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 (18.104.22.168). 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
switchport trunk allowed vlan none
switchport mode trunk
service instance 333 ethernet
service-policy input CORPORATE_IN_10MB
service-policy output CORPORATE_OUT_10MB
ip address 22.214.171.124 255.255.255.248
#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
Maximum path: 4
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.
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 126.96.36.199 255.255.255.248 and static route 0.0.0.0 0.0.0.0 188.8.131.52
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...