Cisco NCS 6000 Series

/* Configure BGP with flow-tag propagation */
Router(config)# router bgp 10
Router(config-bgp)# bgp router-id 1.1.1.1
Router(config-bgp)# address-family ipv4 unicast
Router(config-bgp-af)# table-policy SETFLOWTAG
Router(config-bgp-af)# redistribute static
Router(config-bgp-af)# bgp attribute-download
Router(config-bgp-af)# redistribute connected
Router(config-bgp-af)# exit
Router(config-bgp)# neighbor 20.20.20.1/24
Router(config-bgp-nbr)# remote-as 20
Router(config-bgp-nbr)# address-family ipv4 unicast
Router(config-bgp-nbr-af)# route-policy BGPIN in
Router(config-bgp-nbr-af)# route-policy BGPOUT out
Router(config-bgp-nbr-af)# exit
Router(config-bgp-nbr)# exit
Router(config-bgp)# exit
Router(config)# route-policy BGPIN
Router(config-rpl)# pass
Router(config-rpl)# end-policy
Router(config)# route-policy BGPOUT
Router(config-rpl)# pass
Router(config-rpl)# end-policy
/* Enter the interface configuration mode and enable flow tag on an interface. */
Router(config)# interface GigabitEthernet 0/0/0/1
Router(config-if)# ipv4 address 10.10.10.1 255.255.255.0
Router(config-if)# service-policy type pbr input FLOWMATCH
Router(config-if)# no shut
/* Commit the configuration */
Router(config-if)# commit
Mon Mar 19 07:59:01.081 IST
RP/0/0/CPU0:Mar 19 07:59:01.537 : ifmgr[403]: %PKT_INFRA-LINK-3-UPDOWN : Interface
GigabitEthernet0/0/0/1, changed state to Down
RP/0/0/CPU0:Mar 19 07:59:01.619 : ifmgr[403]: %PKT_INFRA-LINK-3-UPDOWN : Interface
GigabitEthernet0/0/0/1, changed state to Up
/* Validate the configuraton */
Router(config)# do show run
Mon Mar 19 08:03:31.106 IST
Building configuration...
!! IOS XR Configuration 0.0.0
!! Last configuration change at Mon Mar 19 08:02:55 2018 by UNKNOWN
…
class-map type traffic match-any FLOWMATCH36
match flow-tag 36
end-class-map
!
!
class-map type traffic match-any FLOWMATCH40
match flow-tag 40
end-class-map
!
policy-map type pbr FLOWMATCH
class type traffic FLOWMATCH36
transmit
!
class type traffic FLOWMATCH40
transmit
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
97
Implementing BGP
Configuring Destination-Based Flow-Tag Propagation