Options For Enhancing Tape Write I/O Performance - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

where type is the policy type and number is the number assigned.
For example, to delete the IPSec policy number 10:
switch:admin06> policy --delete ipsec 10
The policy has been successfully deleted.
To view IPSec information for an FCIP tunnel:
1. Log in to the switch as admin.
2. Issue the portShow fcipTunnel command:
switch:admin06> portshow fciptunnel 8/ge0 3 -ipsec
Port: ge0
-------------------------------------------
Tunnel ID 3
Remote IP Addr 192.175.5.200
Local IP Addr 192.175.5.100
Remote WWN Not Configured
Local WWN 10:00:00:05:1e:37:00:20
Compression off
Fastwrite on
Tape Pipelining on
Uncommitted bandwidth, minimum of 1000 Kbps (0.001000 Gbps)
SACK on
Min Retransmit Time 100
Keepalive Timeout 80
Max Retransmissions 9
Status : Active
Uptime 1 day, 23 hours, 24 minutes, 46 seconds
IKE Policy 7
-----------------------------------------
Authentication Algorithm: MD5
Encryption: 3DES
Perfect Forward Secrecy: off
Diffie-Hellman Group: 1
SA Life (seconds): 200000
IPSec Policy 7
-----------------------------------------
Authentication Algorithm: AES-XCBC
Encryption: 3DES
SA Life (seconds): 1500000
Pre-Shared Key 1234567890123456

Options for enhancing tape write I/O performance

There are two options available for enhancing open systems SCSI tape write I/O performance.
• FCIP fastwrite and tape pipelining.
• FC fastwrite.
FCIP fastwrite and tape pipelining are implemented together. FC fastwrite is an FC-FC routing alternative
that disables the local Ethernet ports (ge0 and ge1), making it impossible to configure FCIP fastwrite and
tape pipelining and FC fastwrite on the same 400 Multi-protocol Router or FR4- 1 8i blade. See
Fastwrite concepts" on page 396 for information about FC fastwrite.
FC fastwrite flows may be routed to another 400 Multi-protocol Router or FR4- 1 8i blade on the FC network.
This 400 Multi-protocol Router or FR4- 1 8i blade may have active FCIP tunnels over an IP network. FC
Fabric OS 6.1.x administrator guide 393
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