In order to transfer the configuration of the failed switch to the new switch, the new VDX must use the same Rbridge ID as the failed device for the switch.
The faulty node should be learned by using the show vcs command in the principle switch.
In the output below, the switch with the 20th Rbridge ID is faulty and needs to be replaced.
1) First of all, firmware updates of the new device should be done. Firmware must be the same as existing cluster nodes.
For firmware upgrade:
2) The new device is included in the logical chassis cluster using the Rbridge-ID owned by the faulty one. When this process occurs, the device will automatically reboot. We will use the following command.
Prior to NOS 6.x:
new-device# vcs vcsid 10 rbridge-id 20 logical-chassis enable
After NOS 7.x:
new-device# vcs vcsid 10 set-rbridge-id 20
3) After reboot the device is turned on, “show vcs” command is entered from the console. The WWN ID information of the new device is noted down, we will use this information later.
sw0# sh vcs
Config Mode : Distributed
VCS Mode : Logical Chassis
VCS ID : 10
VCS GUID : 00000000000000000000000000000000
Total Number of Nodes : 1
Rbridge-Id WWN Management IP VCS Status Fabric Status HostName
——————————————————————-
20 >10:00:50:EB:1A:AD:BB:AA* 0.0.0.0 Online Online sw0
4) It should be determined from which interface the devices are connected. The same cables and ports will be used when the process is finished.
sw0# sh fabric isl
Rbridge-id: 20 #ISLs: 1
Src Src Nbr Nbr
Index Interface Index Interface Nbr-WWN BW Trunk Nbr-Name
——————————————————————–
110 Te 20/0/47 110 Te 10/0/47 10:00:C4:F5:7C:CC:BB:AA 20G Yes “VDX-10”
5) All cables of the faulty device are disconnected. On the “show vcs” output on the principle switch, the defective device should appear “Offline”.
spine-vdx1# sh vcs
Config Mode : Distributed
VCS Mode : Logical Chassis
VCS ID : 10
VCS GUID : 8d71d67b-58b6-481f-b271-aabbccddeeff
Total Number of Nodes : 5
Rbridge-Id WWN Management IP VCS Status Fabric Status HostName
——————————————————————-
1 >10:00:50:EB:1A:51:0E:00* 10.XX.YY.100 Online Online spine-vdx1
2 10:00:50:EB:1A:C2:BB.AA 10.XX..YY.200 Online Online spine-vdx2
19 10:00:50:EB:1A:C9:BB:AA 10.XX.YY.19 Online Online leaf-vdx19
20 10:00:50:EB:1A:C0:BB:AA 10.XX.YY.20 Offline Unknown leaf-vdx20
21 10:00:50:EB:1A:D1:BB:AA 10.XX.YY.21 Online Online leaf-vdx21
6) Using the vcs replace rbridge-id command on the principle switch, the new device will replace the old one. After the command output, the WWN-ID will be asked, the WWN address of the new switch must be entered.
principle-device# vcs replace rbridge-id 20
Enter the WWN of the new replacement switch:10:00:50:EB:1A:AD:BB:AA
This operation will remove and replace the switch from the fabric. Do you want to continue? [Y/N] y
8) In the principle key, Replacing should appear in the “show vcs” output.
principle-device# show vcs
Config Mode : Distributed
VCS Mode : Logical Chassis
VCS ID : 10
VCS GUID : 8d71d67b-58b6-481f-b271-aabbccddeeff
Total Number of Nodes : 42
Rbridge-Id WWN Management IP VCS Status Fabric Status HostName
———————————————————————
1 >10:00:50:EB:1A:51:BB.AA* 10.XX.YY.100 Online Online spine-vdx1
2 10:00:50:EB:1A:C2:BB.AA 10.XX..YY.200 Online Online spine-vdx2
19 10:00:50:EB:1A:C9:BB:AA 10.XX.YY.19 Online Online leaf-vdx19
20 10:00:50:EB:1A:C0:BB:AA 10.XX.YY.20 Replacing Online leaf-vdx20
21 10:00:50:EB:1A:D1:BB:AA 10.XX.YY.21 Online Online leaf-vdx21
9) Network connections of the new switch are made.
10) With ISL interfaces, the switch will be included in the Cluster. VCS Status Rejoining will then return to Online.
principle-device# show vcs
Config Mode : Distributed
VCS Mode : Logical Chassis
VCS ID : 10
VCS GUID : 8d71d67b-58b6-481f-b271-aabbccddeeff
Total Number of Nodes : 5
Rbridge-Id WWN Management IP VCS Status Fabric Status HostName
——————————————————————
1 >10:00:50:EB:1A:51:BB:AA* 10.XX.YY.100 Online Online spine-vdx1
2 10:00:50:EB:1A:C2:BB.AA 10.XX..YY.200 Online Online spine-vdx2
19 10:00:50:EB:1A:C9:BB:AA 10.XX.YY.19 Online Online leaf-vdx19
20 10:00:50:EB:1A:C0:BB:AA 10.XX.YY.20 Rejoining Online leaf-vdx20
21 10:00:50:EB:1A:D1:BB:AA 10.XX.YY.21 Online Online leaf-vdx21
11) The missing licenses of VDX should be entered as follows.
new-device# license add FTP-URL ftp://username:password@10.XX.YY.20/license.xml rbridge-id 20
or
new-device# license add SCP-URL scp://username:password@10.XX.YY.20/license.xml rbridge-id 20
or
The device with 10.XX.YY.20 ip address is connected and the license is added to the local switch.
new-device# license add licstr
“*B
5Qsdfsdfmwrewrewr0dsfsq4dqhdf80r,ftmOt93rqY,B3sfsdfsdfi6mcv9x7Z:HCI0SJFNtKsadsadsadED0BRZQzJJV6wrCGDgtb5b7jAG4T3VL”
12) After going online and entering the licenses, all interfaces should be connected.
Notes to Myself 