Just bought several C6880-X to replace some 6500 with Sup32. They will have a
lot of LACP channels...
Tried to search for the bug numbers mentioned below, the first one came back as
not cisco inside only, the second one comes with an information page with the
title :
We have a service cluster build around a C4900M : it concentrates a mix of 10G
(intercampus) connections and 1G connections (some backup lines and central
services such as DNS, VPN servers,...)
This works fine but to be able to connect all these, I had to add the 20 port
10/100/1000 UTP card
Recently we started using CWDM coloured 10G SFP+ interfaces (smartoptics) on
our campus network (in 4900M with OneX convertors). This works just fine
although Cisco probably will tell us that is not supported...
I'm wondering if someone already did the same thing on nexus 5xxx switches,
We are seeing discards on a newly installed 4900M, probably coming from the
fact that most input to the C4900M is coming from routers connected to it on
10G lines and is going out on a 2G etherchannel, although the total load on the
2G channel is just about 250-300 Mb/s. The 2G connection goes
We have a network based on a VSS with 20G channels to 3750E-24 clusters
top-of-rack.
We are seeing a lot of discards on the cluster which connects to our NetApp
SANs. I suspect this is because of the small buffers in the 3750E switches and
the growth of our traffic to the SAN, especially ISCI
Netwerkdienst Universiteit Antwerpen
Network Services University of Antwerp
From: chandler.bass...@gmail.com [mailto:chandler.bass...@gmail.com] On Behalf
Of Chandler Bassett
Sent: dinsdag 26 juli 2011 13:14
To: Holemans Wim
Cc: cisco-nsp
Subject: Re: [c-nsp] 3750E cluster replacement
Why's
...@puck.nether.net
[mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Martin Barry
Sent: dinsdag 26 juli 2011 14:12
To: cisco-nsp@puck.nether.net
Subject: Re: [c-nsp] 3750E cluster replacement
$quoted_author = Holemans Wim ;
We use clusters to protect us from hardware failures ; all servers and SAN
Nothing comes free with Cisco (unless this changed since we got our latest copy
of the GPL in feb) :
CAB-CONSOLE-USB=Console Cable 6 ft with USB Type A and mini-B 30,00$
CAB-CONSOLE-RJ45Console Cable 6ft with RJ45 and DB9F 30,00$
CAB-CONSOLE-USB Console Cable 6 ft with
We are seeing a cpu spike (and corresponding icmp respons latency) every minute
on one of our 65XX.
It is a 6506-E with Sup32-8G running IOS version ipbasek9-vz.122-18.SXF6.
I checked al our mgmt processes (snmp requests, arp table copies,...) but found
nothing that could lead to this
We have 3 campus with on each campus a 6506-E/Sup720-10G as 'master router' and
a 6506/E-Sup32-8gbit as backup router, in a HSRP config. In each router we also
have GBIC boards to connect the different buildings. These Sup32 routers also
act as L2 concentrator for part of each campus.
Now we
Not exactly the same but we had an 'automatic' reboot on a Sup720 and Sup32
during a broadcast storm after upgrading tot SXI4a. Before the upgrade the
machine kept running (unresponsive but running) until the cause of the
broadcast storm was removed.
Something seems to have changed in SXI4a
I've been searching the cisco website for this but didn't find an answer. We
have a new 6506-E to replace an old one, and I'll have to move some modules
between them as we don't have spare ones. Is there a way to 'provision' these
modules in the config of the new router so I can just copy the
We have a similar setup but with X2 interfaces, so no X2 to SFP+ convertors and
that works just fine. Have you checked the transceiver parameters ?
Maybe they are not within limit causing a shutdown of the interface ?
(temperature, input power, output power). The first batch of (non-cisco) X2
We have a VSS running, L2 only for the moment. We plan to enable L3
(static routing only for the moment) next week (along with a FWSM board
in each chassis).
We are running version s72033-advipservicesk9_wan-mz.122-33.SXI1.bin for
the moment (I know this version has too much features for what we
-max 4096)
I'll have to live with this until I can upgrade.
Wim
-Original Message-
From: Andrew Yourtchenko [mailto:ayour...@cisco.com]
Sent: woensdag 16 december 2009 19:35
To: Holemans Wim
Cc: cisco-nsp@puck.nether.net
Subject: Re: [c-nsp] FWSM logging problem
On Wed, 16 Dec 2009
It seems our FWSM doesn't log all denied ACLs. I blocked an IP address
on our FWSM and wanted to see whomever on campus is trying to access
this address (Botnet CC).
I added the following line in the ACL (even raised priority), you can
see that the rules triggers when I tried to telnet the
What version of IOS does it run ? Base version or lite version ?
Wim Holemans
Network Services
University of Antwerp
-Original Message-
From: cisco-nsp-boun...@puck.nether.net
[mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Jim McBurnett
Sent: vrijdag 13 november 2009 5:17
To:
Until now we used standard STP in our network with changed diameter
parameters (diameters of 10,11,..)
We plan to migrate to RSTP and as far as I tell from reading about it,
this should be no problem if we start changing from the outside into the
core.
I now have to add a new part to our network
I've been looking through the Cisco doc but didn't found what I was
looking for, therefor this question :
I transformed a 2801 router which we used as a dialin server to a
console server. The config seems to work, I can do a
telnet xxx 2018 to get access to serial port 0/1/1, also ssh -l
Look in the log files for the following error :
160Aug 01 2009 15:29:49: %ASA-0-716528: Unexpected fiber scheduler error;
possible out-of-memory condition
This kills our asa's (running version 8) on a regular basis (once a month),
reload is the only way to resolve this. We have a case open for
on this list.
Wim Holemans
-Original Message-
From: Alasdair McWilliam [mailto:alasda...@gmail.com]
Sent: dinsdag 14 juli 2009 19:33
To: Buhrmaster, Gary
Cc: Holemans Wim; Cisco NSP
Subject: Re: [c-nsp] VSS out-of-band mgmt
We have VSS deployed and it's management interface is on a mgmt
: Holemans Wim; Cisco NSP
Subject: Re: [c-nsp] VSS out-of-band mgmt
We have VSS deployed and it's management interface is on a mgmt-vrf.
So far everything that needs a source interface seems to work,
although I've not actually configured syslog yet, TACACS is now vrf
aware. You have to define
I have a VSS router that I want to do some out-of-band mgmt with. Is
this possible with VRF-lite ? I would like to build a channel with the
UTP ports on the sup720, give the VSS an address on this trunk but keep
this interface out of the standard routing table. Can this be done with
VRF-lite ? Or
I'm looking for a (free) network simulator that allows me to simulate a
small network (20 switches) with different vlans on it. I want to test
different scenario's : what happens if this switch goes down or that
link goes down, how do the packets flow in each scenario for the
different vlans...
Just found out through google, will give it a try tomorrow.
Thanks,
Wim Holemans
From: Michal Prazenka [mailto:michal.praze...@gtsce.com]
Sent: maandag 18 mei 2009 19:35
To: Holemans Wim
Cc: cisco-nsp@puck.nether.net
Subject: Re: [c-nsp] network
I'm testing a VSS solution for our campus network, most things seem to
work as expected. I ran however into problems when testing the eFSU
upgrade procedure.
The system came with ip base 12.33SXH4 on, I created the cluster with
this version without problem (although the notes state that you
(I'm the one who posted the original question).
Just tested it again with a second stack of 3750E's ; this gave the same
result :
Upgrading from 12.2.2(35) to 12.2.(46) and reload of second switch gave
a Version Mismatch with left the second switch hanging. Only a reload of
the master restored
We are testing the following setup :
65XX-VSS - etherchannel - 3750E stack (2 switches) - teaming enabled
servers
This should give maximal uptime, overriding defects on the router or
3750E switches. We intend to use these switches in L2 mode only,
managing them via the mgmt fa0 interface.
Is there a way to divide a 6500 into multiple 'Virtual Routers' with
different routing tables ? I've read about VRF-Lite but it is always
mentioned in a VPN environment with remote and central devices. I need
to get some traffic into a FWSM on a 6500, out of the 6500 to an IPS and
back into the
Got some personal mails all in support of the stacking, saw only
negative mails on the list, interesting...
Price difference between 2x 3750 and a 6504 is not so small and a 6504
with one supervisor is still a single point of failure where a cluster
of 2 switches would give me redundancy.
Could you/someone elaborate on 'failure of one part is a failure of the
stack' ?
I thought Cisco just pushed this construction to get more
redundancy/uptime in the network ?
We were planning to replace some single switches with a lot of dual-line
channels with a cluster of 2 of these 36xx or
We are setting up a testbed for IP SLA monitoring and I wanted to
include our core 6500 switches into the test. For 2 of them this went
without problem, on two others this doesn't work : I get the following
error (after putting on debug) :
RTR unable to set SO_STRICT_ADDR_BIND option
I
Anyone has a good reference on the steps to take to convert a standalone
FWSM to the primary of a FAILOVER FWSM pair. Current FWSM is running
3.2.8 and has 2 transparent contexts. Are there any steps that will
influence the current running FWSM (take it down or so) ?
Thanks,
Wim
Just upgraded our FWSM to version 3.1.11 after 3 random crashes in a
month. Now we are thinking about buying a second FWSM to do failover in
order to limit downtime and facilitate upgrades : most of our servers
are connected to the 6513 carrying this FWSM.
We use the 2 standard virtual contexts
]
Sent: vrijdag 5 september 2008 18:59
To: Holemans Wim
Cc: cisco-nsp@puck.nether.net
Subject: Re: [c-nsp] FWSM failover transparent mode
Not to hijack this thread, but what modules are you using for server
connectivity in your 6513? We deployed some 6513s as SF switches long
ago (bad decision
Can someone clarify the PAGP problem ? I had a discussion with someone
of Cisco for a new design in one of our datarooms and we had chosen a
VSS solution with dual 3750E stacks and 20Gig uplinks in each rack to
the VSS chassis for max redundantie. According to our Cisco contact,
this was a working
I got this via Qualys but haven't seen it on this list (hope I didn't
miss it). So to be sure :
The following vulnerabilities were added to the Vulnerability
KnowledgeBase of the QualysGuard Web service between May 05, 2008 and
May 11, 2008.
QIDSev. Title
...
43134 P 3 Cisco IOS
I know I have seen this before, but I can't find the article.
On most cisco IOS switches, you get syslog messages if a port goes down
or up. On a 6500 this is not the case.
But I remember seeing an article in which a way was shown how to enable
this feature on 65XX IOS.
Anyone has a pointer to
Thanks for all who answered to my question.
The command is :
logging event link-status default
Wim Holemans
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Holemans Wim
Sent: dinsdag 29 april 2008 10:38
To: cisco-nsp@puck.nether.net
Subject: [c-nsp
We just got bitten by a serious etherchannel problem : we have an 2 gig
etherchannel link between 2 campus.
Someone on the other end misconfigured an interface (typed 6/1 instead
of 1/6) and had overwritten the allowed vlans on one of the interfaces.
As a result of this, the interface was thrown
We have a bunch of 65XX with 6148-GE-TX or 6148A-GE-TX boards to connect
a large number of servers and different etherchannels between them.
When i checked the release notes for 12.2SX, i found the following lines
:
...
WS-X6148A-GE-TX
*Number of ports: 48
Number of port groups: 6
Port ranges per
Can anyone tell me where the temp sensors on a WS-X6148-GE-TX board are
physically located ?
This is part of the env info :
module 2 outlet temperature: 27C
module 2 inlet temperature: 24C
module 2 device-1 temperature: 25C
module 2 device-2 temperature: 27C
module 3 outlet
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