[c-nsp] CISCO ME3600X ARP ISSUE
Antonis Vosdoganis
avosdo at gmail.com
Wed Jul 3 12:56:13 EDT 2013
There are 2 traces one from 3600 and one from 2960. The one you are
refering is from 2960. With 2960 there is no problem.
Στις 3 Ιουλ 2013 7:31 μ.μ., ο χρήστης "Aaron" <aaron1 at gvtc.com> έγραψε:
> you mentioned...
>
> > Cisco ME3600X is not responding to Patton ARP request so Patton is
> > losing ip connectivity since is thinking that Default Gateway is down.
>
> ...but i see in this wireshark sniff "ARP_WS-C2960G-8TC-L.pcapng" frame
> number 14 that the cisco (i assume it's the me3600) does in fact arp reply
> to the patton...
>
> 00 21 d7 cb 69 c1 - sender mac - cisco says i am 46.245.137.1
>
> 00 a0 ba 05 ad c3 - target mac - patton - 46.245.137.3
>
> to prove that the cisco me3600 is sending this maybe you could...
>
> sh interface | in bia
>
> look for "0021.d7cb.69c1"
>
> Aaron
>
>
> -----Original Message-----
> From: Nick Hilliard [mailto:nick at foobar.org]
> Sent: Wednesday, July 03, 2013 11:18 AM
> To: Antonis Vosdoganis
> Cc: Aaron; cisco-nsp
> Subject: Re: [c-nsp] CISCO ME3600X ARP ISSUE
>
> 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.
> > > _______________________________________________
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> > >
> >
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>
>
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