oincidence, but these seems like a direct line from problem to
resolution.
-
Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
- Original Message -
From: "Mike Hammett"
To: "NANOG"
Sent: Monday, April 3, 2023 12:21:29 AM
Does anyone here use VXLAN on Cisco Nexus gear in the "vlan-aware-bundle" mode
(RFC7432 §6.3), not the "vlan-based" mode (§6.1)? If so, could you please
contact me directly to explain how you did so?
Much appreciated,
-Adam
Adam Thompson
Consultant, Infrastructure Servic
www.ics-il.com
Midwest-IX
http://www.midwest-ix.com
From: "Mike Hammett"
To: "NANOG"
Sent: Monday, April 3, 2023 12:21:29 AM
Subject: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
We have a Nexus 3064 that is setup with partial BGP tables and is routing based
o
3 12:21:29 AMSubject: Cisco Nexus 3k Route Selection\Packet Forwarding DebuggingWe have a Nexus 3064 that is setup with partial BGP tables and is routing based on that. I've done a show ip bgp for an IP of interest and it has an expected next hop IP. I show ip arp on that next hop IP and it has th
.
-
Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
- Original Message -
From: "Mike Hammett"
To: "NANOG"
Sent: Monday, April 3, 2023 12:21:29 AM
Subject: Cisco Nexus 3k Route Selection\Packet Forwarding Debuggin
ike Hammett"
> *Cc: *"Matthew Huff" , "NANOG"
> *Sent: *Tuesday, April 4, 2023 11:39:26 AM
> *Subject: *Re: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
>
> If you are both connected to the same upstream, but the customer wants
> traffic d
Midwest-IX
http://www.midwest-ix.com
- Original Message -
From: "David Bass"
To: "Mike Hammett"
Cc: "Matthew Huff" , "NANOG"
Sent: Tuesday, April 4, 2023 11:39:26 AM
Subject: Re: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
uld be, besides a bug.
>
>
>
> -
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
> Midwest-IX
> http://www.midwest-ix.com
>
> --
> *From: *"David Bass"
> *To: *"Mike Hammett&quo
Hammett"
Cc: "Matthew Huff" , "NANOG"
Sent: Monday, April 3, 2023 9:12:52 PM
Subject: Re: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
You said that they are seeing traffic from another upstream…are you advertising
the prefix to them? Are you adverti
gt;
> -
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
> Midwest-IX
> http://www.midwest-ix.com
>
> --
> *From: *"Mike Hammett"
> *To: *"Matthew Huff"
> *Cc: *"NANOG"
http://www.midwest-ix.com
From: "Mike Hammett"
To: "Matthew Huff"
Cc: "NANOG"
Sent: Monday, April 3, 2023 8:26:30 AM
Subject: Re: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
Only two VRFs, default and manangement. IIRC, everything I saw bef
-il.com
Midwest-IX
http://www.midwest-ix.com
- Original Message -
From: "Matthew Huff"
To: "Mike Hammett"
Cc: "NANOG"
Sent: Monday, April 3, 2023 8:06:51 AM
Subject: RE: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
What about VRFs and/or
clauses:
ipv6 address prefix-lists: prefix_ipv6_static_to_eigrp
Set clauses:
From: Mike Hammett
Sent: Monday, April 3, 2023 9:00 AM
To: Matthew Huff
Cc: NANOG
Subject: Re: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
It could be an sFlow bug, but I come at this from
://www.ics-il.com
Midwest-IX
http://www.midwest-ix.com
- Original Message -
From: "Matthew Huff"
To: "Mike Hammett"
Cc: "NANOG"
Sent: Monday, April 3, 2023 7:50:08 AM
Subject: RE: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
SFlow mis
SFlow misconfiguration or bug on either the nexus or the sflow monitor? On the
monitor, can you verify that the snmp interfaces are mapped to the correct ones
on the nexus?
From: Mike Hammett
Sent: Monday, April 3, 2023 8:47 AM
To: Matthew Huff
Cc: NANOG
Subject: Re: Cisco Nexus 3k Route
;Mike Hammett"
To: "NANOG"
Sent: Monday, April 3, 2023 12:21:29 AM
Subject: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
We have a Nexus 3064 that is setup with partial BGP tables and is routing based
on that.
I've done a show ip bgp for an IP of interest an
ammett
Sent: Monday, April 3, 2023 1:21 AM
To: NANOG
Subject: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
We have a Nexus 3064 that is setup with partial BGP tables and is routing based
on that.
I've done a show ip bgp for an IP of interest and it has an expected next ho
It shows the desired result.
-
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
Midwest-IX
http://www.midwest-ix.com
- Original Message -
From: "Jay Hennigan"
To: nanog@nanog.org
Sent: Monday, April 3, 2023 1:02:42 AM
Subject: Re: Cisc
lf Of Mike Hammett
Sent: Monday, April 3, 2023 1:21 AM
To: NANOG
Subject: Cisco Nexus 3k Route Selection\Packet Forwarding Debugging
We have a Nexus 3064 that is setup with partial BGP tables and is routing based
on that.
I've done a show ip bgp for an IP of interest and it has an expected next
On 4/2/23 22:21, Mike Hammett wrote:
We have a Nexus 3064 that is setup with partial BGP tables and is
routing based on that.
I've done a show ip bgp for an IP of interest and it has an expected
next hop IP. I show ip arp on that next hop IP and it has the expected
interface.
However,
On 4/2/23 22:21, Mike Hammett wrote:
We have a Nexus 3064 that is setup with partial BGP tables and is
routing based on that.
I've done a show ip bgp for an IP of interest and it has an expected
next hop IP. I show ip arp on that next hop IP and it has the expected
interface.
However,
Is the BGP route getting installed into the rib?
On Mon, Apr 3, 2023, 01:24 Mike Hammett wrote:
> We have a Nexus 3064 that is setup with partial BGP tables and is routing
> based on that.
>
>
> I've done a show ip bgp for an IP of interest and it has an expected next
> hop IP. I show ip arp
We have a Nexus 3064 that is setup with partial BGP tables and is routing based
on that.
I've done a show ip bgp for an IP of interest and it has an expected next hop
IP. I show ip arp on that next hop IP and it has the expected interface.
However, sFlows show the packets leaving on a
.
*From: *"Raymond Burkholder"
*To: *nanog@nanog.org
*Sent: *Monday, March 20, 2023 10:16:37 AM
*Subject: *Re: Cisco Nexus Odd sFlow Implementation
On 3/20/23 08:55, Mike Hammett wrote:
Cisco is sending the in and out packets in their sFlow
impl
0:16:37 AM
Subject: Re: Cisco Nexus Odd sFlow Implementation
On 3/20/23 08:55, Mike Hammett wrote:
Cisco is sending the in and out packets in their sFlow implementation on their
Nexus switches. Obviously, this double counts the information.
Are there solutions that process those flows and
On 3/20/23 08:55, Mike Hammett wrote:
Cisco is sending the in and out packets in their sFlow implementation
on their Nexus switches. Obviously, this double counts the information.
Are there solutions that process those flows and remove one of those
directions?
Wouldn't you just do that in
Cisco is sending the in and out packets in their sFlow implementation on their
Nexus switches. Obviously, this double counts the information.
Are there solutions that process those flows and remove one of those
directions?
-
Mike Hammett
Intelligent Computing Solutions
Midwest
--- bs...@teamonesolutions.com wrote:From: Brandon Svec Anyone can create a Cisco login. I would do that and check the bug tracking tool. I did a quick search on your error message and came up with this:I was unaware that anyone could do that
on:
NA
Customer Visible
Notifications
Save Bug
Open Support Case
Was the description about this Bug Helpful?(0)
Details <>
Last Modified:
Jan 13,2020
Status:
Open
Severity:
2 Severe
Product:(1)
Cisco Nexus 9000 Series Switches
Support Cases:
3
> On Jan 17, 2020, at 11:08 AM, Scott
I don't have a login to cisco to find out what this
is and I'm having trouble finding anything about it
in search engines that doesn't require a login to
cisco. I guess they only want certain folks to know
about it... :( Does anyone know anything about this
and can explain it to me? If
At 03:48 PM 8/8/2017 Tuesday, Simon Lockhart opined:
On Tue Jul 25, 2017 at 08:31:54PM -0700, Tim Stevenson wrote:
> tstevens-92160yc-1# sh int cap | beg 1/49 | eg Eth|Speed
> Ethernet1/49 > Speed: 4
> Ethernet1/50 > Speed:
On Tue Jul 25, 2017 at 08:31:54PM -0700, Tim Stevenson wrote:
> Actually, only two.
>
> tstevens-92160yc-1# sh int cap | beg 1/49 | eg Eth|Speed
> Ethernet1/49
> Speed: 4
> Ethernet1/50
> Speed: 1000,1,25000,4,5,10
> Ethernet1/51
> Speed:
On Tue Jul 25, 2017 at 08:31:54PM -0700, Tim Stevenson wrote:
> tstevens-92160yc-1# sh int cap | beg 1/49 | eg Eth|Speed
> Ethernet1/49 > Speed: 4
> Ethernet1/50 > Speed: 1000,1,25000,4,5,10
> Ethernet1/51 > Speed: 4
>
At 07:39 PM 7/25/2017 Tuesday, Bill Woodcock opined:
> On Jul 25, 2017, at 7:25 PM, James Braunegg
<james.braun...@micron21.com> wrote:
>
> Dear Nanog
>
> Just wondering if anyone is using the Cisco
Nexus 93180YC with the LAN enterprise license
and has any
> On Jul 25, 2017, at 7:25 PM, James Braunegg <james.braun...@micron21.com>
> wrote:
>
> Dear Nanog
>
> Just wondering if anyone is using the Cisco Nexus 93180YC with the LAN
> enterprise license and has any honest feedback about this platform,
> especially
Dear Nanog
Just wondering if anyone is using the Cisco Nexus 93180YC with the LAN
enterprise license and has any honest feedback about this platform, especially
if you are using VXLAN routing and eVPN, would love to hear from you.
For those that don't know the Cisco Nexus 93180YC is a 1RU
Hi Santosh
Likely it's disabled arp across broadcast (assuming both servers are on
same broadcast domain). One can comment on it after looking at config of
the port. I have seen similar case in some hosting providers who run shared
vlans across customers and they block direct traffic among those
Hello,
I cannot see any image in attachment.
If you can ping from outside and not between them, wild guess it's not a
L2 pbm.
Are you able to see the arp of srv2 from srv1 ( and vice-versa )
Without more info ( or it's maybe on the image I cannot see ) I would
look in ACL
Hello All,
Thank you all in advance.
We have connected two nexus 3048 Switches and two l2 Switches as below
using vPC and LACP.
We have not seen any issues apart from one of VOIP server connected to
Switch 1 has lost access to VOIP Server connected Switch 2 and vice versa.
Where I am able to
I have a small setup, Nexus 2 x 5596UP + 12 x 2248TP FEX, 2 x B22DELL,
2 x B22HP, 1 x C2248PQ-10GE.
Been using this setup since 2012, so it's getting a bit long in the
tooth. It's in an Active-Active setup because there wasn't much
guidance at the time on which way to go. There are some
Brandon Ewing nicot...@warningg.com wrote:
David Bass wrote:
The n2k ToR is not a great design for user or storage interfaces if most of
your traffic is east/west. It is great as a low cost ilo/drac/choose your
oob port, or if most of your traffic is north/south. Biggest thing to
On Mon, 2 Feb 2015, Brandon Ewing wrote:
On Mon, Feb 02, 2015 at 12:51:04PM -0600, David Bass wrote:
The n2k ToR is not a great design for user or storage interfaces if most of
your traffic is east/west. It is great as a low cost ilo/drac/choose your oob
port, or if most of your traffic is
On Mon, Feb 02, 2015 at 12:51:04PM -0600, David Bass wrote:
The n2k ToR is not a great design for user or storage interfaces if most of
your traffic is east/west. It is great as a low cost ilo/drac/choose your
oob port, or if most of your traffic is north/south. Biggest thing to
remember
Nanog,
I would like to poll the collective for experiences both positive and negative
with the Nexus line. More specifically I am interested in hearing about FEX
with N2K at the ToR and if this has indeed made any impact on Opex as well as
non-obvious shortcomings to using the fabric
: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Herman, Anthony
Sent: Monday, February 02, 2015 11:17 AM
To: nanog@nanog.org
Subject: Cisco Nexus
Nanog,
I would like to poll the collective for experiences both positive and negative
with the Nexus line. More specifically I am interested
The n2k ToR is not a great design for user or storage interfaces if most of
your traffic is east/west. It is great as a low cost ilo/drac/choose your oob
port, or if most of your traffic is north/south. Biggest thing to remember is
that it is not a switch, and has limitations such as not
this is an
old post, but here's a good one that explains precisely what I mean:
If you look at the N5K verified scalability guide, you see this:
Maximum FEXs dual homed to a vPC Cisco Nexus 5500 Series Switch Pair: 24
http://www.cisco.com/en/US/docs/switches/datacenter/nexus5500/sw/configuration_limits
I wasn't the implementing engineer but I've been at two places that did that, a
larger game company and a network gear manufacturer in their engineering
support computational hubs. I was there during planning and rollout at the
game company, very early in the Nexus lifespan.
Both sites
There are some unfortunate limitations in classifying incoming traffic.
It's been a while, but I think the rule is that Nexus 2000 devices can only
classify based on incoming 802.1p cos values.
It's a pretty strange and disappointing limitation for an edge device where
you're less likely to have
Hello All,
Looking to deploying 3 x N2K-C2248TP-1GE (2ps 1fan) 4 x10GE slot and 48
x 10/100/1000, Rather than a 6509. I'm hesitant with those is the
maintenance aspect. While ISSUs don't necessarily impact the 2248, EPLD
upgrades would. Do you know how upgrades are implemented on the
Hi,
I got some trouble to get the 8-port (4/2/1 FC module) up and running in
a Nexus 5000. The module itself is shown in the inventory but when I
want to have a detailed look on an interface than there is no option
Fibre Channel.
Is there anything else to do with this module (activation,
When you do a show running, do the interfaces show there at all as fc x/x? Do
you have the FCOE feature enabled?
-Mike
-Original Message-
From: Thomas Weible [mailto:thomas.wei...@flexoptix.net]
Sent: Monday, January 17, 2011 11:14 AM
To: nanog@nanog.org
Subject: Cisco Nexus 5000
@nanog.org
Subject: Cisco Nexus 5000 with 4G FC module - initialization ?
Hi,
I got some trouble to get the 8-port (4/2/1 FC module) up and running in a
Nexus 5000. The module itself is shown in the inventory but when I want to
have a detailed look on an interface than there is no option Fibre
Does anyone have any experience with the Dell PowerConnect 8024F 10-gig
switch that they'd be willing to share? How does it perform? How reliable
is it? My experiences with the Dell switches have been less than favorable
to this point, but I am willing to concede that some of that may be
Hi,
On Fri, 2010-06-18 at 11:57 -0400, Steven Fischer wrote:
Does anyone have any experience with the Dell PowerConnect 8024F 10-gig
switch that they'd be willing to share? How does it perform? How reliable
is it? My experiences with the Dell switches have been less than favorable
to this
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