Cisco Switching/Routing :: 3750x Getting Platform RSPAN Across Nexus?
Feb 5, 2013
We have the following design in mind
3750 Stack (Voice gateway for phones configured on the 3750 and has a VPC nexus)
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(Nexus5596) ++++++++++ (Nexus5596) (Gateway for all other vlan like PC / servers / etc)
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3750x access layer (VPC to Nexus)
[CODE].....
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Jan 19, 2013
We have Nexus 7009 switch and want to configure the span session
We are using F2 and M2 card both are in seperate differeent VDC.And out server is connected to M2 card on eth 4/6 and want to monitor the traffic from vlan 161Which is made on F2 card.
Connectivity is like this.
Nexus 1 Nexus2
Slot 3: F2 card Slot 3 : F2 card
Slot 3: M2 card Slot 3 : M2 card
[Code]......
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Feb 20, 2013
the phone connects to the 3750-A access layer switch (VTP mode client) which connects to the nexus 5596 (The nexus is the layer 3 device and set to vtp mode server) and finally we have a Voice recorder that connects to another access layer 3750-B switch.(VTP mode client)
For voice recording I need to setup RSPAN and the nexus5596 does not support RSPAN will the following have any impact on the nexus
IF I move the 3750-B to VTP server mode and run the command remote span on the VLan I need to Rspan its going to update the VTP data base in short it will update the vlan.dat file for all the switch in that VTP domain.
AS the vtp update reaches the nexus saying there is a change (keeping in mind the nexus does not support rspan not sure hows its going to handle that request and how its going to update its vlan.dat file)
Is it going to incremment the VTP revision number? can it crash the vlan.dat file on the nexus ? or do nothing and ignore the update and stop the update from proceeding to the 3750 A switch?
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Feb 26, 2013
we observe that the process platform causes about 50% cpu load of our Nexus 7010.Could not find any information for what this process is responsible to find out the root cause of the high cpu load.
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Mar 16, 2011
i will be creating combination of SPAN and RSPAN on catalyst 6506 according to the link
[URL]
im planning to implement this on two 6506 switches will this work? or do i violate the number of monitor session? sorce span?
sw1
monitor session 1 source interface Fa5/18monitor session 1 destination interface Fa5/48
monitor session 2 source interface Fa6/34monitor session 2 destination interface
[Code].....
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May 6, 2013
We are trying to configure RSPAN at one of our sites in order to record voice calls using CallRex. We have it working successfully at another site using RSPAN (smaller site with 4x 3560 PoE switches), but when trying to set it up at this site, it causes "instability" for the voice network to say the least (some phones display one-way audio, UCM down message on the phone...not good). The calls are actually recording successfully on the CallRex server, but we cannot leave the RSPAN config in place due to the issues it causes. As soon as the RSPAN commands are removed, everything behaves normally. Here is the relevent config:
EDGE Switch 1 (Cisco 2960-48LPS):
vlan 210
name CALL-RECORDING
remote-span
interface GigabitEthernet1/0/1
[code]....
The config is pretty stright-forward, but as mentioned above, is causing major problems when turned up.CPU / memory levels are normal. Nothing shows up in the sh log on either the Edge or Core switches.
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Apr 24, 2012
I have a question about RSPAN, is this feature only supported on 6500 and 4500 switchs?
we have 2 3560 switches and want to use RSPAN to monitor different source ports.I checked thorugh the cisco feature navigator and the IOS we have on 3560 has the RSPAN fature listed in them.
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May 5, 2013
I have a RSPAN session configured between a Cisco 3750 and Cisco 2950 switches and I dont see the traffic I am expecting to see on the destination port. I only see broadcast traffic .. HRSP hellos etc. Below is what I have configured on both switches.
3750 (gi1/0/33)----TRUNK------(fa0/47)2950(fa0/4)-----windows server
3750
---------
monitor session 1 source interface gi1/0/18
monitor session 1 destination remote vlan 901
[code].....
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May 9, 2012
we want to record voip telephone?Presently im using wireshark on a laptop to test the rspan session
Here is how it's configured
CORE_SWITCH is
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 28 WS-C3750G-24TS 12.2(52)SE C3750-IPBASEK9-M
2 52 WS-C3750G-48TS 12.2(52)SE C3750-IPBASEK9-M
[code]....
Ive created the vlan 33 on my core switch and remote SPAN VLANs 133 Core switch is vtp server so i double checked on all switch and vlan 33 and 133 are present When i listen to conversation with wireshark we are only recoding voice of the one who is answering and we don't hear the other person talking?
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Apr 10, 2012
Any info regarding the number of MAC Entries of Catalyst 3560X/3750X Platform? I can find that number in 3560, 3750 ds but not in 3560x ds.
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Oct 30, 2011
I'm going to replace a Cat6513 with a Nexus 7018. In my Cat6513, there are object tracking config as follows:
ip sla monitor 1
type echo protocol ipIcmpEcho 112.78.254.249
timeout 3000
frequency 6
ip sla monitor schedule 1 life forever start-time now
ip route 172.17.7.0 255.255.255.0 165.202.51.46 name VPN-1 track 123
Is there similar feature in Nexus platform? Because from Nx-OS command ref, I only found:
ip route ip-prefix/mask {[interface] next-hop} [preference] [tag id]
Seems can't associate a track object to a static route in Nx-OS?
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Apr 24, 2013
I am trying to bridge the traffic(including different vlan traffic) from rtrA to rtrB using "bridge-group" functionality.I achived the same using a 7200 using the below configuration. [code] When I tried the same using 7600 router ping failed between rtrA and rtrB. Then from the documents it seems "bridge irb" is not supported in 7600.Is there any other way we can achieve the same fuctionality ( eg: using switchport also fine) ?
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Dec 22, 2011
I´m looking for an IOS on a 7609 SUP720/MSF3 that supports the NAT-PT feature (IPv4 to IPv6 translation). I searched on the Cisco Feature Navigator but the tool didn´t show up any IOS for the 760x platforms. I only got the feature "NAT-PT: Support for Overload (PAT)" with IOS 15.xS train.
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Aug 24, 2012
A customer wants to upgrade an IOS Base (cat4500-ipbasek9-mz.122-25.SG4.bin) of a WS-C4507R Cisco, for a IOS that have a enterprices functionalities.We install an IOS cat4500e-entservicesk9-mz.122-53.SG5.bin, but we had the following results:
config-register = 0x2102
Autobooting specified file using Variable BOOT .....
Current BOOT file is --- bootflash: cat4500e-entservicesk9-mz.122-53.SG5.bin
[Code].....
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May 6, 2012
I got the error in object when I try to add a new HSRP group in new vlan.All the HSRP group has the same HSRP group the 2.another way to provide clients's default gateway redundancy for each Vlan intead to use the HSRP?
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Mar 27, 2013
I am having problems with IGMP and QoS on CAT6500 platform with SUP720 engine.The problem is, it seems that all IGMP packets are getting marked with DSCP 48 when sent out of the switch regardless of any input service policy. I found several articles saying that PFC QoS does not apply to IGMP packets. However in IOS 15 that should be possible, but I didn't get it to work there either. [code]
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Sep 9, 2012
Uhg. I deployed a 3560G a week ago and it was crashing... so I replaced it Sep 7 around 16:00 and now this one is crashing. Different logs.
Version 12.2(55)EX3
Sep 6 18:06:08: %PLATFORM-1-CRASHED: Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!
Sep 6 21:05:18: %PLATFORM-1-CRASHED: Data TLB Miss Exception (0x1100)!
Sep 7 04:12:43: %PLATFORM-1-CRASHED: Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!
Sep 7 05:35:09: %PLATFORM-1-CRASHED: Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!
Sep 7 08:21:37: %PLATFORM-1-CRASHED: Data TLB Miss Exception (0x1100)!
Sep 7 11:13:18: %PLATFORM-1-CRASHED: Data TLB Miss Exception (0x1100)!
Replacement Version 12.2(55)EX2
Sep 7 16:34:48: %PLATFORM-1-CRASHED: Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!
Sep 8 03:39:38: %PLATFORM-1-CRASHED: Data TLB Miss Exception (0x1100)!
Sep 8 18:26:06: %PLATFORM-1-CRASHED: Data TLB Miss Exception (0x1100)!
Sep 9 18:14:38: %PLATFORM-1-CRASHED: Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!
More detailed syslogs are in the attaced 'crash-logs.txt' file.
The device is running OSPF (it is in an NSSA). I have several other devices configured almost the same running the same IOS in my network and they are working fine.This does make the third out-of-box 3560C Cisco that has failed on me within a few days.
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May 29, 2012
I know that an ELAM can be setup on a 6500 running ipservices 12.2(33)SXJ, however I noticed that following commands are not available on a 6500 router running advipservices 12.2(33)SXJ:show platform capture elam asic etc
So I wanted to know if there is an alternate way to setup an ELAM for troubleshooting purposes?
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Feb 6, 2012
We have 2 x C6506E and 2 x C3560-48's, they are all interconnected via port channels at 2Gb per channel. The 6506's are running CEF but the 3560's are not (The 3560's carry all our server traffic).When I do a show CEF on the 3560's it says %IPv4 CEF not running. There does not appear to be a global command to enable CEF on these switches.Is this an IOS version option or is not supported on the hardware platform?
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Dec 10, 2012
In our environment we have some HP chassis, and with them there are blade switches. Lately, we've been seeing some drops on few servers connected on the blade switch ports. The switch model is WS-CBS3120X-S. And below is the tx drop for two interfaces ( where the servers are connected to).
sh platform port-asic stats drop gi1/0/11
Interface Gi1/0/11 TxQueue Drop Statistics
Queue 0
Weight 0 Frames 0
Weight 1 Frames 0
[Code]...
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Dec 5, 2012
I have been working on some Catalyst 3750's running 12.2(55)SE6 and hit an issue with CEF load-balancing over multiple equal-cost paths. Anyway this issue is now solved but it introduced me to the command 'show platform forward' - this shows you how the forwarding of a packet would be done via hardware cef (as opposed to the command 'sho ip cef exact-route' command that only shows the software cef path). Anyway I tried the command on a 3560G running 15.0(2)SE and it crashes the switch. I tried it a couple of times and verified that the MAC & IP addresses were exactly right in the command and each time the switch crashes. I have extracted the relevant bits from the crashinfo and attached them.
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Feb 23, 2011
We are facing issue of continous packet discards On nexus4001L link (int po2) to Nexus5020 switch. Nexus4001L is installed in IBM blade center server and we have FCOE enabled in this setup. [code]
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Mar 15, 2013
I have been tasked to replace the existing Cat 6500 and 3750 switches by Nexus 7000 and Nexus 2000.I was told initially my boss plans to get 2 x Nexus 7000 and then eventually blow up to 4 x Nexus 7000s.For Nexus, is there a list of tasks / points that i need to consider for building the initial design?
Can i just link the Nexus 7000 like the following?
N7k-A ========= N7k-B
| |
lots of N2ks lots of N2ks
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Dec 22, 2011
Struggle to find the SNMP MIBS of the Nexus 5000 FEX tranceivers.
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Feb 21, 2012
On a 3750 you can do a show platform port-asic stats drop command. Is there a corresponding command for 6500 chassis?
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Nov 13, 2012
we are planning a Nexus datacenter project with this layout:Our experiences with Nexus switches are not so large until now and the manuals are very extensive.Both N5K´s should be connected directly with all 4 N2K switches. I did not find a layout like this in the manuals. Only a design,where only 2 N2K are connected to one N5K, with this fex config:Now I´m not sure if it is right to make a config like this with the same slots and fex´s or with different slots and fex´s.
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Jan 17, 2013
My management has tasked me to give them a high level overview of the different switching we can choose for our new building.
This is what I know so far.4 Closets, each closet has 450 ports,One MDF room that is will contain one UCS Chassis and a Nimble iSCSI SAN.
I am working on the spreadsheet and it looks like this (Not totally filled):
2960s3560x3750x45064510Approx cost (Each, 48PORT, POE+, 10G uplink, Dual PS, IP BASE)
6K7K8K45K75KMax Capacity192432432192384Backplane speed206464520520ProLeast ExpensiveStackable to 9Stackable to 9ProDual PSDual PSDual PSDual PSDual PSProLayer 3 opt
Layer 3 optDual SupsDual SupsConExpensiveExpensiveConNo Dual PSConLayer 2 OnlyCannot stack more than 4
For the MDF I would like to use 2 Nexus 5548's with FEX's, and the layer 3 daughter board. For the IDF's I was thinking of two 4010's.
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Mar 6, 2013
i cant find any difference in these two devices when i am trying to compare throughput.I need upgrade our new POP and there will be around 4900 MAC adresses in VLAN 150 and 130 MAC adresses in vlan 200.Uplink is 1 gig routed internet connection and there is 14 downlinks to separate villages.i found a few differences for eg stack interface on 3750x but i dont need it.
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Dec 27, 2012
I have a stack of 2 x 3750X switches these are running 12.2(55)SE5. I needed to add some static IP routes and found that the ‘ip routing’ command is not supported. I came across a document that stated “On switches running the LAN base feature, static routing on VLANs is supported only with Cisco IOS Release 12.2(58)SE and later.” So I have upgraded to 12.2(58)SE2, but ‘ip routing’ is still not a valid command.
The release notes state:“On the Cisco Catalyst 3560-X and 3750-X Series, it adds support for 16 static IPv4 routes in the LAN Base image.”
I have read other posts that talk about running the ‘sdm prefer routing’ command which I have done, but I am still unable to add any routes or run the ‘ip routing’ command.
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Dec 9, 2012
I have an 1811 with several subnets connected to it.I recently installed a 3750x plant and want to bring my interior routing back to it.
All the routing is handled by the 1811 via secondary interfaces on vlan1?
I have 192 ports, and subnets show up on almost all of them. None of the ports are assigned to any specific vlans. Most ports have several subnets on them.
What is the best approach to getting the 3750x to handle the routing?
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May 22, 2013
my company pay a switch 3750 X. WS-C3750X-24T-E. It uses IP services basically but I failed to configure InterVLAN routing. why interVLAN routing doesn't work on my switch?
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Jan 24, 2013
I am setting up a vm environment for a customer in my lab off site. I have two stacked 3750-x switches, a san, and threes UCS c220 M3S servers for hosts. I am trying to separate the lan traffic, san iscsi traffic, and san management traffic using vlans. The problem is i'm unable to communicate cross vlan with my current config, which I have attached to this post. The only noteworthy things in my conifg is that the ip route 0.0.0.0 0.0.0.0 192.168.83.6 is referring to a switch stack they have on site, that I will connect this stack to using the first two trunk ports on each switch, that I do not have here in the lab. I don't want to cause any confusion in why I have things set a certain way.
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Mar 28, 2012
Why does my 3750x-12s switch say it's not supported in CNA??? I upgraded to CNA 5.7.1 and still says unsupported. This device is supported or I'm just missing something.I use CNA heavily to manage our MANY vlans.
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