Category Archives: MDS

What will FCoE mean for the Cisco MDS?

Cisco has already announced the new Supervisor-2B which advertises support for FCoE on the Cisco MDS.  But what does that mean exactly?  I don’t know for sure, because there really isn’t much information on Cisco to document the FCoE capabilities … Continue reading

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An FCIP tunnel made of Ethernet Port Channels or a FC Port Channel made of FCIP tunnels, which is better?

The Cisco MDS switches support many different ways you can connect them with both fibre channel and ethernet. Some modules do not support all of the features, but they are available in the architecture. For example the MDS 9216i and … Continue reading

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FICON only supported in specific versions of SAN-OS / NX-OS

Here is something you may not know, I know I was not aware. FICON is only supported in specific versions of SAN-OS / NX-OS. So you may see all kinds of strange behavior, as I have been seeing and reported … Continue reading

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Tips and Pitfalls: SAN Extension Tuner

Common Commands show san-ext-tuner interface gx/y nport pwwn pwwn vsan vsan counters Example: MDS1(config)# san-ext-tuner enable MDS1(config)# iscsi enable MDS1(config)# iscsi enable module 2 MDS1(config)# zone default-zone permit vsan 503 MDS1(config)# int iscsi 2/2 MDS1(config-if)# no shut MDS1# san-ext-tuner MDS1(san-ext)# … Continue reading

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Tips and Pitfalls: IPS Network Simulator

Common Commands show ips stats netsim ingress gx/y Example: MDS1(config)# san-ext-tuner enable MDS1# ips netsim enable interface g2/3 g2/4 MDS1# ips netsim delay-ms 100 ingress g2/3 MDS1# ips netsim delay-ms 100 ingress g2/4 MDS1# ips netsim max-bandwidth-mbps 10 ingress g2/3 … Continue reading

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