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Topics - Rod Hanien

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#1
General Support / Driver CISCO-NEXUS for N9K-C93240YC-FX2 / Driver GENERIC for N9K-C93360YC-FX2
January 04, 2024, 05:27:15 PM
Hi,

The Driver associated  with a Cisco Nexus N9K-C93240YC-FX2  is CISCO-NEXUS but  for a Cisco Nexus N9K-C93360YC-FX2 it is the GENERIC driver:

Class=Node
Status=Normal
Node Type=PHYSICAL
Vendor=Cisco Systems, Inc.
Product name=N9K-C93360YC-FX2
System Description=Cisco NX-OS(tm) Nexus9000 C93360YC-FX2, Software (NXOS 64-bit), Version 10.3(3), RELEASE SOFTWARE Copyright (c) 2002-2023 by Cisco Systems, Inc. Compiled 4/30/2023 12:00:00
SNMP Object ID=.1.3.6.1.4.1.9.12.3.1.3.2237
Driver=GENERIC

Class=Node
Status=Normal
Node Type=PHYSICAL
Vendor=Cisco Systems, Inc.
Product name=N9K-C93240YC-FX2
System Description=Cisco NX-OS(tm) Nexus9000 C93240YC-FX2, Software (NXOS 64-bit), Version 10.3(3), RELEASE SOFTWARE Copyright (c) 2002-2023 by Cisco Systems, Inc. Compiled 4/30/2023 12:00:00
SNMP Object ID=.1.3.6.1.4.1.9.12.3.1.3.2010
Driver=CISCO-NEXUS

I know i can solve the probleme using "Custom Attributes"  but if there is another way ...


Thanks,
Fred
#2
General Support / Topology on Cisco Nexus
October 19, 2022, 09:54:15 AM
Hi,

I have a  problem with the topology.
There are three links between two nexus 93240, 10.60.3.3 and 10.60.3.4:
- a port-channel (VPC Peer-Link) whith 2 links:
# show interface port-channel 22 | i Members
  Members in this channel: Eth1/49, Eth1/60
- a Keep-alive on eth 1/48


10.60.3.3# show cdp neighbors
...
Device-ID          Local Intrfce  Hldtme Capability  Platform      Port ID
10.60.3.4
                    Eth1/48        167    R S s     N9K-C93240YC- Eth1/48       
10.60.3.4
                    Eth1/49        167    R S I s   N9K-C93240YC- Eth1/49       
...

10.60.3.4
                    Eth1/60        167    R S I s   N9K-C93240YC- Eth1/60       



10.60.3.4# sh cdp n
...
Device-ID          Local Intrfce  Hldtme Capability  Platform      Port ID
10.60.3.3
                    Eth1/48        136    R S s     N9K-C93240YC- Eth1/48       
10.60.3.3
                    Eth1/49        136    R S I s   N9K-C93240YC- Eth1/49       
...
10.60.3.3
                    Eth1/60        136    R S I s   N9K-C93240YC- Eth1/60  


Poll Topology on 10.60.3.3 :
[18.10.2022 15:18:40] **** Poll request sent to server ****
[18.10.2022 15:18:40] Poll request accepted, waiting for outstanding polling requests to complete...
[18.10.2022 15:18:41] Starting topology poll of node 10.60.3.3
[18.10.2022 15:18:41] VLAN list successfully retrieved from node
[18.10.2022 15:18:41] Switch forwarding database retrieved
[18.10.2022 15:18:41] Link layer topology retrieved (5 connections found)
[18.10.2022 15:18:41] Updating peer information on interfaces
[18.10.2022 15:18:41]    Local interface Ethernet1/49 linked to remote interface 10.60.3.4:Ethernet1/49
...
[18.10.2022 15:18:41]    Local interface Ethernet1/60 linked to remote interface 10.60.3.4:Ethernet1/60
[18.10.2022 15:18:41]    Local interface port-channel22 linked to remote interface 10.60.3.4:Ethernet1/6
....
[18.10.2022 15:18:41] Link layer topology processed
[18.10.2022 15:18:41] Finished topology poll of node 10.60.3.3
[18.10.2022 15:18:41] **** Poll completed successfully ****


1) The link "10.60.3.4:Ethernet1/6" is wrong :
10.60.3.4# sh int et 1/6
Ethernet1/6 is down (XCVR not inserted)
admin state is up, Dedicated Interface
...

This interface on 10.60.3.4 never was up.

2) No link between ports Ethernet1/48


Poll Topology on 10.60.3.4 :
[18.10.2022 17:05:38] **** Poll request sent to server ****
[18.10.2022 17:05:38] Poll request accepted, waiting for outstanding polling requests to complete...
[18.10.2022 17:05:38] Starting topology poll of node 10.60.3.4
[18.10.2022 17:05:38] VLAN list successfully retrieved from node
[18.10.2022 17:05:38] Switch forwarding database retrieved
[18.10.2022 17:05:38] Link layer topology retrieved (5 connections found)
[18.10.2022 17:05:38] Updating peer information on interfaces
[18.10.2022 17:05:38]    Local interface Ethernet1/49 linked to remote interface 10.60.3.3:Ethernet1/49
...
[18.10.2022 17:05:38]    Local interface Ethernet1/60 linked to remote interface 10.60.3.3:Ethernet1/60
...
[18.10.2022 17:05:38] Link layer topology processed
[18.10.2022 17:05:38] Finished topology poll of node 10.60.3.4
[18.10.2022 17:05:38] **** Poll completed successfully ****

1) No link between ports Ethernet1/48




Object Details / Interfaces of 10.30.3.3:
   
247485  port-channel22    161 (ieee8023adLag)  369098773               9216 80 Gbps port-channel22 18:59:F5:82:D8:A8  1, 500, 666 10.60.3.4 Ethernet1/6  18:59:F5:82:AE:05 10.60.3.4 STP UP UP UP Normal
247537  Ethernet1/49              6 (ethernetCsmacd) 436232192 1/1/0/49 9216 40 Gbps Ethernet1/49    18:59:F5:82:D8:A8  1, 500, 666 10.60.3.4 Ethernet1/49 18:59:F5:82:AE:30 10.60.3.4 CDP UP UP UP Normal
247548  Ethernet1/60              6 (ethernetCsmacd) 436237824 1/1/0/60 9216 40 Gbps Ethernet1/60    18:59:F5:82:D8:B3  1, 500, 666 10.60.3.4 Ethernet1/60 18:59:F5:82:AE:3B 10.60.3.4 CDP UP UP UP Normal          
247536  Ethernet1/48              6 (ethernetCsmacd) 436231680 1/1/0/48 1500   1 Gbps Ethernet1/48    18:59:F5:82:D8:A7                                                                                                                UP UP    UP Normal  



Object Details / Interfaces of 10.30.3.4:

247563    Ethernet1/6      6 (ethernetCsmacd) 436210176 1/1/0/6    1500 25 Gbps Ethernet1/6    18:59:F5:82:AE:05  1            10.60.3.3 port-channel22 18:59:F5:82:D8:A8 10.60.3.3 STP UP DOWN DOWN Normal 
247606    Ethernet1/49      6 (ethernetCsmacd) 436232192 1/1/0/49    9216 40 Gbps Ethernet1/49   18:59:F5:82:AE:30  1, 500, 666  10.60.3.3 Ethernet1/49   18:59:F5:82:D8:A8 10.60.3.3 CDP UP UP UP Normal 
247617    Ethernet1/60      6 (ethernetCsmacd) 436237824 1/1/0/60    9216 40 Gbps Ethernet1/60   18:59:F5:82:AE:3B  1, 500, 666  10.60.3.3 Ethernet1/60   18:59:F5:82:D8:B3 10.60.3.3 CDP UP UP UP Normal 
247605    Ethernet1/48      6 (ethernetCsmacd) 436231680 1/1/0/48 1500  1 Gbps Ethernet1/48   18:59:F5:82:AE:2F                                                                                                                        UP UP UP Normal 
247554    port-channel22  161 (ieee8023adLag)  369098773          9216 80 Gbps port-channel22 18:59:F5:82:AE:30  1, 500, 666                                                                                                 UP UP UP Normal 
   
The stange link appear whith STP topology.

I tried to delete the two nodes but no change.

With another infrastructure, if the root bridge is connected thougth the fisrt Nexus,  the ghost link on eth1/6  appear on it.

SPANNING-TREE information:
10.60.3.3# sh span int po 22 detail
 Port 4117 (port-channel22, vPC Peer-link) of MST0000 is root forwarding
   Port path cost 250, Port priority 128, Port Identifier 128.4117
   Designated root has priority 28672, address 0008.e3ff.fc04
   Designated bridge has priority 0, address 1859.f582.adff
   Designated port id is 128.4117, designated path cost 0
   Timers: message age 57, forward delay 0, hold 0
   Number of transitions to forwarding state: 0
   The port type is network
   Link type is point-to-point by default, Internal
   PVST Simulation is enabled by default
   BPDU: sent 43755, received 43755

 Port 4117 (port-channel22, vPC Peer-link) of MST0001 is root forwarding
   Port path cost 250, Port priority 128, Port Identifier 128.4117
   Designated root has priority 28673, address 0008.e3ff.fc04
   Designated bridge has priority 1, address 1859.f582.adff
   Designated port id is 128.4117, designated path cost 30450
   Timers: message age 57, forward delay 0, hold 0
   Number of transitions to forwarding state: 1
   The port type is network
   Link type is point-to-point by default, Internal
   PVST Simulation is enabled by default
   BPDU: sent 43755, received 43755


1859.f582.adff is the MAC address use by 10.60.3.4 for level 3 interfaces (used for STP topology ?):

10.60.3.4# sh int et 1/48 | i add
  Hardware: 100/1000/10000/25000 Ethernet, address: 1859.f582.adff (bia 1859.f582.ae2f)
10.60.3.4# sh int vlan 1 | i add
  Hardware is EtherSVI, address is  1859.f582.adff
10.60.3.4# sh int vlan 666 | i add
  Hardware is EtherSVI, address is  1859.f582.adff



Nexus9000 C93240YC-FX2 Chassis NXOS: version 10.3(1)
NetXMS Management Console  Version 4.1.420

I do not understand what is happening.


Thanks.
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