin type
as IGP.
EGP
The route is learned from exterior gateway protocol
(EGP).
(EGP).
INC
Short for INCOMPLETE: indicates that the original
source of the route information is unknown
(learned by other methods). BGP sets the origin of
the route imported through other IGP protocols as
INCOMPLETE
source of the route information is unknown
(learned by other methods). BGP sets the origin of
the route imported through other IGP protocols as
INCOMPLETE
As-path
AS-path attribute of route, which records all AS areas that the route passes.
With it, route loop can be avoided
With it, route loop can be avoided