Cannot ping directly connected gateway from switch and vice versa

[uspstech]

I have a ISR4321 -> 2960X -> 2960+

I can ping the 2960+ no problem but I cannot ping the 2960X from the router, and likewise cannot ping the router from the 2960X. I have checked configs, port errors etc and can't find anything wrong. configs below.

Router config:

interface GigabitEthernet0/0/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
negotiation auto

interface GigabitEthernet0/0/0.1
encapsulation dot1Q 1 native
ip address 192.168.0.193 255.255.255.192
no ip redirects
no ip unreachables
no ip proxy-arp
ip pim sparse-mode
no cdp enable

2960X config:

interface Vlan1
ip address 192.168.0.197 255.255.255.192

ip default-gateway 192.168.0.193

2960+ Config:

interface Vlan1
ip address 192.168.0.199 255.255.255.192

ip default-gateway 192.168.0.193

Any ideas appreciated.

Thanks!

[Georg Pauwen]

Hello,

post the config of the 2960X. Is the interface connecting the 2960X to the router a trunk ?

[uspstech]

See attached. It is not a trunk but I have tried making it a trunk on the switch side and same difference. Would I need to explicitly make it a trunk on the router side? I have not tried that since the router is vendor controlled but I can call them if need be.

[Georg Pauwen]

Which interface on the 2960X is connnected to the router ?

Also, the 2960X is in VTP transparent mode, is that on purpose ?

[uspstech]

interface GigabitEthernet1/0/47
description ROUTER

Yes it is on purpose. We set them to transparent then manually configure the VLANs on each switch.

[Georg Pauwen]

Hello,

try:

interface GigabitEthernet1/0/47
description ROUTER

switchport mode trunk

spanning-tree portfast trunk

[uspstech]

Still no ping:

interface GigabitEthernet1/0/47
description ROUTER
switchport mode trunk
spanning-tree portfast trunk

[Georg Pauwen]

Hello,

post the output of 'show interfaces vlan 1' of the 2960X.

[uspstech]

Vlan1 is up, line protocol is up
Hardware is EtherSVI, address is 848a.8dbf.f5c0 (bia 848a.8dbf.f5c0)
Internet address is 192.168.0.197/26
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 1 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
307978 packets input, 21447937 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
32961 packets output, 2427573 bytes, 0 underruns
0 output errors, 2 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out

[Georg Pauwen]

Hello,

is this right ?

--> Internet address is 56.171.198.197/26

[uspstech]

Sorry ignore that, I edited the post. 192.168.0.197

[Georg Pauwen · Accepted solution]

Hello,

default interface Vlan1, reboot the switch, and configure the IP address again...

[uspstech]

That did it! pinging fine now! Thanks!!

[paul driver]

Hello

on 2960x

Int gig 1/0/47 set as a trunk