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Ping not response

2020-07-04, 23:26 PM



I have two Switch Lenovo NE1032 with firmware


The Management response ping from external source, but the switch when running ping to server show me the message


connect: Network is unreachable


The config of management is the following.


interface mgmt0

no switchport

vrf member management

no ip address dhcp

ip address

ip address default




SW_Lenovo1#show running-config ip route


ip route



SW_Lenovo1#show  ip route

Codes: C - connected, S - static, R - RIP, B - BGP, BE - BGP-EVPN

      O - OSPF, IA - OSPF inter area, D - DHCP

      N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

      E1 - OSPF external type 1, E2 - OSPF external type 2

      * - candidate default


IP Route Table for VRF "default"



Now in the running config show


vrf context management

ip route



Any idea because show the messages Network is unreachable.










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Re:Ping not response

2020-07-05, 3:54 AM

The NE1032 runs CNOS, which defaults to two separate VRFs (Virtual Routing and Forwarding instances). The default VRF is inband and when you run commands without defining the VRF, it will reference the inband default VRF. To reference the OOB (RJ45) management port, you have to specifically call out the VRF. So if you want to issue a ping that uses the OOB port (which is in the management vrf) you have to tell it to use that VRF. For example, "ping vrf man". Same with other commands like "show ip route" use "show ip route vrf man" or "show ip route vrf all".


And each VRF has its own default gateway and routing table, so if you issue the global command "ip route", that is for the "default "VRF (inband) so you do not have a default route configured on your OOB management VRF. To set the default gateway for the OOB management VRF network you use the command "vrf context man" and then issue the "ip route" command to put it in to the proper VRF for OOB management, which is what you have done


Lastly, the CNOS code actually supports many VRFs, but defaults to two VRFs (the "default" vrf (inband) and the "management" vrf (OOB RJ45 port)). 


Hope this helps.


Thanks, Matt

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