Re: Unable to ping from backup device - Page 2

rizwankkl · ‎03-15-2022

Hi,

Hope everyone is keeping well.

Attached please find a network topology.

I can ping from Admin switch to Routerone but not able ping from Inbound to router.

please find the config, kindly help with correct config. The idea is to do a failover design if Admin switch is down.

Router Config

interface Ethernet0/0
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly
full-duplex
!
interface Ethernet1/0
ip address dhcp
ip nat outside
ip virtual-reassembly
full-duplex
!
interface Ethernet1/1
ip address 192.168.10.1 255.255.255.0
ip nat inside
ip virtual-reassembly
full-duplex
!
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
ip nat inside source list 1 interface Ethernet0/0 overload
ip nat inside source list 2 interface Ethernet1/1 overload
!
access-list 1 permit any
access-list 2 permit any
no cdp log mismatch duplex

Admin Switch

ip cef
ip name-server 8.8.8.8
!
ip tcp synwait-time 5
!
!
interface FastEthernet0/0
ip address 192.168.10.2 255.255.255.0
duplex auto
speed auto
standby 1 ip 192.168.10.3
standby 1 priority 110
standby 1 preempt
standby 1 track FastEthernet1/0
!
interface FastEthernet1/0
switchport mode trunk
!
interface Vlan1
ip address 192.168.1.2 255.255.255.0
!
!
ip default-gateway 192.168.1.1
no ip http server
no ip http secure-server
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.168.1.1
ip route 0.0.0.0 0.0.0.0 192.168.10.1

no cdp log mismatch duplex
!
control-plane
!

Inbound SW configs

ip name-server 8.8.8.8
!
ip tcp synwait-time 5
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.10.4 255.255.255.0
duplex auto
speed auto
standby 1 ip 192.168.10.3
standby 1 preempt
standby 1 track FastEthernet0/0
!
interface FastEthernet1/0
switchport mode trunk
!
!
interface Vlan1
ip address 192.168.1.4 255.255.255.0
!
!
ip default-gateway 192.168.1.1
no ip http server
no ip http secure-server
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.168.1.1
ip route 0.0.0.0 0.0.0.0 192.168.10.1

!
no cdp log mismatch duplex
!
control-plane

Jon Marshall · ‎03-15-2022

Georg

Not sure how this is going work.

You have used 192.168.10.1 as the HSRP VIP but it is also the IP on one of the router interfaces, you are tracking both interfaces but unless you take an action eg. change the HSRP priority nothing is going to happen plus if that really is a direct connection between the switches there is no point in using HSRP at all.

Jon

Georg Pauwen · ‎03-15-2022

Hi Jon,

not good. You are right. If you can get this to work, change whatever needs to be changed. I don't really understand what OP is trying to accomplish anyway, since the switch configs he posted are a mix of layer 2 and layer 3 commands, and there is no information on the downstream networks.

In addition, the link between Inbound and Admin uses the 192.168.10.0 network, and interface Ethernet1/1 has the same subnet (but the connecting Vlan 1 on Inbound has 192.168.1.0, so there is no connectivity anyway). I did not see that at first. I guess clarification from OP is required.

Jon Marshall · ‎03-15-2022

To be honest I don't really know what to change either because I am as unclear as you as to what it is the OP is trying to achieve.

It may just be the way the diagram has been done but I am struggling to follow it myself.

Jon