sean_evershed

Member Since: Jul 28, 2004

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sean_evershed commented on Do you think VPC is too complex? in Server Networking 7 months ago

It depends on how big your VSS deployment is and what version code you are running. I worked on a...

sean_evershed commented on Do you think VPC is too complex? in Server Networking 7 months ago

It depends on your use case but I have used double-sided vPC successfuly for several years and...

sean_evershed commented on nexus 9k connection in Server Networking 1 year ago

In a typical Spine / Leaf topology the Leaf switches only have uplinks to the Spine, not to each...

sean_evershed commented on Nexus 7K M Series Module N7K-M224XP-23L 1 G Compatibility in LAN, Switching and Routing 1 year ago

This module is designed for 10Gbps only, not 1Gbps.

sean_evershed commented on Nexus SPAN to multiple destinations in Server Networking 1 year ago

There is a documented bug but no work around on the N5K is available according to this link.As far...

sean_evershed commented on BGP in Firewall in LAN, Switching and Routing 1 year ago

My guess is that maybe Cisco didn't have sufficient demand from their customers to run BGP on their...

sean_evershed commented on Fanless 24 Port Switch options? in LAN, Switching and Routing 1 year ago

You could also look at the Industrial Grade switches. The one below has 8 x PoE and16 SFP ports.I'm...

sean_evershed commented on VPC Nexus 5K - Portchannel with 1G and 10G in LAN, Switching and Routing 1 year ago

It is my understanding that this may not work.Even with standard port-channel all links in the...

sean_evershed commented on VSS with more than 2 physical switchs ? in LAN, Switching and Routing 1 year ago

You mean like a 3850 switch stack that hosts 6 x switches appearing as one virtual switch?No, that...

sean_evershed commented on VTP Transparent Mode - Nexus 9000 in WAN, Routing and Switching 1 year ago

Just to add to Vinit's post most of the Cisco documentation now recommends that you configure VTP...

sean_evershed commented on VSS with more than 2 physical switchs ? in LAN, Switching and Routing 1 year ago

You could create 3 x VSS pairs as an alternative and create port channels between these different...

sean_evershed commented on Programming language for network engineer ? in LAN, Switching and Routing 1 year ago

My tip is Python. See this link from the latest CiscoLive as one example. It compares the benefits...

sean_evershed commented on Need more 10GB ports - upgrade 6500 vs buy 4500-X? in WAN, Routing and Switching 1 year ago

I think you need to consider more than just the hardware side of your choice.It depends on your...

sean_evershed commented on Taking CCNA Data Center in Unified Computing 1 year ago

There are two exams for the CCNA DC. The two official certification guides are excellent:http://www...

sean_evershed commented on vPC peer-link (F2e and F3 on each side) in Other Data Center Subjects 1 year ago

Did some more research and found this guide. Appears that it is not supported.Not Supported—Mixing...

sean_evershed commented on vPC peer-link (F2e and F3 on each side) in Other Data Center Subjects 1 year ago

My understanding is that it should work so long as the two switches pass the vPC consistency check:...

sean_evershed commented on the best remote console switch? in Other Data Center Subjects 1 year ago

For out of band console management in the past I've deployed 2900 routers with octal cables.http://...

sean_evershed commented on why fabricpath spine switches doesn't keep all mac addresses? in Other Data Center Subjects 1 year ago

For the spine switches reducing the MAC addresses improves scalability in the DC.See below a link...

sean_evershed commented on what happens in split brain situation in case of vPC? how spanning-tree loops are avoided? in Other Data Center Subjects 1 year ago

For a good explanation of that scenario see the following link fo detials:https://supportforums....

sean_evershed commented on nexus switches question in Other Data Center Subjects 1 year ago

ACI brings many of the benefits of cloud automation tools and Software Defined Networking to Cisco...

sean_evershed commented on Nexus 9000 and 2000 series fabric extenders in Other Data Center Subjects 1 year ago

See below a link that outlines the different model Fex's supported by the N9K:http://www.cisco.com/...

sean_evershed commented on Cisco ACE - Replacement? in Other Data Center Subjects 1 year ago

For load balancing see the Citrix Netscaler:http://www.cisco.com/c/en/us/products/collateral/...

sean_evershed commented on MPLS Technology will be no longer used by immerging Cloud/data center Technology? in Other Data Center Subjects 1 year ago

It depends upon which cloud technologies you are talking about.MPLS has a long and proven track...

sean_evershed commented on issu upgrade procedure for NX-OS 5.2 to 6.2.12 on 7010 (redundent sup & chassis) in Other Data Center Subjects 1 year ago

See this link for the upgrade procedure:http://www.cisco.com/c/en/us/support/switches/nexus-7000-...

sean_evershed commented on blocking facebook on cisco router in LAN, Switching and Routing 1 year ago

You can use NBAR to block a website. See below an example.It will work however only on HTTP sites...

sean_evershed commented on What is functional difference between VSS and VPC in Nexus ? in WAN, Routing and Switching 1 year ago

I would like to raise one additional point concerning vPC. With a double sided vPC topology the...

sean_evershed commented on Lab Switch recommendation needed in LAN, Switching and Routing 1 year ago

Hardware can be expensive when you consider the full cost of owning and maintaining the equipment....

sean_evershed commented on Can different model Nexus be configured with vPC? in Other Data Center Subjects 1 year ago

Thanks for the update jaos.

sean_evershed commented on Python script for no shut interfaces with timer in Other Data Center Subjects 1 year ago

You can find some Cisco N5K Python scripts here. Potentially you could modify one of them to suit...

sean_evershed commented on IP restructuring project for a enterprise in Other Data Center Subjects 1 year ago

One of the major problems you may encounter if you have them are the in-house apps developers....

sean_evershed commented on Nexus 5548 and L3 in Server Networking 1 year ago

Without the L3 daughter card you have in effect just a Layer 2 switch, no layer 3 functionality.See...

sean_evershed commented on Can different model Nexus be configured with vPC? in Other Data Center Subjects 1 year ago

Personally I've never tried this scenario but potentially it may work. According to this link a...

sean_evershed commented on VPC between VDC's is this supported in Other Data Center Subjects 1 year ago

See this link for detailshttps://learningnetwork.cisco.com/docs/DOC-23972

sean_evershed commented on create new vrf in N5548 in LAN, Switching and Routing 1 year ago

You need a Layer 3 daughter card for VRF. A VRF can only be defined on a Layer 3 interface.It looks...

sean_evershed commented on VPC peer-link Nexus 7k or 5k. in Other Data Center Subjects 1 year ago

See this link for details. It is a strong recommendation to use two links. As you said for both...

sean_evershed commented on Reliability of DMVPN as primary link in WAN, Routing and Switching 1 year ago

Sure, a single internet link will provide an availability of 99.9% or less. However a MPLS link is...

sean_evershed commented on Nexus9000 Problem in Other Data Center Subjects 1 year ago

It's not N9K problem but an IPv6 problem.You need to find out how the other IPv6 device on VLAN 999...

sean_evershed commented on Nexus 5000K peer-link and keep-alive configuratión in Other Data Center Subjects 1 year ago

According to this link below there is no distance limitation for vPC.https://supportforums.cisco....

sean_evershed commented on Nexus 7000 Fex dual homeTopologies in Other Data Center Subjects 1 year ago

See this data sheet, Figure 7. According to the document N7Ks only supports Server vPC.http://www....

sean_evershed commented on Why client needs MPLS configuration on his side ? in WAN, Routing and Switching 1 year ago

The CE is the Customer Premises Equipment (CPE).

sean_evershed commented on Switch temperature problem in WAN, Routing and Switching 1 year ago

This post offers some helpful advice for the same model switch.https://supportforums.cisco.com/...

sean_evershed commented on Why client needs MPLS configuration on his side ? in WAN, Routing and Switching 1 year ago

Yes, RT will help prevent that.MPLS VPN is being used now within large campus networks. See below...

sean_evershed commented on Switch temperature problem in WAN, Routing and Switching 1 year ago

If the threshold was configurable I would avoid changing it.My understanding is that Cisco does...

sean_evershed commented on Why client needs MPLS configuration on his side ? in WAN, Routing and Switching 1 year ago

Do you mean MPLS VPN?If so then this makes it more complicated and expensive for the customer. As a...

sean_evershed commented on Difference between Port Channel and VPc in Other Data Center Subjects 1 year ago

One of the key differentiators between the two technologies is that port channels support both...

sean_evershed commented on Infrastructure Nexus 7000 Series or 7700 Series. in Other Data Center Subjects 1 year ago

The answer is driven by your business needs.Install 9Ks if you need to leverage their SDN and ACI...

sean_evershed commented on Cisco 6880-X for Data Center Connectivity in Other Data Center Subjects 1 year ago

According to Table 8 below the 6880-X does support copper, it supports GLC-T SFPs.http://www.cisco....

sean_evershed commented on ACI - APIC installation in Other Data Center Subjects 1 year ago

There is an ACI simulator available. See this post for details:http://www.linkedin.com/pulse/...

sean_evershed commented on Is it possible or should I ask, has anyone setup a Nexus Lab on Non-Cisco Hardware? in LAN, Switching and Routing 1 year ago

For VIRL see this link for details. NX-OSv has only limited functionality with VIRL.For example it...

sean_evershed commented on python script for Fabric Path Vlan audit? in LAN, Switching and Routing 1 year ago

Have you tried looking on Github? You might a Python script that you can re-use.

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