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ss1
Beginner
Beginner

Nexus 9396px: Unable to make xconnect work

Hello,

I'm trying to do a xconnect between two 10G ports on two different Nexus 9396PX switches, however, unable to do it in spite of following this document for guidelines: https://www.cisco.com/c/en/us/support/docs/switches/nexus-9000-series-switches/213958-nexus-9000-vxlan-xconnect-configuration.html

 

So far I have completed the steps for enabling and configuring the ngoam feature as recommended on the above link, however I'm struggling to complete the xconnect peering due to the following issue:

# show ngoam xconnect session 3092
Vlan ID: 3092
Peer IP: 10.128.164.139  VNI : 9003092
State: Heartbeat loss, 
Last state update: 11/29/2021 17:21:00.321
Local interface: Eth1/16  State:  ERR
Local vpc interface Unknown  State:  DOWN
Remote interface: Unknown  State:  DOWN
Remote vpc interface: Unknown  State:  DOWN

The heartbeat loss is also seen on the peer switch, however all other diagnostic effort don't seem to show any issue evidence:

# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 5, Local Router ID is 10.128.44.182
Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best
Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected
Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup, 2 - best2

   Network            Next Hop            Metric     LocPrf     Weight Path
Route Distinguisher: 10.128.44.182:35859    (L2VNI 9003092)
*>l[3]:[0]:[32]:[10.128.144.182]/88
                      10.128.144.182                    100      32768 i
*>i[3]:[0]:[32]:[10.128.164.139]/88
                      10.128.164.139                    100          0 i

Route Distinguisher: 10.128.64.139:35859
* i[3]:[0]:[32]:[10.128.164.139]/88
                      10.128.164.139                    100          0 i
*>i                   10.128.164.139                    100          0 i


# show nve peers
Interface Peer-IP                                 State LearnType Uptime   Router-Mac       
--------- --------------------------------------  ----- --------- -------- -----------------
nve1      10.128.164.139                          Up    CP        17:32:39 n/a              

# show nve vni 9003092
Codes: CP - Control Plane        DP - Data Plane          
       UC - Unconfigured         SA - Suppress ARP        
       SU - Suppress Unknown Unicast 
       Xconn - Crossconnect      
       MS-IR - Multisite Ingress Replication
 
Interface VNI      Multicast-group   State Mode Type [BD/VRF]      Flags
--------- -------- ----------------- ----- ---- ------------------ -----
nve1      9003092  225.30.9.2        Up    CP   L2 [3092]          Xconn 

# show ip bgp all summary 
BGP summary information for VRF default, address family IPv4 Unicast

BGP summary information for VRF default, address family IPv6 Unicast

BGP summary information for VRF default, address family L2VPN EVPN
BGP router identifier 10.128.44.182, local AS number xxxxxxx
BGP table version is 5, L2VPN EVPN config peers 2, capable peers 2
3 network entries and 4 paths using 732 bytes of memory
BGP attribute entries [3/516], BGP AS path entries [0/0]
BGP community entries [0/0], BGP clusterlist entries [2/8]

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
10.128.2.183    4 xxxxxxx   14037    1058        5    0    0 17:33:31 1         
10.128.2.184    4 xxxxxxx   14033    1058        5    0    0 17:33:29 1         
# show running-config bgp 
version 9.3(8) Bios:version 07.69 
feature bgp

router bgp xxxxxxx
  router-id 10.128.44.182
  address-family l2vpn evpn
    maximum-paths 64
    maximum-paths ibgp 64
  neighbor 10.128.2.183
    remote-as xxxxxxx
    description SPINEswitch1
    update-source loopback0
    address-family l2vpn evpn
      send-community
      send-community extended
  neighbor 10.128.2.184
    remote-as xxxxxxx
    description SPINEswitch2
    update-source loopback0
    address-family l2vpn evpn
      send-community
      send-community extended
evpn
  vni 9003092 l2
    rd auto
    route-target import auto
    route-target export auto

PIM-RP has been also configured all along the path, however, not sure about the following:
- the 9396px is not on the xconnect supported list, however, the 9372px is, I thought they are almost identical by means of supported features, were I wrong in assuming this?
- do I need to enable ngoam all along the spine paths between all switches, I didn't do it yet, the spines are BGP RR, PIM and OSPF routers so far?
- last but not least, is there any tcam carving necessary in order to make it work?

 

Any ideas on how to make it work will be appreciated greatly.

Thank you.

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