WS-C6509-E Replace engine for help

[wangjf1]

Have a great day

I have a WS-C6509-E that uses two WS-SUP720-3B engines. The engine in module 5 failed. We planned to replace this engine, so we chose a time to replace it. After replacing the engine, we installed the new module 5 as the main engine and started it. All our original configurations were lost. What caused this? Is it because module 5, the main engine, synchronized the configuration of the backup engine module 6, and then deleted all the configurations? Is this mechanism a bit stupid? I want to know what is the reason for the configuration loss? Please see the specific model below.

core6509# show module
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
3 48 CEF720 48 port 1000mb SFP WS-X6748-SFP SAL1642QGS0
5 0 Unknown (Other) Unknown Unknown
6 2 Supervisor Engine 720 (Active) WS-SUP720-3B SAL1633KDRP
8 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX SAL1634L123

Mod MAC addresses Hw Fw Sw Status
--- ---------------------------------- ------ ------------ ------------ -------
3 30f7.0d8b.53e0 to 30f7.0d8b.540f 2.4 12.2(18r)S1 12.2(33)SXJ1 Ok
5 0000.0000.0000 to 0000.0000.0000 0.0 Unknown Unknown Unknown
6 ccef.4838.2cee to ccef.4838.2cf1 5.13 8.5(4) 12.2(33)SXJ1 Ok
8 442b.0352.eaac to 442b.0352.eadb 4.2 12.2(18r)S1 12.2(33)SXJ1 Ok

Mod Sub-Module Model Serial Hw Status
---- --------------------------- ------------------ ----------- ------- -------
3 Centralized Forwarding Card WS-F6700-CFC SAL1628GJBV 4.1 Ok
6 Policy Feature Card 3 WS-F6K-PFC3B SAL1632K6C3 2.6 Ok
6 MSFC3 Daughterboard WS-SUP720 SAL1633KFP4 5.1 Ok
8 Centralized Forwarding Card WS-F6700-CFC SAL1632JUNS 4.1 Ok

Mod Online Diag Status
---- -------------------
3 Pass
5 Not Applicable
6 Pass
8 Pass

NAME: "5", DESCR: "WS-SUP720-3B 2 ports Supervisor Engine 720 Rev. 5.13"
PID: WS-SUP720-3B , VID: V11, SN: SAL1633KDRP

NAME: "6", DESCR: "WS-SUP720-3B 2 ports Supervisor Engine 720 Rev. 5.13"
PID: WS-SUP720-3B , VID: V11, SN: SAL1633KDRP

[Leo Laohoo]

The logs would possibly say that the Supervisor Engine in slot 5 is running a different IOS version to the current active one so the system has refuses to let that line card boot.  The replacement Supervisor Card in slot 5 is probably in ROMMON.

[wangjf1]

Hi  Leo Laohoo

However, this is not the case. After the device was shut down and replaced, it was started up. It synchronized the engine version of module 6 to the same as module 5. The newly replaced module 5 became the main engine, and all the configurations on module 6 were lost. I think this mechanism is not normal. Why choose module 5 with empty configuration as the main engine and delete the configuration of module 6 synchronously? In addition to this, I have no other ideas about the disappearance of this configuration.

[Leo Laohoo]

Post the logs.

[pieterh]

I agree with @Leo Laohoo that module5 has not yet fully booted and synced with the other module
or you did not complete the replacement procedure

in this process you must understand the difference between active/standby and master/slave
if your out of luck you may have encountered a dual-active configuration, where both sups think the are the active sup and no configuration is replicated

in your output module 6 is reported as the active sup, not the module in slot-5
5 0 Unknown (Other) Unknown Unknown
6 2 Supervisor Engine 720 (Active) WS-SUP720-3B SAL1633KDRP

[Paul Chapman]

Hi -

Did you hot swap the supervisor in slot 5, or did you shut down the whole switch to perform the change?

PSC