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SG350-28P frequent crashes after LAG creation on SFP ports

Arturo Bianchi
Level 1
Level 1

Hi,

after adding two copper cables in the SFP ports and a LAG on the 2 ports of the switch, it started crashing every few minutes. The instability occurred even with only one cable and I found that it does not occur in these two cases:

  • I remove both cables (and join the switches through any copper port)
  • I disable the PnP service on this switch

the LAG in question is used to join 2 switches, an old SG300 and this one, the other switch has no problems.

 

2147483421		Emergency	%SYSLOG-F-OSFATAL: caught segmentation fault exception at address (nil) signal-num = 11 (SIGSEGV) signal-code = 1 (SEGV_MAPERR) reg[00] = 0xfffffff8 reg [01] = 0x0 reg[02] = 0x27 reg[03] = 0x5 reg[04] = 0x0 reg[05] = 0x0 reg[06] = 0x27 reg[07] = 0xa865dc44 reg[08] = 0x10 reg[09] = 0xa865dc44 reg[10] = 0 xb697d38c FP = 0x726fd918 IP = 0xffffffff SP = 0x726fa948 LR = 0xb53aefdc PC = 0xb4510ee4 CPSR = 0x60010030 Fault Address = 0x0 Trap no = 0xe Err Code = 0x15 Old Mask = 0x0 ***** FATAL ERROR *****  Reporting Task: PNPA. Software Version: 2.5.0.83 (date Jun 18 2019 time 16:44:23) base_address=0xb470e000 
2147483422		Emergency	%SYSLOG-F-OSFATAL: caught segmentation fault exception at address (nil) signal-num = 11 (SIGSEGV) signal-code = 1 (SEGV_MAPERR) reg[00] = 0xfffffff8 reg [01] = 0x0 reg[02] = 0x27 reg[03] = 0x5 reg[04] = 0x0 reg[05] = 0x0 reg[06] = 0x27 reg[07] = 0xa865dc44 reg[08] = 0x10 reg[09] = 0xa865dc44 reg[10] = 0 xb690e38c FP = 0x726fd918 IP = 0xffffffff SP = 0x726fa948 LR = 0xb533ffdc PC = 0xb44a1ee4 CPSR = 0x60010030 Fault Address = 0x0 Trap no = 0xe Err Code = 0x15 Old Mask = 0x0 ***** FATAL ERROR *****  Reporting Task: PNPA. Software Version: 2.5.0.83 (date Jun 18 2019 time 16:44:23) base_address=0xb469f000 
2147483423		Emergency	%SYSLOG-F-OSFATAL: caught segmentation fault exception at address (nil) signal-num = 11 (SIGSEGV) signal-code = 1 (SEGV_MAPERR) reg[00] = 0xfffffff8 reg [01] = 0x0 reg[02] = 0x27 reg[03] = 0x5 reg[04] = 0x0 reg[05] = 0x0 reg[06] = 0x27 reg[07] = 0xa865dc44 reg[08] = 0x10 reg[09] = 0xa865dc44 reg[10] = 0 xb698c38c FP = 0x726fd918 IP = 0xffffffff SP = 0x726fa948 LR = 0xb53bdfdc PC = 0xb451fee4 CPSR = 0x60010030 Fault Address = 0x0 Trap no = 0xe Err Code = 0x15 Old Mask = 0x0 ***** FATAL ERROR *****  Reporting Task: PNPA. Software Version: 2.5.0.83 (date Jun 18 2019 time 16:44:23) base_address=0xb471d000 

I upgraded to version 2.5.5.47 but the problem kept showing up; now I'm checking if the trivial deactivation of PnP is enough to no longer have problems ... 

 

 

Any advice or idea about it?

 

Thanks,
Arturo.

 

Here is the configuration, without special settings:

 

------------------ show running-config ------------------
config-file-header
switch6641e9
v2.5.5.47 / RTESLA2.5.5_930_364_286
CLI v1.0
file SSD indicator encrypted
@
ssd-control-start
ssd config
ssd file passphrase control unrestricted
no ssd file integrity control
ssd-control-end cb0a3fdb1f3a1af4e4430033719968c0
!
!
unit-type-control-start
unit-type unit 1 network gi uplink none
unit-type-control-end
!
voice vlan oui-table add 0001e3 Siemens_AG_phone________
voice vlan oui-table add 00036b Cisco_phone_____________
voice vlan oui-table add 00096e Avaya___________________
voice vlan oui-table add 000fe2 H3C_Aolynk______________
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone___________
voice vlan oui-table add 00e075 Polycom/Veritel_phone___
voice vlan oui-table add 00e0bb 3Com_phone______________
green-ethernet energy-detect
green-ethernet short-reach
ip dhcp relay address 192.168.1.1
bonjour interface range vlan 1
hostname switch6641e9
line console
exec-timeout 30
exit
line ssh
exec-timeout 30
exit
line telnet
exec-timeout 30
exit
username xxxxx password encrypted xxxxxxx privilege 15
ip http timeout-policy 1800
clock timezone CET +1
clock summer-time web recurring eu
sntp server ip.pool.ntp.org
clock dhcp timezone
no pnp enable
!
interface GigabitEthernet2
 spanning-tree link-type point-to-point
 switchport mode trunk
 macro description switch
 !next command is internal.
 macro auto smartport dynamic_type switch
!
interface GigabitEthernet25
 ip dhcp snooping trust
 spanning-tree link-type point-to-point
 switchport mode trunk
 macro description switch
 !next command is internal.
 macro auto smartport dynamic_type switch
!
interface GigabitEthernet26
 ip dhcp snooping trust
!
interface GigabitEthernet27
 ip dhcp snooping trust
 spanning-tree link-type point-to-point
 channel-group 2 mode auto
 switchport mode trunk
 macro description switch
 !next command is internal.
 macro auto smartport dynamic_type switch
!
interface GigabitEthernet28
 ip dhcp snooping trust
 channel-group 2 mode auto
 switchport mode trunk
!
interface Port-Channel2
 flowcontrol auto
 description Siwtch
 ip dhcp snooping trust
 spanning-tree link-type point-to-point
 switchport mode trunk
 macro description switch
 !next command is internal.
 macro auto smartport dynamic_type switch
!
exit

 

Log crash:

00--2000 00:00:00 :%SYSLOG-F-OSFATAL: caught segmentation fault exception at address (nil)

signal-num = 11 (SIGSEGV)
signal-code = 1 (SEGV_MAPERR)

reg[00]	= 0xfffffff8
reg[01]	= 0x0
reg[02]	= 0x27
reg[03]	= 0x5
reg[04]	= 0x0
reg[05]	= 0x0
reg[06]	= 0x27
reg[07]	= 0xa99d069c
reg[08]	= 0x10
reg[09]	= 0xa99d069c
reg[10]	= 0xb69bc6e8
FP	= 0x716fd918
IP	= 0xffffffff
SP	= 0x716fa948
LR	= 0xb53e9554
PC	= 0xb4540ee4
CPSR	= 0x60010030
Fault Address	= 0x0
Trap no	= 0xe
Err Code	= 0x15
Old Mask	= 0x0

***** FATAL ERROR ***** 
Reporting Task: PNPA.
Software Version: 2.5.5.47 (date May  6 2020 time 17:25:42)
base_address=0xb473e000 
00--2000 00:00:00 :%SYSLOG-F-OSFATAL: caught segmentation fault exception at address (nil)

signal-num = 11 (SIGSEGV)
signal-code = 1 (SEGV_MAPERR)

reg[00]	= 0xfffffff8
reg[01]	= 0x0
reg[02]	= 0x27
reg[03]	= 0x5
reg[04]	= 0x0
reg[05]	= 0x0
reg[06]	= 0x27
reg[07]	= 0xa9ad069c
reg[08]	= 0x10
reg[09]	= 0xa9ad069c
reg[10]	= 0xb68f66e8
FP	= 0x716fd918
IP	= 0xffffffff
SP	= 0x716fa948
LR	= 0xb5323554
PC	= 0xb447aee4
CPSR	= 0x60010030
Fault Address	= 0x0
Trap no	= 0xe
Err Code	= 0x15
Old Mask	= 0x0
1 Reply 1

marce1000
VIP
VIP

 

 - Since you tried latest firmware   , guess you need to report this to Cisco :

            https://www.cisco.com/c/en/us/support/web/tsd-cisco-small-business-support-center-contacts.html

 M.



-- ' 'Good body every evening' ' this sentence was once spotted on a logo at the entrance of a Weight Watchers Club !
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