[c-nsp] CISCO ME3600X ARP ISSUE

[Nick Hilliard]

Can't really tell much from the pcap files:

http://cloudshark.org/captures/ac6ed1c8470a
http://cloudshark.org/captures/fda45ed488b0

The timestamps don't overlap.

If it works and then stops working, that could be an arp/L2 cam timeout.
Make sure that the arp timer on the switch is configured to be lower than
the cam timer on your 2960.

me3600: show interfaces vlan 333 | i ARP
c2960: show mac address-table aging-time

Nick

On 03/07/2013 17:05, Antonis Vosdoganis wrote:
> Sorry if i didn't make it clear. There is ip connectivity when i 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
> 
> I am not in the office to send you the 2960 configuration but i will tomorrow.
> 
> I am attaching again the traces.
> 
> 
> 
> On Wed, Jul 3, 2013 at 6:15 PM, Aaron <aaron1 at gvtc.com
> <mailto:aaron1 at gvtc.com>> wrote:
> 
>     As Nick mentioned, given you are untagging on the patton side, since you
>     should be since you are untagged on the me3600 service instance 333...
> 
>     Go to the " Patton SmartNode 4528 Voip Gateway Router" and check it's ip
>     address, subnet mask and def gw .... make sure they are ...
> 
>     Ip address - ip address 46.245.137.2 or .3 or .4 or .5 or .6
>     Mask - 255.255.255.248
>     Def gw - 46.245.137.1
> 
>     Aaron
> 
> 
>     -----Original Message-----
>     From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net
>     <mailto:cisco-nsp-bounces at puck.nether.net>] On Behalf Of Nick
>     Hilliard
>     Sent: Wednesday, July 03, 2013 9:46 AM
>     To: Antonis Vosdoganis
>     Cc: cisco-nsp at puck.nether.net <mailto:cisco-nsp at puck.nether.net>
>     Subject: Re: [c-nsp] CISCO ME3600X ARP ISSUE
> 
>     On 03/07/2013 13:30, Antonis Vosdoganis wrote:
>     > 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.
> 
>     Hi Antonis,
> 
>     Your attachments didn't come through.  Can you post them on
>     http://cloudshark.org/ so that we can take a look?
> 
>     > Routing Protocol is ISIS. I have made the some tests with a Catalyst
>     > 2960G which is responding to Patton ARP request.
> 
>     ISIS has nothing to do with default gateways.
> 
>     You haven't provided enough configuration to determine what the problem is.
>      What vlan is the patton device connected to, and what are the port
>     configuration settings on the Catalyst 2960G for the ports which connect to
>     the ME3600 and the Patton device.
> 
>     If the patton device is on vlan 333 and the 2960G-ME3600X link is
>     configured
>     as a dot1q trunk on the 2960 side, then you need to use this on the ME3600X
>     side:
> 
>     --
>     interface GigabitEthernet0/23
>     switchport trunk allowed vlan none
>     switchport mode trunk
>     service instance 333 ethernet
>      encapsulation dot1q 333
>      rewrite ingress tag pop 1 symmetric
>      bridge-domain 333
> 
>     interface Vlan333
>     [blah]
>     --
> 
>     Nick
> 
>     >
>     >
>     >
>     > 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.
>     > _______________________________________________
>     > cisco-nsp mailing list  cisco-nsp at puck.nether.net
>     <mailto:cisco-nsp at puck.nether.net>
>     > https://puck.nether.net/mailman/listinfo/cisco-nsp
>     > archive at http://puck.nether.net/pipermail/cisco-nsp/
>     >
> 
>     _______________________________________________
>     cisco-nsp mailing list  cisco-nsp at puck.nether.net
>     <mailto:cisco-nsp at puck.nether.net>
>     https://puck.nether.net/mailman/listinfo/cisco-nsp
>     archive at http://puck.nether.net/pipermail/cisco-nsp/
> 
>