cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
3365
Views
0
Helpful
22
Replies

DHCP server does not assign IP addresses SG500 firmware 1.3.5

andbor600
Level 1
Level 1

good day collegues

has any of you come across the following issue:

my switch (after upgrading to the newest firmware 1.3.5) does not assign IP addresses to some of the hosts.

after a couple of hours I managed (do not even how) to force my switch to assign IP addresses only to some of the hosts.

still some of them cannot get the IP address and remain with "funny" IP address like i.e. 169.254.100.100

additional info

1. if I boot my switch with the previous version of firmware (1.3.0.6) everything is OK. all my hosts get correct IP addresess

2. the hosts which do not get IP address were perviously entered in stat host table - now removed, ARP cleared, etc, everything many many times rebooted.

I ran out of ideas, could you pleae give me some hints ?

the config below:

config-file-header
SG500
v1.3.5.58 / R750_NIK_1_35_647_358
CLI v1.0
set system mode router queues-mode 4

file SSD indicator encrypted
@
ssd-control-start
ssd config
ssd file passphrase control unrestricted
no ssd file integrity control
ssd-control-end zzz
!
no spanning-tree
vlan database
vlan 11,13-14
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______________
no ip dhcp snooping verify
ip dhcp snooping information option allowed-untrusted
ip dhcp snooping vlan 11
ip dhcp snooping vlan 13
ip dhcp snooping vlan 14
ip arp inspection logging interval infinite
green-ethernet energy-detect
no eee enable
arp timeout 1
ip dhcp server
ip dhcp pool host q409
address 10.10.11.2 255.255.255.0 client-identifier 01:00:08:9b:ac:8f:92
default-router 10.10.11.254
dns-server 10.10.10.1
exit
ip dhcp pool host PCH-100
address 10.10.11.10 255.255.255.0 client-identifier 01:00:06:dc:41:ef:ef
default-router 10.10.11.254
dns-server 10.10.10.1
exit
ip dhcp pool host q209
address 10.10.13.3 255.255.255.0 client-identifier 01:00:08:9b:ac:72:ba
client-name q209
default-router 10.10.13.254
dns-server 8.8.8.8
exit
exit
ip dhcp pool network HOME
address low 10.10.11.1 high 10.10.11.254 255.255.255.0
lease infinite
default-router 10.10.11.254
dns-server 10.10.10.1
exit
ip dhcp pool network GUESTS
address low 10.10.14.1 high 10.10.14.254 255.255.255.0
lease infinite
netbios-node-type b-node
default-router 10.10.14.254
dns-server 10.10.10.1 62.233.233.233
exit
ip dhcp relay address 10.10.10.1
ip dhcp relay address 10.10.11.254
ip dhcp relay address 10.10.13.254
ip dhcp relay address 10.10.14.254
no boot host auto-config
no qos
qos advanced-mode trust dscp
qos wrr-queue wrtd
exit
hostname SG500
line telnet
exec-timeout 0
exit
logging buffered debugging
no logging file
aaa authentication login Telnet local
aaa authentication enable Telnet enable
aaa authentication dot1x default none
line telnet
login authentication Telnet
enable authentication Telnet
password 999 encrypted
exit
no passwords complexity enable
passwords aging 0
username 999 password encrypted 999 privilege 15
ip http timeout-policy 0 http-only
clock timezone " " 1
clock summer-time web recurring eu
clock source sntp
clock source browser
sntp unicast client enable
clock dhcp timezone
ip domain name 999
ip name-server  10.10.10.1 62.233.233.233 8.8.8.8
ip host 999 10.10.13.3
ip telnet server
no service mirror-configuration
no security-suite deny syn-fin
security-suite syn protection mode disabled
!
interface vlan 1
ip address 10.10.10.254 255.255.255.0
no ip address dhcp
!
interface vlan 11
name HOME
ip address 10.10.11.254 255.255.255.0
ip dhcp relay enable
!
interface vlan 13
name DMZ
ip address 10.10.13.254 255.255.255.0
ip dhcp relay enable
!
interface vlan 14
name GUESTS
ip address 10.10.14.254 255.255.255.0
ip dhcp relay enable
!
interface gigabitethernet1/10
description "(99) QNAP 409"
switchport trunk native vlan 11
!
exit
macro auto disabled
macro auto processing type host enabled
macro auto processing type ip_phone disabled
macro auto processing type ip_phone_desktop disabled
macro auto processing type router enabled
mac address-table aging-time 10
ip default-gateway 10.10.10.1
snmp-server set  999 permit

22 Replies 22

Okay, fundamental question, do those devices currently have any network configuration? Can you double check that they are set up to receive DHCP and do not have static configs?

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/

currently they are set up as "Use static IP address", otherwise they do not get IP address.

once I change the option to "Obtain IP address settings automatically via DHCP" , they go crazy. I mean they assign themselves (?) the addresses like 169.254.100.100

Hi Andbor, 169.254.x.x address is APIPA address that Microsoft developed when devices do not have network communication, so a device will assign itself an IP from a global reserved subnet to maintain LAN communications.

I do not think I am able to help you without logging in to your computer/switch to see how it behaves or if there is possibly a bug. Unfortunately I cannot recreate since I do not have those other products.

If you like, we can try to do a team viewer session.

If that is not comfortable for you, I'd recommend to give Cisco support a call for additional assistance.

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/

Would you be able to do a packet capture and share it with us when one of these devices try to request address via dhcp? Also, if possible, check the MAC addresses for these devices and make sure that they show up in the correct vlan.

Nagaraja

Tom,     

can you plese tell me how to proceeed with team viewer. I do not mind you see my config :-)

Nagaraja,

I am glad to do it, just tell me how to do a packet caupter

Install wireshark on one of the machines in your network (it could be one that has the issue as well). Start wireshark in promiscuous mode (it will record all traffic that is seen on the ethernet interface), then connect the machines that have issues pulling IP from the switch. Once they fail to get the address, stop the wireshark capture and send it to us.

Nagaraja

here it is - the wireshark file.

abc.png

guys, any ideas ?

actually I have just bought the brand-new file server  from QNAP. it is an 870U rack version. still the same problem, the server does not receive IP address. , now if I remove DHCP server functionality from my switch and later, I configure it on my router everything works fine. so it looks like DHCP server implemented in small business switch series is a kind of disaster

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Switch products supported in this community
Cisco Business Product Family
  • CBS110
  • CBS220
  • CBS250
  • CBS350
Cisco Switching Product Family
  • 110
  • 200
  • 220
  • 250
  • 300
  • 350
  • 350X
  • 550X