We have created peer with our ISP and my ISP send community to do backhole but how do i configure that and send community string for blackhole traffic.
ISP said use
64682:0 community for RTBH, I did following config but didn't work
router bgp 100 bgp log-neighbor-changes redistribute static route-map RTBH neighbor 71.xxx.xxx.61 remote-as 200 neighbor 71.xxx.xxx.61 send-community network 70.xx.xx.0 mask 255.255.255.0 route-map RTBH permit 10 match tag 666 set community 64682:666 route-map RTBH permit 20
I am configured about
:0 in community because my router not accepting that.
here i am using route to send null.
ip route 71.x.x.100 255.255.255.255 Null0 tag 666
What i am doing wrong?
I was following this Doc to setup community RTBH http://cenic.org/network/bgp-blackhole-community
I have modify config with following info but still no luck and
no auto-summary is default in BGP
route-map RTBH permit 10 match tag 666 set community 64682:0 set ip next-hop 192.0.2.1 ! route-map RTBH permit 20
When i trigger null route i got following debug
debug ip routing logs
R1# *Jun 20 15:38:23.212: RT: updating static 70.xx.xx.1/32 (0x0) : via 0.0.0.0 Nu0 0 1048578 *Jun 20 15:38:23.212: RT: rib update return code: 17
64682:0, then the community in your configuration,
64682:666will not work.
666is they use for
match tag 666so my question is, Do i need to match my tag and community last number after
:? That is why i use
:666because it has an evil connotation, but you need to use what your ISP requires.
RT: rib update return code: 17I have updated my question too