Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

CISCO ME3600X ARP ISSUE

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.

1 REPLY
New Member

CISCO ME3600X ARP ISSUE

Sorry if i didn't make it clear. There is ip connectivity when boot up the patton gateway. The problem appears 20 minutes after when patton sends the arp request. Also the traffic from patton is untagged that’s why encapsulation untagged is applied under service instance. Patton has ip address 46.245.137.3 255.255.255.248 and static route 0.0.0.0 0.0.0.0 46.245.137.1

Any ideas?

228
Views
0
Helpful
1
Replies
CreatePlease to create content