Monthly Archives: September 2014

Issue when configuring ISL trunk port between N5K and MDS

*+-The task is simple, to configure a FC port channel between a n5k and a MDS. but no matter what I do, the fc ports will stay offline, or stuck at initialising. My FC ISL trunk port channel just won’t

Posted in CCIE Datacenter

UCS vNIC when to enable failover?

*+-when creating a service profile in UCS, one of the options for vNIC is ” enable failover”, so when do you do it? and when not to? according to cco: The fabric interconnect associated with the component. If you want

Posted in CCIE Datacenter

Default gateway for Nexus 7000 management

*+-Just a quick note about how to configure the default gateway for N7K management.. Storage VDC Configuring a VDC for the OOB management interface mgmt0 is accomplished with the vrf context management command. However, a storage VDC does not support

Posted in CCIE Datacenter

npv traffic-map

*+-======N5K======= 1. good old trusty cco guide:  Configuring NPV Traffic Maps An NPV traffic map associates one or more NP uplink interfaces with a server interface. The switch associates the server interface with one of these NP uplinks. Note If

Posted in CCIE Datacenter

MDS: zoneset distribute

*+-Some people are confused about when and why we need to do ” zoneset distribute ” in MDS, here is the answer: •If using basic zoning, then choose Fabricxx > VSANxx > zonesetname and select FullZoneSet from the Propagation drop-down

Posted in CCIE Datacenter

Setting up FC port channel between MDS and N5K, issues, errors and fix

*+-problem: some error messages when setting up a FC port channel between a MDS and N5K: * switch(config-if)# 2014 Aug 15 10:46:31 switch %$ VDC-1 %$ %FCDOMAIN-2-EPORT_ISOLATED: %$VSAN 1000%$ Isolation of interface san-port-channel 10(reason: domains are overlapping) Topology: N5K—–int san-po10———–int

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MSTP – Inside a Region

*+-Before we begin with MSTP (Multiple Spanning Trees Protocol), I would like to note that this tutorial is going to be is divided in two parts. The first part describes how MSTP works inside a single region (the definition of

Posted in CCIE R&S

MSTP – Understanding MSTP

*+-Historical Review In the beginning, there was IEEE STP protocol, which was preceded by DEC and IBM STP variants. All of them utilized the same logic originally proposed by Radia Perlman in 80s, while she was working in DEC. The

Posted in CCIE R&S

CCIE DC: CallHome

*+-Call home is relatively straightforward and you COULD potentially mumble your way through, but if you know what each of the pieces that makes up callhome are, you can do it without thinking and score yourself some easy points in

Posted in CCIE Datacenter

CCIE DC: NPV Traffic selection

*+-We have the NP Port, which is the “uplink” from the NPV switch to the NPIV Switch (the rest of the network) and the F Ports on the NPV switch which just go to the servers. So how does the

Posted in CCIE Datacenter