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SF300-24P looses default-gateway when vlan ip configuration is changed

Hello,

SF300-24P is losing the default-gateway config when I change the ip address of the management vlan. It happens for address or mask changes, no matter if the default-gateway is still reachable.

 

switch08p#ping 10.9.1.1
Pinging 10.9.1.1 with 18 bytes of data:

18 bytes from 10.9.1.1: icmp_seq=1. time=0 ms
18 bytes from 10.9.1.1: icmp_seq=2. time=0 ms
18 bytes from 10.9.1.1: icmp_seq=3. time=0 ms
18 bytes from 10.9.1.1: icmp_seq=4. time=0 ms

----10.9.1.1 PING Statistics----
4 packets transmitted, 4 packets received, 0% packet loss
round-trip (ms) min/avg/max = 0/0/0


switch08p#show ip rout
Maximum Parallel Paths: 1 (1 after reset)
IP Forwarding: disabled
Codes: > - best, C - connected, S - static


S   0.0.0.0/0 [1/1] via 10.9.12.1, 01:40:17,                               
C   10.9.12.0/23 is directly connected,                                    
C   127.0.0.0/8 is directly connected, SuperVlan_20000                     

switch08p#show running-config 

...

interface vlan 12
 name switches
 ip address 10.9.13.8 255.255.254.0
 ipv6 address autoconfig

...

ip default-gateway 10.9.12.1

switch08p(config)#int vlan 12
switch08p(config-if)#ip address 10.9.13.88 255.255.254.0
Please ensure that the port through which the device is managed has the proper
settings and is a member of the new management interface.
Would you like to apply this new configuration? (Y/N)[N] Y
switch08p(config-if)#ip address 10.9.13.8 255.255.254.0
Please ensure that the port through which the device is managed has the proper
settings and is a member of the new management interface.
Would you like to apply this new configuration? (Y/N)[N] Y
switch08p(config-if)#end
switch08p#ping 10.9.1.1
Pinging 10.9.1.1 with 18 bytes of data:

PING: net-unreachable
PING: net-unreachable
PING: net-unreachable
PING: net-unreachable

----10.9.1.1 PING Statistics----
4 packets transmitted, 0 packets received, 100% packet loss

switch08p#show ip rou         
Maximum Parallel Paths: 1 (1 after reset)
IP Forwarding: disabled
Codes: > - best, C - connected, S - static


C   10.9.12.0/23 is directly connected,                                    
C   127.0.0.0/8 is directly connected, SuperVlan_20000     

I have to reapply the "ip default-gateway 10.9.12.1" in order to get network back. This makes a simply ip address change quite difficult for a remote switch.

I used ipv6 connection as a workarround but I think this is not a completely final solution.

 

 

Is this a bug, known issue or simply a limitation?

 

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