Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 619
Information Monitored in iSCSI Traffic Flows
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Information Monitored in iSCSI Traffic Flows iSCSI optimization examines the following data in packets and uses the data to track the session and create the classifier entries that enable QoS treatment. • Initiator's IP Address • Target's IP Address • ISID (Initiator defined session identifier) • Initiator's IQN (iSCSI qualified name) • Target's IQN • Initiator's TCP Port • Target's TCP Port • Connection ID • Aging • Up Time If no iSCSI traffic is detected for a session during a user-configurable aging period, the session data is cleared. If more than 256 simultaneous sessions are logged continuously, the following message displays indicating the queue rate limit has been reached: %Z9500LC48:1 %ACL_AGENT-3-ISCSI_OPT_MAX_SESS_LIMIT_REACHED: Monitored iSCSI sessionsreached maximum limit NOTE: If you are using EqualLogic or Compellent storage arrays, more than 256 simultaneous iSCSI sessions are possible. However, iSCSI session monitoring is not capable of monitoring more than 256 simultaneous iSCSI sessions. If this number is exceeded, sessions are not detected by the switch; but it does not affect forwarding. Dell Networking recommends that you disable iSCSI session monitoring for EqualLogic and Compellent storage arrays or for installations with more than 256 simultaneous iSCSI sessions. Only sessions the switch observes are learned; sessions flowing through an adjacent switch are not learned. Session monitoring learns sessions that actually flow through the switch, it does not learn all sessions in the entire topology. After a switch is reloaded, any information exchanged during the initial handshake is not available. If the switch picks up the communication after reloading, it would detect a session was in progress but could not obtain complete information for it. Any incomplete information of this type would not be available in the show commands. iSCSI Optimization 619
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1,197
-
1,198
-
1,199
-
1,200
-
1,201
-
1,202
-
1,203
-
1,204
-
1,205
-
1,206
-
1,207
-
1,208
-
1,209
-
1,210
-
1,211
-
1,212
-
1,213
-
1,214
-
1,215
-
1,216
-
1,217
-
1,218
-
1,219
-
1,220
-
1,221
-
1,222
-
1,223
-
1,224
-
1,225
-
1,226
-
1,227
-
1,228
-
1,229
-
1,230
-
1,231
-
1,232
-
1,233
-
1,234
-
1,235
-
1,236
-
1,237
-
1,238
-
1,239
-
1,240
-
1,241
-
1,242
-
1,243
-
1,244
-
1,245
-
1,246
-
1,247
-
1,248
-
1,249
-
1,250
-
1,251