Cisco Switching/Routing :: Does Nexus 7K Support Multiple VDCs Sharing Ports On Single Line Card
Mar 19, 2013
Does Nexus 7K support Multiple VDCs sharing ports on a single line card. One of our cisco parnter engineers stated that cisco doenst recommend using same line card for multiple VDCs.The second VDC (Non-Default VDC) will be used four our Outside, and DMZ Segment, and to phyiscally segregate our Firewall from our Internal/Inside Core Switch without using a physical DMZ Switch.I know Cisco used the Nexus in this way in their PCI DSS 2.0 Compliance Document. Module is N7K-M148GT-11L
Mod Ports Module-Type Model Status
--- ----- -------------------------------- ------------------ ------------
1 48 10/100/1000 Mbps Ethernet XL Mod N7K-M148GT-11L
Mod Ports Module-Type Model Status
--- ----- -------------------------------- ------------------ ------------
1 48 10/100/1000 Mbps Ethernet XL Mod N7K-M148GT-11L
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Mar 23, 2012
Is it possible to rename an existing VDC on Nexus7000 without deleting it and creating it again with the new name ?
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Nov 13, 2011
I have a customer with three rooms where teh access layer aggregation switches are run back to.
Access Switch Stack A -> room 1 + room 2
Access Switch Stack B -> room 2 + room 3
Is it possible to have three Nexus 7000s ie one in each room (1,2 and 3) and have them setup like this:
Nexus 7000#1 vPC domain 1
Nexus 7000#2 vPC domain 1 + vPC domain 2
Nexus 7000#3 vPC domain 2
Thus gving all access switch stacks redundant links to the core withouit spanning tree.
I know its not ideal but its a campus site and thats how the existing fibre runs go.
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Aug 6, 2012
On a number of 6500 chassis it appears that linecard 3 did exist at somepoint, but was removed.Problem is that when issuing the 'show int desc' or 'show ip int brie' the ports for the still appear, and indeed same with 'show run' and 'show conf'.
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Nov 5, 2012
i would like to monitor traffic between multiple source ports to multiple destination ports on a nexus 7k. i lknow when you set up monitor session is between source and destination (laptop or traffic analyser) but is there a way i can set up between source and multiple destination ports and capture that traffic ?
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Oct 13, 2011
About a week ago I changed over 9 HP Procurve switches that were previously stacking in series (yeah, daisy-chain) to a Access-Distribution type scenario with 2 (or 4 on server switches) Gb ports on each switch Trunked together connecting to a central full 48x Gb switch.
During this I updated firmwares on all the switches (most still on their shipped 5-8 year old versions) to the latest stable release (and in the process found out that HP switch firmware is absolutely brutal and untested - See ProCurve 2510G FW 11.16 as an example) .
I saw vast improvements across the network immediately after the change (wow, really? 9 48-port switches effectively sharing a single 1Gb line to the servers and internet was a bit slow? Don't tell my co-workers, they don't think that's possible ) .
The only thing that I didn't see an improvement in was on some Linux and BSD servers, which would top out at 11MB/s doing a SMB (SAMBA) transfer. These are managed systems part of our business system, but we still need to be able to pull local backups for ourselves. So I contacted our vendor. The vendor confirmed that the line speed is showing as 1000T-FDx (same as the switch is showing).
Vendor is now claiming that after these changes were put in place, the speed on their servers (and their servers ONLY) was reduced to a maximum of 5MB/s (~60Mb/s?) doing rsync transfers between themselves. And they are all on the same 2510 (48 port all 10/100/1000), which makes absolutely no sense whatsoever to me. Furthermore this is on the ONLY switch on the entire network that had an updated firmware already installed - that's not even a possibility here.
I put some windows servers on that switch and can get 60MB/s+ all day (SMB transfers). I've also tried from their one server that I can access to doing an rsync or scp to another BSD box, and max out at 15MB/s (with 100% CPU usage on the test box - I'm assuming the decryption is pretty heavy?)There is absolutely no QoS, limiting, or any possibility of throttling the links the servers are on the switch. There are no excessive broadcasts saturating it, and the ports and cables test fine.
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Dec 2, 2012
Can we use single ospf process for multiple VRFs in Nexus 7k. If yes is there a document to show how ?
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Jul 17, 2012
I have two data centres connected via a L2 DWDM, my manager wants to look into using OTV to get rid of the layer 2 broadcasting issues.
Problem is the DWDM is 1000BaseSX, which is only supported on the N7K-F132XP-15. (and the N7K-M148GS-11 but that doesn't support FCOE, so many bloody caveats). From what I can gather OTV is not supported on the N7K-F132XP-15.
Is it possible to terminate the DWDM on the F1 card & loop another port from the F1 to a port on the N7K-M148GT-11 & run OTV on the M1????
Either using VDCs or just an isolated VLAN on the F1. Is there any better way to do this? Hardware has not yet been purchased.
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May 21, 2013
We are migrating from a nother brand to an ASA Cluster running 8.4.5
We have a web-server on an inside interface listening on a non standard port - 20111. We have created a static NAT translating the public ip to the private, so If I do http://public-ip:20111 it works. (we are using a seperate public IP for this service only).
Now I need to create a NAT rule that will forward requests on BOTH port 80 and 443 to the same private ip and the same port number (20111)
The Private address is 10.99.250.20 and the "public" (I've replaced it in this example) is 172.16.16.16 I have managed to create a NAT that will translate 443 to 20111:
object network 10.99.250.20 nat (Private-DMZ,Outside) static 172.16.16.16 service tcp 20111 https
But if I try to add another rule like: nat (Private-DMZ,Outside) static 172.16.16.16 service tcp 20111 http It will simply replace the first one.
Is it possible to redirect both 80 and 443 from outside to the same port number and same IP on the inside?
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Jan 6, 2013
I'm looking to see if it is possible to run a vPC between to vDC's on a single 7010? We have a Production setup that runs dual 7010's with vPC's between the chassis but in our lab we only have a single 7010 with a 32 port 10gig module. I was thinking that maybe we could create 4 vDC's on the 7010 and run a vPC between the vDC's.
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Aug 29, 2012
I read the document, [URL]
[
Q.I have Cisco 6700 Series line cards today with Centralized Forwarding Cards (CFCs). Are these line cards supported in a Cisco Supervisor Engine 2T system?
#
A. A Cisco Supervisor Engine 2T system will support all Cisco 6700 Series line cards with CFCs.
]
So, As long as the 67XX line card is using CFC, it is compatible with Sup-2T.
I also find the IOS release note indicate the 6704-10G with CFC is supported by Sup-2T, but it require 512M memory.
[URL]
The bug details is not disclosed. So I further search what the default memory size of the WS-F6700-CFC is, then I found here says it is only supported by Sup720 and no memory upgrade option, which means must upgrade to DFC4, in another words, it is not compatible with Sup-2T
[URL]
WS-F6700-CFC:
Centralized Forwarding Card (CFC) for use on WS-X67xx Ethernet modules. This daughter card is supported only by the Supervisor Engine 720. There are no memory options for this daughter card. default memory: 256M
So my question is: whether “WS-X6724-SFP with CFC” and “WS-X6704-10G with CFC” compatible with Sup-2T without upgrading to DFC4 daughter card, and do they support in VSS-2T?
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Oct 18, 2012
I urgently want to replace a faulty line card WS-X6748-SFP with a new one. The switch concern is a 5609-V-E operating in Virtual Switching System mode.How long do you suggest the down time will be?
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Jun 30, 2008
Cisco Catalyst 6509 Chassis.We have moved a line card from slot 8 to slot 6, but config remains for the line card in slot 8 and nothing is seen in slot 6.
We are running on IOS Verison 12.2 (33SXH2A) i.e. VSS.Blade model number is WS-X6748.
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Mar 20, 2012
when replacing a line card on a 6500, i gather there is no config stored on the card, its all held on the sup, so when i put in another card the config will be the same?
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Apr 14, 2013
I wanted to know that in nexus 7009, can i use mix of F2/M1/M2 series line cards ? will they work with each other ? Lets say i have F2 line card and M2 line card, will servers attached to them will communicate with each other ?
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Nov 28, 2011
direct me to a document detailing the order that line cards are supposed to boot in a 6500? I'm noticing random boot sequences in some of my chassis,?Note: We currently run Sup720 3CXL for the most part.
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Jan 26, 2013
The WS-X68xx series line card has a fabric of 40Gbps and a 16 Port 10GE has a 4:1 oversubscription rate. The WS-X6908-10G has a fabric speed of 80Gbps and has a 1:1 oversubscription rate.
If I mixed the 68xx and 69xx series line card, do I get 80Gbps for the 6900x and 40gbps for the 68xx line card? Or would the 69xx series line card be downgraded to 40Gbps?
From my understanding, the 68xx series has a DFC card and thus the fabric speed operates independently.
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May 27, 2012
We currently have a WS-C6506 chassis with a line-card WS-X6408A-GBIC. Currently we need to replace the chassis by a Ws-6504-E and also the line-card. My question is: What must buy line-card and meets the same specifications of WS-X6408A-GBIC?.
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Jan 14, 2013
We are planning to replace a few line cards in the existing 6509-E chassis. The sup installed is a VS-S720-10G-3C but the line cards are legacy. As a result we are not able to enable the VSS functionality. We are looking to replace the existing line cards with the following:
1. 1 x WS-X6716-10G-3C
2. 1 x WS-X6724-SFP
3. 4 x WS-X6724-GE-TX
What are the requirements in terms of IOS and Roman.
The current IOS is: Cisco IOS Software, s72033_rp Software (s72033_rp-IPSERVICESK9_WAN-M), Version 12.2(33)SXI2a, RELEASE SOFTWARE (fc2)
And the ROM Version is: ROM: System Bootstrap, Version 12.2(17r)SX7, RELEASE SOFTWARE (fc1)
Do I need an upgrade?
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May 28, 2013
I recently changed the entire configuration on two 6509 switches, and the fibre modules on slot 7 and 8 have gone down on BOTH switches. It would be easy to say that its a hardware fault but I cannot understand how module 7 and 8 can go down on both switches. Initially I thought it maybe due to IOS bug 22-33.SXI2a.bin" so I upgraded it to s72033-advipservicesk9_wan-mz.122-18.SXF12a.bin but it still down.These are the actions I have carrried out to try resolve the issue:
- Reverted back to orginal configs but no luck
- Tried to use "power enable" command but the status light on both modules seems to turn red and then go off again.
- I have also tried to put one of the fibre modules into a different slot but no joy
- Upgraded the IOS from 22-33.SXI2a. to 122-18.SXF12a
I am sure that hardware fault cannot occur on BOTH modules 7 & 8 on BOTH switches after config change.The error in the log shows that modules "failed to bring online because of registration timer event". I understand this means that it is unable to download the image within the allocated time. [code]
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Jan 18, 2012
I have been asked to upgrade the IOS images on three 4506 switches with a single Supervisor IV engine in each to allow for SSH2 access.The current image is cat4000-i5s-mz.122-25.EWA.bin..I have uploaded cat4000-i5k91s-mz.122-25.EWA14.bin to bootflash on each Supervisor engine.The ROM on each SUP IV is 12.1(20r). I don't want to have to upgrade the ROM version.Will the cat4000-i5k91s-mz.122-25.EWA14.bin image retain all the current features of the current image and provide SSH2 support, without requiring a ROM upgrade?Each switch has 512 Mb of RAM.If this image will accomplish what I want, what are the commands used to select the new image from bootflash. I'm familiar with image updates on fixed chassis switches using the boot system flash command.
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Oct 11, 2012
I have a new building to add to our campus and I have been encouraged to run single mode fiber. All of my other buildings are connected with multi-mode fiber. I just want to make sure i will not have an issue if I run single mode to the new building with SM SFP's.
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Mar 12, 2012
I would like to know if it is possible to assign a 3rd IP address to my end user vlan. Basically the 45xx acts as my end user gateway and has been confirgured as below
interface VlanXX
description Main Vlan
ip address 2.X.X.X 255.255.255.0 secondary
ip address 1.X.X.X 255.255.252.0
[Code].....
Here, due to IP address exhaustion in my end-user network, i want to add one more subnet X.X.X.X/22 to my network and assign one IP more from this range to the above vlan to act as the gateway IP.
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Jan 17, 2012
Is it possible to use a 10GE interface on a sup720 and an interface from a 671610GE line card and create a port channel. I haven't found specific documentation on CCO stating you can. I have found the QOS queuing is differnet between the sup and line card.
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Mar 26, 2012
Cisco announced EOL for ws-x6148A-GE-45AF line card and proposed WS-X6148E-GE-45AT. However this card seems not to be supported by the SUP2T-10G supervisor. Which alternative card should I take for this EOL line card, or can I use the proposed line card (use extra daughter card DFC4)?
I'm looking for an alternative line card for the 650x-E chassis with Supervisor 2T iso 6148-GE-45AF
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Mar 5, 2012
I'm looking for switches that support single mode fiber connections and would like to know if "WS-C3750-FS-S Catalyst 3750 24 100BaseFX + 2 SFP" and "WS-C3750G-12S-S Catalyst 3750 12 SFP" can serve the purpose?
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Aug 4, 2012
I am trying to limit the incoming and outgoing traffic on a l2 port to 8mbps for a ip subnet within the nexus 7000. The port is connected to my ISP router which has a bandwidth of 20mbps.Policing won't work on a l2 Port and shaping cannot be applied on a port level. url...I have been reading thru the qos guide for nexus release v6 and have problems understanding the different queues.
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Sep 17, 2012
We are currently using two Nexus 5548UP's as our Datacenter Network Core. I have a pretty simple objective: I would like to enable Jumbo Frames on a single VLAN only(VLAN 65). This VLAN is used strictly for backups. I do not want to enable Jumbo Frames on the other VLANs(VLANs 1-10). Im not sure what the best way to do this is.....or if it is even possible but I am hoping to get some configuration examples.
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May 28, 2012
Could I configure and connect 3 Dell switches to an ASA-5525 Firewall which has got 8 interfaces.
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Apr 11, 2012
I would like to configure a 3750 switch port to be able to use two vlans. I know you can do this with a voice and data vlan, but what about two data vlans ? Say I have two devices, one on a 10 subnet and the other on a 172 subnet, but i only have one wall jack for both devices to plug into. So I use a mini switch to connect both devices and connect the switch to the wall jack; and of course this all leads back to one switch port. When I go to enter the switchport access vlan 172 cmd, how would I also make it so the device on the 10 subnet could route out ?
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Jun 24, 2012
I need to pull a WS-X4712-SFP+E line card from an online 4507 chassis, can this be done, or does it need to be offline?
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Oct 12, 2012
I've 4500 Core Switch with 4507R chassis, Sup V-10GE(WS-X4516-10GE) along with 2 WS-X4306-GB line Cards, but now I require a line card for 14 more fiber up links and I cannot go with 3 of 4306 as there are only 2 slots left. I've checked and found that E series line cards does not work with Sup V Engine.
As per the link below, I found that "WS-X4448-GB-SFP" is compatible..
[ URL]
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Apr 15, 2012
I am writing with regard to a high memory utilization that we have on a pair of line card WS-X6748-GE-TX and WS-X6724-SFP for a VSS 6500. I am enclosing a little part of the "show tech"of this VSS 6500 where is possible to see the high memory utilization of the line cards 1/1, 1/2, 2/1, and 2/2, in despite of having some ports in state connected. In addition of this, the IOS installed on VSS 6500 is s72033-ipservicesk9_wan-vz.122-33.SXI6.bin for checking if there are some bugs affecting the behaviour of the Switch for this case.
System Resources
PFC operating mode: PFC3C
Supervisor redundancy mode: administratively sso, operationally sso
Switching resources: Sw/Mod Part number Series CEF mode
1/1 WS-X6748-GE-TX CEF720 CEF
1/2 WS-X6724-SFP CEF720 CEF
[code]....
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