This all has to be a problem on the SBC. I've only been peripherally
involved up until now and I just found out they have another SBC in the
same VLAN on the same pair of switches and it is not having a problem and
is not experiencing this mad MAC address behavior at all. It's perfectly
stable. Tha
Here's an example of what I'm talking about. The MAC learning log has been
stable since they reloaded the SBC on Saturday:
show ethernet-switching mac-learning-log | match 3c:91
Sat Jul 23 12:05:22 2011 vlan_name sbc-core mac 00:08:25:fa:3c:91 was
learned on xe-0/1/1.0
Sat Apr 13 04:24:15 2013 v
I was just checking again and I'm really having difficulty reconciling the
conflicting information reported by the switch. The output of "show
ethernet mac-learning-log" is stable and the MAC addresses show as learned
on the expected interfaces. However, we created firewall filters to count
frames
I think they do have them configured differently, but they swear they don't
and I don't have the access or the knowledge on that platform to disagree
with them. The network side is straightforward switching. You are correct
that we have multiple groups managing these devices. This group is the only
On 06/09/2013 04:59 PM, John Neiberger wrote:
We have several of these throughout our network and we're only seeing this
problem in a couple of cases. The rest work just fine. Most of the SBCs are
Obvious question: are you sure those two aren't configured different
(wrongly) compared to the o
;
> --
> *From:* John Neiberger
> *To:* Georgios Vlachos
> *Cc:* juniper-nsp@puck.nether.net
> *Sent:* Saturday, June 8, 2013 9:32:19 PM
>
> *Subject:* Re: [j-nsp] What is this ethernet switching trace telling us?
>
> We added a firewall filt
stant
move of the same MAC.
Serge
From: John Neiberger
To: Georgios Vlachos
Cc: juniper-nsp@puck.nether.net
Sent: Saturday, June 8, 2013 9:32:19 PM
Subject: Re: [j-nsp] What is this ethernet switching trace telling us?
We added a firewall filter to
gt;
>
>
> -Original Message-
> From: juniper-nsp [mailto:juniper-nsp-boun...@puck.nether.net] On Behalf
> Of
> John Neiberger
> Sent: Saturday, June 08, 2013 4:16 PM
> To: Gavin Henry
> Cc: juniper-nsp@puck.nether.net
> Subject: Re: [j-nsp] What is this ethernet
Behalf Of
John Neiberger
Sent: Saturday, June 08, 2013 4:16 PM
To: Gavin Henry
Cc: juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] What is this ethernet switching trace telling us?
This is an Acme Packet chassis. I really have no idea what it has running
on it, but I'll find out from our voic
This is an Acme Packet chassis. I really have no idea what it has running
on it, but I'll find out from our voice team.
Thanks!
On Jun 8, 2013 1:35 AM, "Gavin Henry" wrote:
> Hi John,
>
> We (SureVoIP) have seen this on some of our hosted SIP servers which
> run on Linux with multiple interfaces
Hi Phil,
Thanks. Yes, we used those too. Forgot to say. There are a few more iirc
in there.
Gavin.
On 8 Jun 2013 09:54, "Phil Mayers" wrote:
> On 06/08/2013 08:35 AM, Gavin Henry wrote:
>
> your email to /etc/aliases. We found that the Linux kernel doesn't
>> send the same arp response out of
On 06/08/2013 08:35 AM, Gavin Henry wrote:
your email to /etc/aliases. We found that the Linux kernel doesn't
send the same arp response out of the same interface. For example, one
interface was a public IP and one was a private IP. The kernel would
send a "I'm on MAC blah" for the private IP ou
Hi John,
We (SureVoIP) have seen this on some of our hosted SIP servers which
run on Linux with multiple interfaces. This was connected to a Cisco
switch though. If the SBC is on linux then install arpwatch and add
your email to /etc/aliases. We found that the Linux kernel doesn't
send the same ar
Here is another example of the same type of thing. In this case, a MAC
address appears to be jumping from one four-port card to another on the
same switch. Port 5 is connected to one NIC, while port 8 is on another
four-port NIC and should never, ever use the MAC address we're learning on
port 5. D
I just checked and we do not have spanning tree enabled on this switch or
its partner. We have two switches with a 10-gig link between them. Each
switch is connected to a different upstream router. The device in question
is a session border controller for VoIP. It is a chassis with multiple
four-po
Are you running spanning tree ?
Sent from my iPhone
On Jun 7, 2013, at 18:37, "Gavin Henry" wrote:
> Is this a server connected via two ports?
>
> Sent from my iPad 2
>
> On 7 Jun 2013, at 23:12, John Neiberger wrote:
>
>> Also, another interesting thing about this is that the output of "s
Is this a server connected via two ports?
Sent from my iPad 2
On 7 Jun 2013, at 23:12, John Neiberger wrote:
> Also, another interesting thing about this is that the output of "show
> ethernet mac-learning-log" stops at April 13th. I have no idea why. If a
> MAC address were jumping around, we'
Also, another interesting thing about this is that the output of "show
ethernet mac-learning-log" stops at April 13th. I have no idea why. If a
MAC address were jumping around, we'd see it in the MAC learning log...if
it were up to date. What would cause a Juniper switch to stop logging to
the MAC
We're trying to troubleshoot an odd issue and this log output makes it
appear that a MAC address is flipping between interfaces. There are other
interfaces involved later in the logs. I'm starting to think this isn't
telling us what we think it's telling us. Does this indicate that the MAC
address
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