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EVPN Type-2 was withdrawn on "no rd" in VNI and never advertised to peer with auto-rd, also not present in the local database #3345

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karamalla0406 opened this issue Nov 15, 2018 · 2 comments
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EVPN Type-2 was withdrawn on "no rd" in VNI and never advertised to peer with auto-rd, also not present in the local database #3345

karamalla0406 opened this issue Nov 15, 2018 · 2 comments
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karamalla0406 commented Nov 15, 2018 •
edited by qlyoung

Before:

dev# show ip bgp l2vpn evpn
Route Distinguisher: as2 6500:100

*> [2]:[0]:[48]:[00:50:56:b5:2e:5b]
                    1.1.1.1                                0 6500 i
*> [2]:[0]:[48]:[00:50:56:b5:2e:5b]:[32]:[22.1.1.3]
                    1.1.1.1                                0 6500 i
*> [2]:[0]:[48]:[00:50:56:b5:49:e8]
                    2.2.2.2                            32768 i
*> [2]:[0]:[48]:[00:50:56:b5:49:e8]:[32]:[22.1.1.4]
                    2.2.2.2                            32768 i
*> [3]:[0]:[32]:[1.1.1.1]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[2.2.2.2]
                    2.2.2.2                            32768 i
Route Distinguisher: as2 6500:200

*> [2]:[0]:[48]:[00:50:56:b5:d8:2c]
                    1.1.1.1                                0 6500 i
*> [2]:[0]:[48]:[00:50:56:b5:d8:2c]:[32]:[23.1.1.3]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[1.1.1.1]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[2.2.2.2]
                    2.2.2.2                            32768 i
Route Distinguisher: as2 6500:10004

*> [5]:[0]:[24]:[22.1.1.0]
                    2.2.2.2                  0         32768 i
*  [5]:[0]:[24]:[22.1.1.0]
                    1.1.1.1                  0             0 6500 i
*> [5]:[0]:[24]:[23.1.1.0]
                    1.1.1.1                  0             0 6500 i

Displayed 13 out of 13 total prefixes

After:

dev# show ip bgp l2vpn evpn
Route Distinguisher: as2 6500:100

*> [2]:[0]:[48]:[00:50:56:b5:2e:5b]
                    1.1.1.1                                0 6500 i
*> [2]:[0]:[48]:[00:50:56:b5:2e:5b]:[32]:[22.1.1.3]
                    1.1.1.1                                0 6500 i
*> [2]:[0]:[48]:[00:50:56:b5:49:e8]
                    2.2.2.2                            32768 i
*> [2]:[0]:[48]:[00:50:56:b5:49:e8]:[32]:[22.1.1.4]
                    2.2.2.2                            32768 i
*> [3]:[0]:[32]:[1.1.1.1]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[2.2.2.2]
                    2.2.2.2                            32768 i
Route Distinguisher: as2 6500:200

*> [2]:[0]:[48]:[00:50:56:b5:d8:2c]
                    1.1.1.1                                0 6500 i
*> [2]:[0]:[48]:[00:50:56:b5:d8:2c]:[32]:[23.1.1.3]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[1.1.1.1]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[2.2.2.2]
                    2.2.2.2                            32768 i
Route Distinguisher: as2 6500:10004

*> [5]:[0]:[24]:[22.1.1.0]
                    2.2.2.2                  0         32768 i
*  [5]:[0]:[24]:[22.1.1.0]
                    1.1.1.1                  0             0 6500 i
*> [5]:[0]:[24]:[23.1.1.0]
                    1.1.1.1                  0             0 6500 i

Displayed 13 out of 13 total prefixes

dev# show ip bgp l2vpn evpn
Route Distinguisher: as2 6500:100

*> [2]:[0]:[48]:[00:50:56:b5:2e:5b]
                    1.1.1.1                                0 6500 i
*> [2]:[0]:[48]:[00:50:56:b5:2e:5b]:[32]:[22.1.1.3]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[1.1.1.1]
                    1.1.1.1                                0 6500 i
Route Distinguisher: as2 6500:200

*> [2]:[0]:[48]:[00:50:56:b5:d8:2c]
                    1.1.1.1                                0 6500 i
*> [2]:[0]:[48]:[00:50:56:b5:d8:2c]:[32]:[23.1.1.3]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[1.1.1.1]
                    1.1.1.1                                0 6500 i
*> [3]:[0]:[32]:[2.2.2.2]
                    2.2.2.2                            32768 i
Route Distinguisher: as2 6500:10004

*> [5]:[0]:[24]:[22.1.1.0]
                    2.2.2.2                  0         32768 i
*  [5]:[0]:[24]:[22.1.1.0]
                    1.1.1.1                  0             0 6500 i
*> [5]:[0]:[24]:[23.1.1.0]
                    1.1.1.1                  0             0 6500 i

Displayed 10 out of 10 total prefixes

root@dev:~/frr# bridge fdb show | grep "00:50:56:b5:49:e8"
00:50:56:b5:49:e8 dev vlan100 master b100
root@dev:~/frr# ip neighbor show | grep 22.1.1.4
22.1.1.4 dev b100 lladdr 00:50:56:b5:49:e8 STALE
root@dev:~/frr#
@qlyoung
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qlyoung commented Dec 17, 2018

@karamalla0406 - Before what? After what? Is there some companion code to this? Was there a PR associated with this?

I understand if you are using the issue tracker to track your own work but the issue descriptions still need to be intelligible - as it stands this is only useful to you. I would appreciate it if you could update this issue with some more information.

@qlyoung qlyoung added the ? Needs more information. label Dec 17, 2018
@qlyoung qlyoung closed this as completed Apr 11, 2019
@lkrishnamoor
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I dont think the bug exists anymore in the master. Please check the logs below

Type2 route is advertised using default rd

evpn_r1# sh bgp l2vpn evpn route
   Network          Next Hop            Metric LocPrf Weight Path
Route Distinguisher: 203.0.113.1:3
*> [2]:[0]:[48]:[be:fb:52:d0:04:28]
                    203.0.113.1                        32768 I >> Notice that this prefix is advertised in both cases (manual rd and auto rd)
*> [3]:[0]:[32]:[203.0.113.1]
                    203.0.113.1                        32768 i
Route Distinguisher: 203.0.113.2:3
*> [2]:[0]:[48]:[ea:ba:11:1c:81:99]
                    203.0.113.2                            0 200 i
*> [3]:[0]:[32]:[203.0.113.2]
                    203.0.113.2                            0 200 i
 
Displayed 4 prefixes (4 paths)

Type2 route is advertised using manual rd

evpn_r1(config)# router bgp 100
evpn_r1(config-router)# address-family l2vpn evpn
evpn_r1(config-router-af)# vni 100
evpn_r1(config-router-af-vni)# rd 345:345
evpn_r1(config-router-af-vni)# end
evpn_r1# sh bgp l2vpn evpn route
   Network          Next Hop            Metric LocPrf Weight Path
Route Distinguisher: 345:345
*> [2]:[0]:[48]:[be:fb:52:d0:04:28]
                    203.0.113.1                        32768 i
*> [3]:[0]:[32]:[203.0.113.1]
                    203.0.113.1                        32768 i
Route Distinguisher: 203.0.113.2:3
*> [2]:[0]:[48]:[ea:ba:11:1c:81:99]
                    203.0.113.2                            0 200 i
*> [3]:[0]:[32]:[203.0.113.2]
                    203.0.113.2                            0 200 i
 
Displayed 4 prefixes (4 paths)

At neighbor, type2 route has new rd.

evpn_r2# sh bgp l2vpn evpn route
BGP table version is 2, local router ID is 203.0.113.2
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
EVPN type-2 prefix: [2]:[EthTag]:[MAClen]:[MAC]:[IPlen]:[IP]
EVPN type-3 prefix: [3]:[EthTag]:[IPlen]:[OrigIP]
EVPN type-4 prefix: [4]:[ESI]:[IPlen]:[OrigIP]
EVPN type-5 prefix: [5]:[EthTag]:[IPlen]:[IP]
 
   Network          Next Hop            Metric LocPrf Weight Path
Route Distinguisher: 345:345
*> [2]:[0]:[48]:[be:fb:52:d0:04:28]
                    203.0.113.1                            0 100 i
*> [3]:[0]:[32]:[203.0.113.1]
                    203.0.113.1                            0 100 i
Route Distinguisher: 203.0.113.2:3
*> [2]:[0]:[48]:[ea:ba:11:1c:81:99]
                    203.0.113.2                        32768 i
*> [3]:[0]:[32]:[203.0.113.2]
                    203.0.113.2                        32768 i
 
Displayed 4 prefixes (4 paths)

Unconfigure rd

evpn_r1(config)# router bgp 100
evpn_r1(config-router)# address-family l2vpn evpn
evpn_r1(config-router-af)# vni 100
evpn_r1(config-router-af-vni)# no rd
evpn_r1(config-router-af-vni)# end

Type2 rd advertised with default

evpn_r1# sh bgp l2vpn evpn route
   Network          Next Hop            Metric LocPrf Weight Path
Route Distinguisher: 203.0.113.1:3
*> [2]:[0]:[48]:[be:fb:52:d0:04:28]
                    203.0.113.1                        32768 i
*> [3]:[0]:[32]:[203.0.113.1]
                    203.0.113.1                        32768 i
Route Distinguisher: 203.0.113.2:3
*> [2]:[0]:[48]:[ea:ba:11:1c:81:99]
                    203.0.113.2                            0 200 i
*> [3]:[0]:[32]:[203.0.113.2]
                    203.0.113.2                            0 200 i
 
Displayed 4 prefixes (4 paths)
evpn_r1#

Type2 rd received with default

evpn_r2# sh bgp l2vpn evpn route
   Network          Next Hop            Metric LocPrf Weight Path
Route Distinguisher: 203.0.113.1:3
*> [2]:[0]:[48]:[be:fb:52:d0:04:28]
                    203.0.113.1                            0 100 i
*> [3]:[0]:[32]:[203.0.113.1]
                    203.0.113.1                            0 100 i
Route Distinguisher: 203.0.113.2:3
*> [2]:[0]:[48]:[ea:ba:11:1c:81:99]
                    203.0.113.2                        32768 i
*> [3]:[0]:[32]:[203.0.113.2]
                    203.0.113.2                        32768 i
 
Displayed 4 prefixes (4 paths)

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