Cisco DS-C9124-K9 Troubleshooting Guide - Page 436

iSLB Issues Chapter 20 Troubleshooting IP Storage Services Send documentation comments to [email protected] Session Down-"pWWN in Use At Remote Switch" Symptom Session down with error pWWN in use at remote switch. Table 20-10 Session Down-"pWWN in Use At Remote Switch" Symptom Possible Cause Session down with An initiator pWWN can be used only error pWWN in use at once in the fabric. remote switch. Solution If the same initiator tries to log in to two iSCSI ports at the same time, both ports will initially allow the sessions to come up and then try to reserve the pWWN in the fabric. If it is detected that this pWWN is already in use, the session will be destroyed. To fix the problem, use another WWN or allow the system to assign one for the initiator using the static [nWWN | pWWN] system-assign CLI command. Redirected Session Does Not Come Up Symptom Redirected session does not come up. Table 20-11 Redirected Session Does Not Come Up Symptom Redirected session does not come up. Possible Cause Solution Connection may be down, or initiator to Use the ping CLI command to verify that the connection interface mapping may be missing. between the redirected port and initiator is up. Use the show logging logfile CLI command to check the system messages to determine what the session creation failure reason is if any. Use the show interface brief CLI command to verify that iSCSI and Gigabit Ethernet interfaces are up. Bring down and then bring up the initiator and try again to see if the error is persistent. There are times initiators do not attempt to make connections to the redirected interface. Use the debug ips islb vrrp flow CLI command to check if the redirection is performing correctly. Use the show islb vrrp summary CLI command to see if the initiator to the interface mapping is set up. 20-62 Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x OL-9285-05