Bgp Extended Communities (Rfc 4360); Deny - Dell Z9500 Reference Manual

Field
Path
Example
Dell#show ip bgp dampened-paths
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
BGP local router ID is 192.168.11.5
Status codes: s suppressed, S stale, d dampened, h history, *
valid, > best
Path source: I - internal, a - aggregate, c - confed-external,
r - redistributed
Origin codes: i - IGP, e - EGP, ? - incomplete
d
Dell#

BGP Extended Communities (RFC 4360)

BGP Extended Communities, as defined in RFC 4360, is an optional transitive BGP attribute.
BGP Extended Communities provides two major advantages over Standard Communities:
• The range is extended from 4-octet (AA:NN) to 8-octet (Type:Value) to provide enough number
communities.
• Communities are structured using a new "Type" field (1 or 2-octets), allowing you to provide granular
control/filter routing information based on the type of extended communities.

deny

To reject (deny) from the two types of extended communities, route origin (rt) or site-of-origin (soo), use
this feature.
Z9500
Syntax
deny {rt | soo} {as4 ASN4:NN | ASN:NNNN | IPADDR:NN}
To remove (delete) the rule, use the no deny {rt | soo} {as4 ASN4:NN |
ASN:NNNN | IPADDR:NN} command.
Parameters
rt
soo
as4 ASN4:NN
Border Gateway Protocol
Description
Lists all the ASs the dampened route passed through to
reach the destination network.
n - network,
Network
55.0.0.0/24 172.16.0.2
Enter the keyword rt to designate a Route Origin
community.
Enter the keyword soo to designate a Site-of-Origin
community (also known as Route Origin).
Enter the keyword as4 then the 4-octet AS specific
extended community number in the format ASN4:NN (4-
byte AS number:2-byte community value).
D - denied, S - stale
From Reuse Path
00:36:23 200
465