In this configuration example, the DCGW PE2 re-exports EVPN-IFF routes into EVPN-IFF (leaked) routes and EVPN-IFL routes. The BGP path attributes are propagated as shown in Figure 1. As described in BGP Path Attribute Propagation, EVPN extended communities, BGP encapsulation extended community and route targets are not propagated but instead, re-originated.
Figure 1. Propagation of BGP Path Attributes for EVPN-IFF
The following is an example configuration for PE4 and PE2 (PE1 has equivalent configuration as PE4).
// PE4 services for EVPN-IFF
A:PE-4>config>service>vprn# /configure service vprn 93
A:PE-4>config>service>vprn# info
----------------------------------------------
router-id 4.4.4.4
autonomous-system 64500
interface "evi-95" create
address 94.0.0.254/24
vrrp 1 owner passive
backup 94.0.0.254
exit
vpls "evi-95"
exit
exit
interface "evi-94" create
vpls "evi-94"
evpn-tunnel
exit
exit
bgp
min-route-advertisement 1
group "pe-ce"
family ipv4
type external
export "export-al-to-vnf"
neighbor 94.0.0.1
local-as 64500
peer-as 94
exit
exit
no shutdown
exit
no shutdown
----------------------------------------------
A:PE-4>config>service>vprn# /configure service vpls 95
A:PE-4>config>service>vpls# info
----------------------------------------------
allow-ip-int-bind
exit
stp
shutdown
exit
sap 1/1/c1/1:90 create
no shutdown
exit
no shutdown
----------------------------------------------
A:PE-4>config>service>vpls# /configure service vpls 94
A:PE-4>config>service>vpls# info
----------------------------------------------
allow-ip-int-bind
exit
vxlan instance 1 vni 94 create
exit
bgp
exit
bgp-evpn
no mac-advertisement
ip-route-advertisement
evi 94
vxlan bgp 1 vxlan-instance 1
no shutdown
exit
exit
stp
shutdown
exit
no shutdown
----------------------------------------------
// PE2 config
A:PE-2# configure service vprn 90
A:PE-2>config>service>vprn# info
----------------------------------------------
interface "evi-91" create
vpls "evi-91"
evpn-tunnel
exit
exit
bgp-evpn
mpls
auto-bind-tunnel
resolution any
exit
route-distinguisher 192.0.2.2:90
vrf-export "leak-color-51-into-93"
vrf-target import target:64500:90
no shutdown
exit
exit
no shutdown
----------------------------------------------
A:PE-2>config>service>vprn# /configure service vpls 91
A:PE-2>config>service>vpls# info
----------------------------------------------
allow-ip-int-bind
exit
vxlan instance 1 vni 91 create
exit
bgp
exit
bgp-evpn
no mac-advertisement
ip-route-advertisement
evi 91
vxlan bgp 1 vxlan-instance 1
no shutdown
exit
exit
stp
shutdown
exit
no shutdown
----------------------------------------------
A:PE-2>config>service>vpls# /configure service vprn 93
A:PE-2>config>service>vprn# info
----------------------------------------------
interface "evi-94" create
vpls "evi-94"
evpn-tunnel
exit
exit
bgp-evpn
mpls
auto-bind-tunnel
resolution any
exit
route-distinguisher 192.0.2.2:93
vrf-export "leak-color-51-into-90"
vrf-target import target:64500:93
no shutdown
exit
exit
no shutdown
----------------------------------------------
A:PE-2>config>service>vprn# /configure service vpls 94
A:PE-2>config>service>vpls# info
----------------------------------------------
allow-ip-int-bind
exit
vxlan instance 1 vni 94 create
exit
bgp
exit
bgp-evpn
no mac-advertisement
ip-route-advertisement
evi 94
vxlan bgp 1 vxlan-instance 1
no shutdown
exit
exit
stp
shutdown
exit
no shutdown
----------------------------------------------
A:PE-2>config>service>vpls# /show router policy "leak-color-51-into-90"
entry 10
from
community "color-51"
exit
action accept
community add "RT64500:90" "RT64500:93"
exit
exit
default-action accept
community add "RT64500:93"
exit
A:PE-2>config>service>vpls# /show router policy "leak-color-51-into-93"
entry 10
from
community "color-51"
exit
action accept
community add "RT64500:90" "RT64500:93"
exit
exit
default-action accept
community add "RT64500:90"
exit