SG300 firmware 1.3.0.59 Bug

[vashkenazy]

Hi all, I'm having troubles with this firmware in a SG300-28 switch. Actually the DHCP server, a new feature in this firmware release, doesn't work correctly. DHCP static reservations are not working: CLient ID and MAC address are not recognized correctly, and the DHCP server assigns the first free IP in the pool, rather than the reserved one.

If Cisco engineers read this, plese correct the issue.

The issue is well documented in this thread, and it's present in series 500 too:

https://supportforums.cisco.com/message/3941468#3941468

Any help is appreciated.

Thanks, Andrea

[Tom Watts]

Hi Andrea, I've found the same behavior.

-Tom
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[Tom Watts]

Hi Andrea,

I have this working with this config. My computer in use is a Window Vista HP laptop.

ip dhcp pool host Test

address 192.168.2.15 255.255.255.0 client-identifier 01:00:23:8b:44:5a:ed

default-router 192.168.2.1

switchce82d3#show run

config-file-header

switchce82d3

v1.3.0.59 / R750_NIK_1_3_647_260

CLI v1.0

set system mode router

file SSD indicator encrypted

@

ssd-control-start

ssd config

ssd file passphrase control unrestricted

no ssd file integrity control

ssd-control-end cb0a3fdb1f3a1af4e4430033719968c0

!

vlan database

vlan 2

exit

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______________

ip dhcp server

ip dhcp pool host Test

address 192.168.2.15 255.255.255.0 client-identifier 01:00:23:8b:44:5a:ed

default-router 192.168.2.1

exit

bonjour interface range vlan 1

hostname switchce82d3

!

interface vlan 1

ip address 192.168.100.129 255.255.255.0

no ip address dhcp

!

interface vlan 2

ip address 192.168.2.1 255.255.255.0

!

interface fastethernet3

switchport mode access

switchport access vlan 2

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______________

ip dhcp server

ip dhcp pool host Test

address 192.168.2.15 255.255.255.0 client-identifier 01:00:23:8b:44:5a:ed

default-router 192.168.2.1

exit

bonjour interface range vlan 1

hostname switchce82d3

!

interface vlan 1

ip address 192.168.100.129 255.255.255.0

no ip address dhcp

!

interface vlan 2

ip address 192.168.2.1 255.255.255.0

!

interface fastethernet3

switchport mode access

switchport access vlan 2

-Tom
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[vashkenazy]

Hi Tom, actually I upgraded firmware to 1.3.0.62 (1.3.0.59 is no longer available), but I still have the same problem.

I tried to configure DHCP server as you suggested, but via CLI no "ip dhcp server" command is available. The only command available seems to be "ip dhcp snooping". So the only option is to manage DHCP server via web interface.

Any suggestion?

Thanks,

Andrea

[Tom Watts · Accepted solution]

Hi Andrea, the command is available on the global config

configure terminal

ip dhcp server

If the command is not available it is because you're not using at least 1.3.0.59. I am running 1.3.0.59 and 1.3.0.62 and both software images have the command available.

-Tom
Please mark answered for helpful posts

[vashkenazy]

Hi Tom, I managed to work DHCP configuration using your suggestions. Actually my problem was trying to reserve a static IP using a particular subnet mask: 255.255.254.0. That because this client should see, in my mind, both subnets allocated on the switch: 192.168.128.0 and 192.168.129.0.

But in this way the static assignment failed. Now, setting the 255.255.255.0 subnet to the host reservation works correctly, even if must use client-id (01+Mac). Using reservation via Mac address doesn't work.

BTW thank you a lot.

Andrea