Cisco MDS 9000 Series Troubleshooting Manual page 140

Fine Tuning/Troubleshooting IPS iSCSI TCP Performance
S e n d c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
no shutdown
vrrp 1
priority 110
address 10.48.69.250
(This is the iSCSI target IP address for the Windows iSCSI client.)
no shutdown
interface iscsi2/1
tcp pmtu-enable
tcp window-size 1024 tcp window-size 1024 tcp window-size 1024 tcp window-size 1024
(To increase the receive window size of the IPS module (in kilobytes).)
tcp sack-enable
no shutdown
To verify the connectivity between your client and the IPS iSCSI service:
MDS_BOTTOM# show ips stats tcp interface gig 2/1
TCP Statistics for port GigabitEthernet2/1
Connection Stats
Segment stats
TCP Active Connections
MDS_BOTTOM# show flogi database vsan 777
---------------------------------------------------------------------------
INTERFACE
---------------------------------------------------------------------------
fc1/3
iscsi2/1
Total number of flogi = 2.
MDS_BOTTOM# show fcns dabase vsan 777
VSAN 777:
--------------------------------------------------------------------------
FCID
--------------------------------------------------------------------------
0x610000
0x610001
Total number of entries = 2
MDS_BOTTOM#
MDS_BOTTOM# show module
Mod Ports
--- -----
1 16
2 8
Mod Sw
--- -----------
Cisco MDS 9000 Family Troubleshooting Guide
5-46
10.48.69.250 10.48.69.250 10.48.69.250
0 active openings, 24 accepts
0 failed attempts, 0 reset received, 24 established
7047380 received, 56080130 sent, 0 retransmitted
0 bad segments received, 0 reset sent
Local Address Remote Address
10.48.69.250:3260 10.48.69.233:1026
10.48.69.250:3260 10.48.69.233:1057
0.0.0.0:3260 0.0.0.0:0
VSAN FCID
777 0x610000 50:05:07:63:00:c8:94:4c
777 0x610001 20:05:00:0c:30:6c:24:42
TYPE PWWN
N 50:05:07:63:00:c8:94:4c (IBM)
N 20:05:00:0c:30:6c:24:42
Module-Type
------------------------------- ------------------ ------------
1/2 Gbps FC/Supervisor
IP Storage Module
Hw World-Wide-Name(s) (WWN)
------ --------------------------------------------------
Chapter 5
State
ESTABLISH
ESTABLISH
LISTEN
PORT NAME
50:05:07:63:00:c0:94:4c
20:00:00:0c:30:57:5e:c2
(VENDOR)
Model
DS-X9216-K9-SUP
DS-X9308-SMIP
Troubleshooting IP Storage Issues
Send-Q Recv-Q
0 0
34560 0
0 0
NODE NAME
FC4-TYPE:FEATURE
scsi-fcp:target fc..
scsi-fcp:init isc..w
Status
active *
ok
OL-5183-02, Cisco MDS SAN-OS Release 1.3