EESky
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Cannot ping layer 3 switch
Hi Expert
The topology and config are below. R3 is layer 3 switch, R2 is layer 2 switch, and R1 is PC
R1(PC) can ping 12.0.0.2 and 12.0.0.3, but cannot ping 34.0.0.3. R2(layer 2 switch) can ping 34.0.0.3
Why cannot R1 ping 34.0.0.3 ? After I added command "ip routing" in R2, R2 became layer 3 switch and R3 can ping 34.0.0.3 Thank you
==========================
R3#Show run
interface FastEthernet1/0
switchport mode trunk
no ip address
!
interface FastEthernet1/1
switchport access vlan 40
no ip address
!
!
interface Vlan10
ip address 12.0.0.3 255.255.255.0
!
interface Vlan40
ip address 34.0.0.3 255.255.255.0
==========================
R2#sh run
no ip routing
!
!
interface FastEthernet1/0
switchport mode trunk
no ip address
!
interface FastEthernet1/1
switchport access vlan 10
no ip address
!
!
interface Vlan10
ip address 12.0.0.2 255.255.255.0
no ip route-cache
!
!
interface Vlan40
ip address 34.0.0.2 255.255.255.0
no ip route-cache
!
ip default-gateway 34.0.0.3
no ip http server
ip classless
========================
R1(PC) ip address 12.0.0.1 255.255.255.0
The topology and config are below. R3 is layer 3 switch, R2 is layer 2 switch, and R1 is PC
R1(PC) can ping 12.0.0.2 and 12.0.0.3, but cannot ping 34.0.0.3. R2(layer 2 switch) can ping 34.0.0.3
Why cannot R1 ping 34.0.0.3 ? After I added command "ip routing" in R2, R2 became layer 3 switch and R3 can ping 34.0.0.3 Thank you
==========================
R3#Show run
interface FastEthernet1/0
switchport mode trunk
no ip address
!
interface FastEthernet1/1
switchport access vlan 40
no ip address
!
!
interface Vlan10
ip address 12.0.0.3 255.255.255.0
!
interface Vlan40
ip address 34.0.0.3 255.255.255.0
==========================
R2#sh run
no ip routing
!
!
interface FastEthernet1/0
switchport mode trunk
no ip address
!
interface FastEthernet1/1
switchport access vlan 10
no ip address
!
!
interface Vlan10
ip address 12.0.0.2 255.255.255.0
no ip route-cache
!
!
interface Vlan40
ip address 34.0.0.2 255.255.255.0
no ip route-cache
!
ip default-gateway 34.0.0.3
no ip http server
ip classless
========================
R1(PC) ip address 12.0.0.1 255.255.255.0
SOLUTION
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ASKER
If R1(PC) set default-gateway as 12.0.0.2, should the PC be able to ping 34.0.0.3 ?
SOLUTION
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ASKER
Yes, I also think so. but in the previous test where I set default-gateway as 12.0.0.2 in PC, the PC could not ping 34.0.0.3. After you posted your first comment, I changed the default-gate to 34.0.0.3 or 34.0.0.2, and then the PC is able to ping 34.0.0.3
I tried these several time. and i got the same result. i do not know why
I tried these several time. and i got the same result. i do not know why
SOLUTION
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ASKER
Thank you,
ASKER