Dell VA-40FC Service Manual download pdf (Page 23)

Fabric OS v6.4.1 Release Notes v1.0 Page 23 of 62

circuits created using IPIFs on the same 10 GbE port (and no more than 1G per circuit).As

a recommended best practice, the VE tunnel shouldn’t be over-subscribed (e.g. 8G FC

traffic over 500Mbps tunnel). General guidelines are 2:1 subscription without

compression and 4:1 with compression.

• Non-disruptive firmware activation will disrupt I/O traffic on FCIP links.

• Differences between the Brocade 7800/FX8-24 platforms and previous generation

7500/FR4-18i platforms include:

o On the 7800, the GbE port does not directly correlate to a VE port

o On the FX8-24, GbE ports 0-9 or 10GbE port 1 (xge1) correspond to VE ports 12-

21, and 10 GbE port 0 (xge0) corresponds to VE ports 22-31

o The CLI syntax for the 7800/FX8-24 varies from the 7500/FR4-18i. Please refer

to the Brocade Fabric OS Command Reference document for FOS v6.4 for

details

• Under Traffic Isolation Zone, configurations with fail over enabled, Non-TI zone traffic will use the

dedicated path if no other E or VE paths through the fabric exist, or if the non-dedicated paths are

not the shortest paths. (A higher bandwidth tunnel with multiple circuits will become shortest

path compared to a single tunnel).

• A VE/VEX Tunnel and E/EX FC port cannot connect to the same domain at the same time.

• The recommended Keep Alive Timeout must be the same on tunnel/circuits on the switches on

both sides of a link.

• Latency measurements supported on FCIP Tunnels:

o 1GbE - 200ms round trip time and 1% Loss

10GbE – 100ms round trip and 0.1% Loss

• Brocade 7800 supports Optical and Copper Media types on GE0 and GE1 interfaces. Copper

Media type is default on GE0/GE1 ports and does not support auto-sense functions.

• After inserting a 4G SFP in GE ports of an FX8-24 blade or 7800 switch, sometimes “sfpshow”

output might display “Can not read serial data!” . Removing and re-inserting the SFP should

resolve this issue. It is recommended that users perform sfpshow immediately after inserting the

SFP and ensure SFP is seated properly before connecting the cables.

• When running FOS v6.4.0 or later, if any of the following features are enabled in the FCIP

configuration, a downgrade operation below FOS v6.4.0 will be blocked until the features are

removed from the FCIP config:

o IPv6

o IPSec on the FX8-24

o DSCP Markings

o Advanced Compression options 2 and 3 on the FX8-24

o VEX ports on the FX8-24

FCIP (Brocade 7500 and FR4-18i)

• When configuring an FCIP Tunnel to use VLAN tagging on a 7500 or FR4-18i, a static ARP entry

must be configured on the 7500/FR4-18i GE interface for the local gateway. Also a static ARP

entry must be added in the local gateway for the 7500/FR4-18i GE port.

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Dell VA-40FC Service Manual Page 23