Hi there,
I have a stack "A" of 2 3750X newly installed having data vlan and a voice vlan. Just for temporary usage, we had connected a 3750 standalone switch "B" on the port G1/0/27 of the stack.
B was programmed to be an access port carrying just the Data vlan. Switch A's port was also prgrammed the same.
But whats happening is that local users on the stack cannot ping their own data vlan gateway which locally on the stack switch. Whereas the users in the same vlan but on the standaone switch can reach this gateway.
Ports Config on the stack:
Switch_A#sh run | begin GigabitEthernet1/0/25
interface GigabitEthernet1/0/25
description ***** Standard Interface configuration to Client PC & Phone *****
switchport access vlan 240
switchport trunk encapsulation dot1q
switchport trunk native vlan 240
switchport mode access
switchport voice vlan 651
no logging event link-status
speed 1000
duplex full
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
queue-set 2
priority-queue out
no snmp trap link-status
mls qos trust cos
auto qos voip trust
no mdix auto
flowcontrol receive on
spanning-tree portfast
service-policy input PM-SET-DSCP
!
interface GigabitEthernet1/0/26
description ***** Standard Interface configuration to Client PC & Phone *****
switchport access vlan 240
switchport trunk encapsulation dot1q
switchport trunk native vlan 240
switchport mode access
switchport voice vlan 651
no logging event link-status
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
queue-set 2
priority-queue out
no snmp trap link-status
mls qos trust cos
auto qos voip trust
no mdix auto
flowcontrol receive on
spanning-tree portfast
service-policy input PM-SET-DSCP
!
interface GigabitEthernet1/0/27
description ***** Temporary Uplink*****
switchport access vlan 240
switchport trunk encapsulation dot1q
switchport trunk native vlan 240
switchport mode access
switchport voice vlan 651
no logging event link-status
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
queue-set 2
priority-queue out
no snmp trap link-status
mls qos trust cos
auto qos voip trust
no mdix auto
flowcontrol receive on
spanning-tree portfast
service-policy input PM-SET-DSCP
I tried doing debug on arp frames and could see the following:
000612: Aug 23 15:07:34.809 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
000613: Aug 23 15:07:46.771 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
000614: Aug 23 15:07:49.799 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
000615: Aug 23 15:07:55.830 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
000616: Aug 23 15:08:03.120 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
000617: Aug 23 15:08:04.328 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
000618: Aug 23 15:08:06.089 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
000619: Aug 23 15:08:06.291 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
000620: Aug 23 15:08:07.314 WST: IPARP_TRACK: ARP tableid(0) 10.42.64.43 Vlan240 mode(1) modified.
Any suggestions?
