Huawei Quidway S8500 Series, Руководство по управлению

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Command Manual – MPLS
Quidway S8500 Series Routing Switches
Chapter 2 BGP/MPLS VPN Configuration Commands
Huawei Technologies Proprietary
2-26
Description
Use the peer advertise-community command to configure to transmit the community
attributes to a specified peer group.
Use the undo peer advertise-community command to cancel this configuration.
By default, the BGP advertiser does not transmit the community attributes to peer
group.
Related command: if-match community-list and apply community .
Example
# Transmit the community attributes to the peer group test.
[Quidway-bgp] ipv4-family vpnv4
[Quidway-bgp-af-vpn] peer test advertise-community
2.1.28 peer allow-as-loop
Syntax
peer { group-name | peer-address } allow-as-loop [ asn-limit ]
undo peer { group-name | peer-address } allow-as-loop
View
VPNv4 subaddress family view, VPN-instance sub-address family view
Parameter
group-name : Name of a peer group, consisting of 1 to 47 alphanumeric characters.
peer-address : IP address of a specified peer.
asn-limit : Maximum times for which autonomous system (AS) number is allowed to
receive in route updates.
Description
Use the peer allow-as-loop command to allow loop in the route updates in the Hub &
Spoke networking mode.
Use the undo peer allow-as-loop command to prohibit loop in the route updates.
By default, loop is prohibited in the received routing updates; by using the peer
allow-as-loop command, loop is allowed in the received routing updates. The default
value of asn-limit argument is 3.
Standard BGP tests loop using AS number. However, on a Hub & Spoke network
running EBGP between PE and CE, PE carries its own AS number when advertising
route information to CE. Accordingly, the updated route information will contain PE’s AS
number when it is sent from CE. In this case, PE will not accept the route updates.