Category Archives: Cisco

Foolproof Validation of the ACI Access Policy Chain

Have you ever come across an invalid-vlan or invalid-path error in an ACI Endpoint Group, L3Out or Tenant? The chances are, there is a problem in your Access Policy Chain – i.e. the collection of Access Policies that you created before … Continue reading

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HyperFlex’s new snapshot mechanism matters. Here’s why, and what Cisco forgot.

Losing the Hyperflex SENTINEL snapshot is great, but Cisco dropped the ball when it came to management options in the HyperFlex Connect management app, I hope they fix this soon. In the meantime, I’ve created a bunch of PowerCLI scripts you can use. Continue reading

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Are Interface Descriptions in ACI using magic?

If there are TWO ways of getting a description into the Physical Interface Description, which one wins? Let’s have a duel. Continue reading

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Hyperflex Post Install script fixer

The hx_post_install script that is used during the Cisco HyperFlex install process does NOT work the way it should. The fix is as easy as cut-and-paste the following into your ssh session. Continue reading

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Webex multi-screen support – where is it Cisco?

I’d like Cisco to move to a default two window model when screen sharing is active Continue reading

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Cisco has re-vamped their ACI Docs pages. Here’s what I think.

What Cisco has done is given us not just a prettier version, but in many cases more useable too Continue reading

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ACI and the HyperFlex Hiccup Cure

In this post I’ll show you how I reduced that failover time for HyperFlex Connect to about one minute. Continue reading

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ACI and the HyperFlex Hiccup

the problem relates to how Cisco HyperFlex uses a floating IP address across multiple Storage Controller VM MAC addresses, and how ACI maintains the IP to MAC address table Continue reading

Posted in ACI, Best Preactices, Cisco, GNS3 WorkBench, Hyperflex | Tagged , , | 3 Comments

New APIC ACI 5.1 firmware – Cisco have gone colloquial

This is an absolute affirmation that Cisco only cares about North American users Continue reading

Posted in ACI, Cisco, rant | Tagged , , | 1 Comment

Making the most of ACI when routing between tenants via a Firewall

I’ll show you how you can enhance your ACI migration by using some ACI features that are practically impossible to implement on L3 Firewalls Continue reading

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