Physical link between VDX switches show as “Up/Up” but the link does not become an ISL link. SupportSave indicates “Too many interrupts” in the Internal raslog as below:
2017/04/20-16:37:11:379641, [CBR2-5665], 271060/0, SW/0 | Active, ERROR, VDX6940-36Q, CHIP0: Too many interrupts (501) happened.
The Global error cause is (0x40 0x0), Global normal cause is (0x0 0x0)., OID:0x43008080,
cbr2_intr.c, line: 1048, comp:insmod, ltime:2017/04/20-16:37:11:379438
Note: As this is an internal RASLOG it will not appear on the console, use ‘errdumpall’, a root level command, to examine the RASLOG.