Category Archives: Data Center

SFP validation failed on Nexus

If you come across to an issue like this you are about to fix before that you think. After plug in SFP (1 gig copper) on a SFP+ port i got an error saying “SFP validation failed”.

N3K# sh int e1/45
Ethernet1/45 is down (SFP validation failed)
Dedicated Interface
Hardware: 100/1000/10000/40000 Ethernet, address: 00d7.8fa9.34b4 (bia 00d7.8fa
9.34b4)
MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA
Port mode is trunk
Full-duplex, 10 Gb/s, media type is 1G
Beacon is turned off
Input flow-control is off, output flow-control is off
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
Last link flapped never
Last clearing of “show interface” counters never
0 interface resets
Load-Interval #1: 30 seconds
30 seconds input rate 0 bits/sec, 0 packets/sec
30 seconds output rate 0 bits/sec, 0 packets/sec
Load-Interval #2: 5 minute (300 seconds)
input rate 0 bps, 0 pps; output rate 0 bps, 0 pps

So we have to force the interface speed like old days.

N3K(config)# interface Ethernet1/45
N3K(config-if)# speed 1000
N3K(config-if)# no shut

Plugin the cable and done!

N3K(config-if)# show int e1/45
Ethernet1/45 is down (Link not connected)
Dedicated Interface
Hardware: 100/1000/10000/40000 Ethernet, address: 00d7.8fa9.34b4 (bia 00d7.8fa
9.34b4)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA
Port mode is trunk
Full-duplex, 1000 Mb/s, media type is 1G

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Next-Gen SAN reaching 32Gbps

Cisco MDS still evolving as a platform, and Cisco announced technology innovations for next-generation storage networking, giving 32Gb fibre channel performance across a unified MDS storage director and UCS. Cisco storage solutions can help the network adapt to new storage trends such as flash, NVMe, and converged infrastructure workloads.

You can see here the full announcement.

 

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Upgrade Cisco Blade Switch

Applying a major upgrade between 12.x and 15.x code, backup your config first before go ahead!

Checking the actual version

 

SW01#sh ver | i IOS
Cisco IOS Software, CBS30X0 Software (CBS30X0-LANBASEK9-M), Version 12.2(35)SE, RELEASE SOFTWARE (fc2)SW01#show boot
BOOT path-list      : flash:cbs30x0-lanbase-mz.122-35.SE/cbs30x0-lanbase-mz.122-35.SE.bin
Config file         : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break        : no
Manual Boot         : no
HELPER path-list    :
Auto upgrade        : yes
Auto upgrade path   :

Downloading and extracting the TAR file from your TFTP

SW01#download-sw tftp:10.1.0.103/cbs30x0-ipbase-tar.150-2.SE6.tar
Loading cbs30x0-ipbase-tar.150-2.SE6.tar from 10.1.0.103 (via FastEthernet0): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(omitted for brevity)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK – 15073280 bytes]

Loading cbs30x0-ipbase-tar.150-2.SE6.tar from 10.1.0.103 (via FastEthernet0): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(omitted for brevity)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
examining image…
extracting info (107 bytes)
extracting cbs30x0-ipbase-mz.150-2.SE6/info (372 bytes)
extracting info (107 bytes)

Stacking Version Number: 1.49

System Type:             0x00000000
Ios Image File Size:   0x00BEF200
Total Image File Size: 0x00E60200
Minimum Dram required: 0x08000000
Image Suffix:          ipbase-150-2.SE6
Image Directory:       cbs30x0-ipbase-mz.150-2.SE6
Image Name:            cbs30x0-ipbase-mz.150-2.SE6.bin
Image Feature:         IP|LAYER_3|MIN_DRAM_MEG=128

Old image for switch 1: unknown

Extracting images from archive into flash…
cbs30x0-ipbase-mz.150-2.SE6/ (directory)
extracting cbs30x0-ipbase-mz.150-2.SE6/info (372 bytes)
cbs30x0-ipbase-mz.150-2.SE6/html/ (directory)
extracting cbs30x0-ipbase-mz.150-2.SE6/html/frmwrkResource.htm (950 bytes)
extracting cbs30x0-ipbase-mz.150-2.SE6/html/menu.shtml (8324 bytes)
extracting cbs30x0-ipbase-mz.150-2.SE6/html/portstats.js (8142 bytes)
(omitted for brevity)
extracting cbs30x0-ipbase-mz.150-2.SE6/cbs30x0-ipbase-mz.150-2.SE6.bin (12505683 bytes)
extracting info (107 bytes)

Installing (renaming): `flash:update/cbs30x0-ipbase-mz.150-2.SE6′ ->
`flash:cbs30x0-ipbase-mz.150-2.SE6′
New software image installed in flash:cbs30x0-ipbase-mz.150-2.SE6

All software images installed.

Boot updated with the new image & Reboot

SW01#show boot
BOOT path-list      : flash:cbs30x0-ipbase-mz.150-2.SE6/cbs30x0-ipbase-mz.150-2.SE6.bin
Config file         : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break        : no
Manual Boot         : no
HELPER path-list    :
Auto upgrade        : yes
Auto upgrade path   :SW01#reload
Proceed with reload? [confirm]

New code is Live!

SW01#sh ver | i IOS
Cisco IOS Software, CBS30X0 Software (CBS30X0-IPBASE-M), Version 15.0(2)SE6, RELEASE SOFTWARE (fc2)

Compare the running config with the Backup one we did previously zero differences, so another successful upgrade!

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Juniper Networks Certified Expert Data Center (JNCIE-DC) Open for Registration

At the pinnacle of the Data Center certification track is the 1-day JNCIE-DC practical exam. This exam is designed to validate the networking professionals’ ability to deploy, configure, manage, and troubleshoot Junos-based platforms. Throughout this 8-hour practical exam, candidates will build a data center network consisting of multiple MX Series and QFX Series devices. Successful candidates will perform system configuration on all devices including management capabilities, a Clos IP fabric, EVPN/VXVLAN, DCI, and CoS features.

The JNCIE-DC is valid for three years. Recertification is achieved by passing the current version of the JNCIP-DC exam or by attending a corresponding course.

Exam Overview

Exam code: JPR-980

Lab Exam (Hands-on Lab)

Held at selected Juniper Networks testing centers

Exam length: 8 hours

Prerequisite certification: JNCIP-DC

The lab will be available 3 April 2017

Junos Software Release:

  • MX80 3D Universal Edge Router: 16.1
  • QFX5100 Ethernet Switch: 14.1
  • vMX 3D Universal Edge Router: 15.1
  • vSRX Services Gateway: 12.1

Topics for the Exam

    Management

  • On-box Scripts
    • Event scripts
    • Commit scripts
    • Operation scripts
  • Junos Space
    • Auto discover
    • Configuration management
  • ZTP
    • Initial provisioning of QFX switches using a CentOS DHCP server
  • NETCONF

   Layer 2 Underlay

  • VCF configurations
    • Master and backup RE
    • Inactive state VCF member
    • VCP port setup
  • Convert interface speed
    • 40G to 4x10G
  • MC-LAG
    • Interchassis link (ICL) redundancy
    • IRB MAC Sync
    • Layer 3 gateway function
    • ICCP

Layer 3 Underlay

  • BGP for an IP Clos fabric
    • Clos IP fabric
    • Loopback interface for routing updates
    • EBGP in an IP fabric
    • Avoid blackholing traffic
    • Routing policies

    Controllerless Overlay

  • EVPN control plane
    • EVPN signaling
    • EVPN routes
    • VNI target communities
    • Prevent suboptimal routing
    • Inter-VRF routing
    • Automatic route-target
    • Load balancing
    • Anycast Gateway
  • EVPN/VXLAN
    • Virtual tunnel end point function
    • VXLAN learning process
    • MAC address learning
    • Passing traffic between VNIs

    Data Center Interconnect (DCI)

  • DCI
    • EVPN signaled VXLAN
    • L3VPN implementation
    • EVPN MPLS

    Security

  • Control plane protection
    • Firewall filters
    • Role-base access control (RBAC)
  • SRX Series device as a gateway
    • Security zones
    • Security policies

    Class of Service (CoS)

  • CoS features
    • Loss priority
    • Rewrite rules
    • Shaping and policing
    • Scheduling
    • BA and MF classification
    • Drop profiles
    • Traffic control profiles

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Cisco Data Center Associate and Professional Level Updated from v1.0 to v6.0 Part 2

This is the seconds part of the Cisco Data Center Revision v1 to v6

CCNP Overview

642-999 DCUCI
Last Day to Test
is July 3, 2017

OR   300-175 DCUCI

                                                                                          AND

642-997 DCUFI
Last Day to Test
is July 3, 2017

OR   300-165 DCII

                                                                                         AND

300-170 DCVAI

                                                                                         AND

642-998 DCUCD
Last Day to Test
is July 3, 2017

AND 642-996 DCUFD
Last Day to Test
is July 3, 2017

OR 300-160 DCID

                                                                                              OR

642-035 DCUCT
Last Day to Test
is July 3, 2017

AND 642-980 DCUFT
Last Day to Test
is July 3, 2017

OR 300-180 DCIT

Implementing Cisco Data Center Unified Computing (DCUCI)

DCUCI Exam Comparison

Outlined below are highlights of some of the key topic changes that have been made to the exam and training curriculum.

Key Topics Removed (or Moved):

  • Product-specific knowledge for B-Series and C-Series UCS Servers (three domains)
  • Implement UCS Server Virtualization Features (Domain 5) replaced by task 3.1, Implement Integration of Centralized Management

Key Topics Added or Changed:

  • Automation added, including Implementing integration of centralized management and scripting tools
  • Increased emphasis on data center security (a dedicated domain)
  • Increased emphasis on data center storage connectivity (a dedicated domain), including FCoE

 

Implementing Cisco Data Center Infrastructure (DCII)

DCII Exam Comparison

Outlined below are the key topics that have been removed and added to the exam and training curriculum.

Key Topics Removed:

  • Product-specific knowledge for Cisco Nexus switches and Cisco NX-OS Software
  • Network virtualization focus reduced (removed Cisco VM-FEX, Nexus integration with vCenter Manager, Cisco Adapter FEX)

Key Topics Added or Significantly Increased:

  • Coverage of new technology, VXLAN, added in Implement Data Center Protocols
  • Increased emphasis on routing, including these new topics: OSPFv2, OSPFv3, and ISIS protocols
  • Broader topic coverage on data center infrastructure security, including these new topics: ACLs, CoPP, fabric binding, and port security

 

Implementing Cisco Data Center Virtualization and Automation (DCVAI)

DCVAI Exam

Outlined below are highlights of some of the key topics that are included in the exam and training curriculum.

Key topics removed compared to DCUFI Topic 6.0:

  • Adapter FEX, VM-FEX, and Nexus vCenter Manager integration

Key Topics added compared to DCUFI Topic 6.0:

  • Added new domains focused on implementation for infrastructure automation, Application Centric Infrastructure, Application Centric infrastructure network resources, and Application Centric Infrastructure management and monitoring

Designing Cisco Data Center Infrastructure (DCID)

DCID Exam Comparison

Outlined below are highlights of some of the key changes that have been made to the exam and training curriculum.

Key Topics Removed (or Moved):

  • Design methodology and data center structure and modularity removed, because basic design knowledge is assumed for CCNP Data Center candidates
  • Troubleshooting topics removed; now covered in 300-180 DCIT
  • Security design not covered; the focus for data center candidates on data center security implementation, which is included in 300-165 DCII, and troubleshooting, which is included in 300-180 DCIT

Key Topics Added or Changed:

  • Data center unified fabric and unified computing design topics combined into one exam, reflecting the combined skills that are expected of a data center IT professional

Troubleshooting Cisco Data Center Infrastructure (DCIT)

DCIT Exam Comparison

Outlined below are highlights of some of the key changes that have been made to the exam and training curriculum.

Key Topics Removed (or Moved):

  • Removed product-specific coverage of Cisco UCS B-Series and C-Series servers; for example, Troubleshooting Data Center Compute Platforms now concentrated into one domain by removing product-specific topics

Key Topics Added or Changed:

  • Combined the Data Center Unified Fabric and Unified Computing troubleshooting topics into one exam, reflecting the combined skills that are expected of a data center IT professional
  • Troubleshooting routing protocols added
  • Troubleshooting virtual switching technologies added
  • Application Centric Infrastructure added
  • Troubleshooting data center LAN and SAN security and compute security added

References:

CCNA Data Center

CCNP Data Center

Cisco Data Center Associate and Professional Level Updated from v1.0 to v6.0 Part 1

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