No able to ping router ip from Layer 3 Switch

[richardt48]

Hi All,

Can anyone help me on the issue which i am running on GNS3.But I am not able to ping  gateway ip address from switch 

I Have Router 1 

Serial 1/0 ip address 192.168.10.1

Fa0/0 ip address 193.168.10.0

With Router on stick configuration

enable ip routing command on Switch ESW1

Router 1 is connected to LAN Switch network 10.10.10.0 through Fa0/1

Router 1 is configured EIGRP Protocol

But I am not able to ping default gateway ip address from switch 

OUTPUT

Router 1 ip route output

R1#sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

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

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

       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

       ia - IS-IS inter area, * - candidate default, U - per-user static route

       o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

D    194.168.10.0/24 [90/554496] via 193.168.10.2, 00:19:22, FastEthernet0/0

C    192.168.10.0/24 is directly connected, Serial1/0

C    193.168.10.0/24 is directly connected, FastEthernet0/0

C    10.0.0.0/8 is directly connected, FastEthernet0/1.10

R1#

R1#sh ip int brief

Interface IP-Address      OK? Method Status                Protocol

FastEthernet0/0 193.168.10.1    YES NVRAM  up                    up

Serial0/0 unassigned      YES NVRAM  administratively down down

FastEthernet0/1 unassigned      YES manual up                    up

FastEthernet0/1.10 10.10.10.1      YES manual up                    up

Serial0/1 unassigned      YES NVRAM  administratively down down

Serial1/0 192.168.10.1    YES NVRAM  up                    up

Serial1/1 unassigned      YES NVRAM  administratively down down

Serial1/2 unassigned      YES NVRAM  administratively down down

Serial1/3 unassigned      YES NVRAM  administratively down down

R1#

OUTPUT OF  SWITCH

ESW1#ping 10.10.10.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.10.10.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 84/97/136 ms

ESW1#ping 10.10.10.2               <------------------------------------------------------VLAN10 IP address

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms

ESW1#ping 192.16.10.1              <---------------------------Gateway ip address which is advertise by EIGRP on ROUTER1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.16.10.1, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

ESW1#show interface trunk

Port      Mode         Encapsulation  Status Native vlan

Fa1/0     on           802.1q         trunking      1

Port      Vlans allowed on trunk

Fa1/0     1-1005

Port      Vlans allowed and active in management domain

Fa1/0     1,10

Port      Vlans in spanning tree forwarding state and not pruned

Fa1/0     1,10

ESW1#

Can anyone help me plz

[Masoud Pourshabanian]

Hello,

Have you configured "IP default-gateway 10.10.10.1" on switch?

Please share your configuration on both swicth and router

Masoud

[paul driver]

Hello

This is from the switch and not a device off the switch correct?
It also looks like you have a subinterface on the router for vlan 10 so you can apply a trunk interface on the switch

Have you created a L3 interface on the switch for it to ping?

int vlan 10
ip address 10.10.10.2 255.255.255.0

int x/x
Description Port to router
switchport trunk encapsulation dot
switchport mode trunk
no shut

ip default-gateway 10.10.10.1

no ip routing

res
Paul

[richardt48]

Ty Paul.

I missed the command  No ip routing and now i am able to ping my EIGRP prefix .Which i have advertise on My R1 router.

Can you please let me know what does No ip routing does.I know on the L3 device if have configured no ip routing and set default-gateway it act has host device like PC.

LOG:

ESW1#ping 192.168.10.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 52/64/92 ms
ESW1#

[Masoud Pourshabanian]

Hello,

If ip routing is enabled ip default-gateway command is ignored

Masoud

[paul driver]

Hello

when you have ip routing enabled the switch will look in the routing table for prefixes not directly connected but see as your switch isn't performing any routing then it should be configured as a "host" device and provide it with a default-gateway for its next hop

lastly is you have ip routing and the default -gateway applied at the same time the default-gateway is ignored

Res

paul