Hello everyone
I am facing a issue with our Metro Ethernet switch. I have directly connected a Patton SmartNode 4528 Voip Gateway Router to the Cisco Switch which is the Default Gateway (46.245.137.1). Patton GW every 20 minutes sends an ARP request asking for default gateways mac address.
Cisco ME3600X is not responding to Patton ARP request so Patton is losing ip connectivity since is thinking that Default Gateway is down.
Routing Protocol is ISIS. I have made the some tests with a Catalyst 2960G which is responding to Patton ARP request.
Switch Port configuration
interface GigabitEthernet0/23
switchport trunk allowed vlan none
switchport mode trunk
load-interval 30
service instance 333 ethernet
encapsulation untagged
service-policy input CORPORATE_IN_10MB
service-policy output CORPORATE_OUT_10MB
bridge-domain 333
interface Vlan333
bandwidth 10000
ip address 46.245.137.1 255.255.255.248
load-interval 30
#show ip protocols
*** IP Routing is NSF aware ***
Routing Protocol is "isis"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Redistributing: static, isis
Address Summarization:
None
Maximum path: 4
Passive Interface(s):
Vlan333
Loopback0
Cisco ME3600X is running IOS me360x-universalk9-mz.153-1.S1.bin
I have attached 2 wireshark traces one from 3600 and one from 2960.
Regards
Antonis.