SV-273578r1110887_rule
V-273578
SRG-NET-000018-RTR-000010
RCKS-RTR-000100
CAT III
10
Configure the router to reject updates from CE routers with an originating AS in the AS_PATH attribute that does not belong to that customer.
1. Configure the AS_PATH filter list.
ICX(config)# ip as-path access-list BGP_filter seq 5 permit ^yy$
ICX(config)# ip as-path access-list BGP_filter seq 10 deny .*
2. Apply to BGP neighbor.
ICX(config)# router bgp
ICX(config-bgp-router)# neighbor x.x.x.x filter-list BGP_filter in
This requirement is not applicable for the DODIN Backbone.
Review ICX router configuration for AS_PATH filter statements for BGP:
ip as-path access-list BGP_filter seq 5 permit ^yy$
ip as-path access-list BGP_filter seq 10 deny .*
!
router bgp
local-as xx
neighbor x.4.4.4 remote-as yy
neighbor x.4.4.4 filter-list BGP_filter in
!
If the ICX router is not configured to reject updates from CE routers with an originating AS in the AS_PATH attribute that does not belong to that customer, this is a finding.
V-273578
False
RCKS-RTR-000100
This requirement is not applicable for the DODIN Backbone.
Review ICX router configuration for AS_PATH filter statements for BGP:
ip as-path access-list BGP_filter seq 5 permit ^yy$
ip as-path access-list BGP_filter seq 10 deny .*
!
router bgp
local-as xx
neighbor x.4.4.4 remote-as yy
neighbor x.4.4.4 filter-list BGP_filter in
!
If the ICX router is not configured to reject updates from CE routers with an originating AS in the AS_PATH attribute that does not belong to that customer, this is a finding.
M
5696