Hello,
I have a strange problem with a SG300-10 (our first SG300) working as a desktop switch.
When a PC that is connected to the switch is powered off and is later (a few minutes or next day) switched on, the PC has a ethernet-connection to the switch, but no IP-connectivity.
The PC-statistics shows that ethernet is connected and it sends packets, but the PC does not receive any packets.
At the same time the SG300 statistics for the port says, that the ethernet is connected (same paramaters as the PC) an that the switch is sending IP-packets (broadcast and unicast) to the port, but does not receive any packets. The switch shows follwing entries in the ram log for the port:
| 09:11:35 | Warning | %STP-W-PORTSTATUS: gi3: STP status Forwarding, aggregated (1) |
| 09:11:31 | Informational | %LINK-I-Up: gi3, aggregated (1) |
| 09:11:28 | Warning | %LINK-W-Down: gi3 |
| 09:11:24 | Warning | %STP-W-PORTSTATUS: gi3: STP status Forwarding |
| 09:11:19 | Informational | %LINK-I-Up: gi3 |
With the older firmware 1.2.9.44 the IP-connectivity worked after waiting 5-10 minutes.
With the new firmware 1.3.0.59 I can wait even 15 minutes, there is no change and nothing happens.
But when I change some "unimportant" parameters of the port (i.e. change port speed from autonegation to fixed 1000M, or vice versa) and then save the running configuration to the startup-config, around 5-10 Seconds after the configuration is saved, the port gets full IP connectivity and after that works fine (until the PC is switched OFF and ON the next time).
This is a very strange behaviour. As "PC" I have tested this with HP-workstations, Lenovo Thinkpad and a MAC Mini. The switch "reacts" to all the same.
Following I have attached the config of the switch.
It would be very appreciated if someone could give me some hints on how to solve or debug this issue further.
Thanks very much
Andreas
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config-file-header
sw3
v1.3.0.59 / R750_NIK_1_3_647_260
CLI v1.0
set system mode switch
file SSD indicator plaintext
@
no cdp log mismatch native
no cdp log mismatch voip
no cdp appliance-tlv enable
port jumbo-frame
vlan database
vlan 2,4-5,10
exit
voice vlan state disabled
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 short-reach
no bonjour enable
hostname sw3
line console
no autobaud
exit
line console
speed 19200
exit
logging buffered debugging
no passwords complexity enable
username cisco password encrypted xxxxxxxxxxxx 7 privilege 15
ip ssh server
snmp-server server
clock timezone " " 1
clock summer-time web recurring eu
clock source sntp
sntp unicast client enable
sntp unicast client poll
sntp server 192.168.112.7
ip domain name abc.de
ip name-server 192.168.112.7
!
interface vlan 1
no ip address dhcp
!
interface vlan 2
name 2
!
interface vlan 4
name 4
!
interface vlan 5
name 5
ip address 192.168.112.15 255.255.255.0
ipv6 address 2001:abc:100b:25::15/64
!
interface vlan 10
name 10
!
interface gigabitethernet1
switchport mode access
switchport access vlan 5
!
interface gigabitethernet2
switchport mode access
switchport access vlan 5
!
interface gigabitethernet3
switchport mode access
switchport access vlan 5
!
interface gigabitethernet4
switchport mode access
switchport access vlan 5
!
interface gigabitethernet5
switchport mode access
switchport access vlan 5
!
interface gigabitethernet6
switchport mode access
switchport access vlan 5
!
interface gigabitethernet7
no eee enable
negotiation 1000f
switchport mode access
switchport access vlan 5
no eee lldp enable
no green-ethernet energy-detect
!
interface gigabitethernet8
no mdix
switchport mode access
switchport access vlan 5
!
interface gigabitethernet9
no eee enable
negotiation 100h 100f 1000f
switchport mode access
switchport access vlan 5
no eee lldp enable
no green-ethernet energy-detect
!
interface gigabitethernet10
no eee enable
no mdix
switchport mode general
switchport general allowed vlan add 2,4-5,10 tagged
switchport general ingress-filtering disable
switchport general pvid 5
no eee lldp enable
no green-ethernet energy-detect
switchport default-vlan tagged
!
exit
macro auto disabled
ip route 0.0.0.0 /0 192.168.112.1 metric 1
