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Cisco – Enhanced zoning

Main differences between enhanced zone database and basic zoning In basic zoning, if two administrators are making changes to the fabric at the same time, there is a chance of one administrator’s changes being overwritten by other. Enhanced zoning prevents this by having a single configuration session for the entire fabric to ensure consistency. In […]

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Cisco – Operations

How to bring up FCIP connections A fluctuation in Ethernet connection can cause the FCIP connection to go offline. If Ethernet connections comes online again, FCIP will still stay offline. It can be brought online as below: BEFORE # show fcip summary ——————————————————————————- Tun prof    Eth-if    peer-ip       Status T W T Enc Comp  Bandwidth   rtt                                            E A […]

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Brocade – Access Gateway (NPIV)

HP Chasssis should have 2 Brocade switches with 8 ports – one switch per fabric. The chassis can also have up to 14 blades in it. The question is – how does each blade manage to login to fabric with its own unique WWN when none of them are connected directly to the fabric? Theory […]

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Cisco – NPIV – Uplink from HP Chassis Cisco switches

HP Chasssis should have 2 Cisco switches with 8 ports – one switch per fabric. It can also have up to 16 blades in it. The question is – how does each blade manage to login to fabric with its own unique WWN when none of them are connected directly to the fabric? Theory is: […]

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Cisco – Code Upgrade/Downgrade

Code upgrade involves uploading the binaries to the switch via tftp and installing it. Below is the procedure to upgrade the code on HP chassis with Cisco switch. • On Cisco switches, nvram area is referred to as bootflash. The images reside in this area. Check the current version as below (3.1.2a in following example): […]

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Cisco – CLI

Switch Configuration Set a user password switch# username admin password NEWPASSWORD Set the clock and timezone switch# clock timezone GMT 0 0 switch# clock summer-time BST 5 Sunday march 02:00 5 Sunday October 03:00 60 Set NTP server switch# ntp server 192.168.1.1 Set name server (DNS) switch# ip name-server DNS_SERVER_IP Set domain name switch# ip […]

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