The easiest way is to start pinging from the PC to the destination (please specify), if that fails ping its default gateway (10.1.1.254)
if this works then go to the switch and ping the same destination but from a source ip (10.1.1.254 ) that was closest for the PC IP address.
Then use this step by step approach to find out where the break is. at that point check the routing table for the missing route
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If my post was useful accept solution and/or give kudos.
Any opinions expressed here are solely my own and not necessarily that of HPE or Aruba.
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Original Message:
Sent: Mar 07, 2023 11:43 AM
From: JohnChurch
Subject: HELP... Can't PING switch or pc from router (& vice versa)
Hello All,
I am fairly new to networking. I am trying to setup a simple topology that includes 1 - CORE, 1 - DISTCORE, 1 SWITCH, 1 end device (PC).
I am using OSPF for the routing on the L3 switches. I can ping from either router to the other just fine, however, I can not ping from the SWITCH to any of the routers, but I CAN ping from the SWITCH to the end device (PC). I am losing my route connection at the SWITCH. HELP!
I guess I need to create a static IP route from the CORE > DISTCORE > L2 SWITCH > END DEVICE (PC)? I apologize for the ignorance.
CORE - config
ssh server vrf mgmt
vlan 1,10,999,3024
trunk-dynamic-vlan-include
interface mgmt
no shutdown
ip dhcp
interface 1/1/1
no shutdown
no routing
vlan access 3024
interface vlan 3024
ip address 10.254.253.25/30
ip ospf 1 area 0.0.0.0
ip route 10.1.0.0/16 10.254.243.3 <-- I am not sure this is even correct. I found this on another config.
!
!
!
!
!
router ospf 1
router-id 1.1.1.1
area 0.0.0.0
area 0.0.0.1
area 0.0.0.2
area 0.0.0.3
https-server vrf mgmt
DISTCORE - config
ssh server vrf mgmt
vlan 1,10,999,3024
trunk-dynamic-vlan-include
interface mgmt
no shutdown
ip dhcp
interface 1/1/1
no shutdown
no routing
vlan trunk native 999
vlan trunk allowed 1,10,999,3024
interface 1/1/2
no shutdown
no routing
vlan access 3024
interface vlan 3024
ip address 10.254.253.26/30
ip ospf 1 area 0.0.0.0
!
!
!
!
!
router ospf 1
router-id 2.2.2.2
area 0.0.0.0
area 0.0.0.0 range 10.55.0.0/16 type inter-area
https-server vrf mgmt
SWITCH - config
ssh server vrf mgmt
vlan 1,10,999
trunk-dynamic-vlan-include
interface mgmt
no shutdown
ip dhcp
interface 1/1/2
no shutdown
no routing
vlan trunk native 999
vlan trunk allowed all
interface 1/1/6
no shutdown
no routing
vlan access 10
interface vlan 10
ip address 10.1.1.254/24
interface vlan 999
description TRUNK
ip route 0.0.0.0/0 10.55.100.1
PC - config
10.1.1.10 255.255.255.0 gateway 10.1.1.254