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Cisco Bug: CSCvu75595 - Route Leak - VXLAN EVPN - Attached-Export not flushed with host mobility

Last Modified

Sep 25, 2020

Products (65)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 3548-X Switch
  • Cisco Nexus 93600CD-GX Switch
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 92348GC-X Switch
  • Cisco Nexus 3636C-R Switch
  • Cisco Nexus 3548 Switch
  • Cisco Nexus 93108TC-FX Switch
  • Cisco Nexus 31108TC-V Switch
  • Cisco Nexus 92160YC-X Switch
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Known Affected Releases

9.3(4) 9.3(4.197)

Description (partial)

Symptom:
IP host mobility is not working in inter-vrf leaking scenario in VXLAN EVPN setup.
VRF-X : host A resides behind Leaf1
VRF-Y : route leaking using RT import from VRF-X

Move host A behind Leaf4 and now routing is broken in VRF-Y, attached-export entry is still seen:

10.26.11.202/32, ubest/mbest: 1/0, attached
    *via 10.26.11.202%VRF-X, Vlan1820, [190/0], 00:11:49, attached-export  >>>>>> problem as this entry should be removed once host moved from Leaf1
     via 10.222.22.201%default, [200/0], 00:00:08, bgp-65004, internal, tag 65004, segid: 300011 (Asymmetric) tunnelid: 0xade16c9 encap: VXLAN

Conditions:
inter-vrf routing leaking using RT Import/Export for VXLAN EVPN
Reported in release 9.3.4, however may not be limited to it, issue is under investigation
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Bug Details Include

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