Bgp Extended Communities (Rfc 4360); Deny - Dell C9000 Series Reference Manual

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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.
C9000 Series
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
ASN:NNNN
IPADDR:NN
Defaults Not configured.
Command Modes CONFIGURATION (conf-ext-community-list)
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).
Enter the 2-octet AS specific extended community number in
the format ASN:NNNN (2-byte AS number:4-byte community
value).
Enter the IP address specific extended community in the format
IPADDR:NN (4-byte IPv4 Unicast Address:2-byte community
value).
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