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тАО09-13-2010 02:45 AM
тАО09-13-2010 02:45 AM
I've enabled dhcp-snooping on a 5300xl switch running the E.11.21 firmware and configured it to write the database to a tftp server at 15 minute intervals (the tftp server is on the Default VLAN). The snooping itself is working, but the switch is not writing the database - I'm seeing this behaviour on 3 different 5300xl switches.
This is how I configured it:
Switch(config)# no dhcp-snooping option 82
Switch(config)# dhcp-snooping vlan 3 5 11 12 17
Switch(config)# interface A1,B24 dhcp-snooping trust
Switch(config)# dhcp-snooping database file "tftp://xxx.xx.xx.69/switch.dhcp" delay 900
Switch(config)# dhcp-snooping
Switch(config)# wr mem
This is the 'show dhcp-snooping' output:
DHCP Snooping Information
DHCP Snooping : Yes
Enabled Vlans : 3 5 11-12 17
Verify MAC : Yes
Option 82 untrusted policy : drop
Option 82 Insertion : No
Store lease database : Yes
URL : tftp://xxx.xx.xx.69/switch.dhcp
Read at boot : no
Write delay : 900
Write timeout : 300
File status : delaying
Write attempts : 0
Write failures : 0
Last successful file update :
There are currently around 25 leases in the binding table. I've set it up in the same way on a 5400zl switch and that works fine. I've also confirmed the switch can write to the tftp server by running a copy command-output.
Has anyone else had problems with this on a 5300?
Ta,
Paul
Solved! Go to Solution.
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тАО09-14-2010 10:37 PM
тАО09-14-2010 10:37 PM
Re: DHCP snooping problem on 5300xl
Also make sure that the TFTP service is working.
ProCurve Switch 5308xl(config)# tftp
client Enable/Disable tftp client
server Enable/Disable tftp server
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тАО09-17-2010 12:40 AM
тАО09-17-2010 12:40 AM
Re: DHCP snooping problem on 5300xl
I can ping the tftp server from the switch, and I tried the tftp client and tftp server commands in config mode, but it's made no difference.
The file status is still 'delaying' and there's been 0 write attempts.
Thanks.
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тАО09-17-2010 01:00 AM
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тАО09-17-2010 01:04 AM
тАО09-17-2010 01:04 AM
Re: DHCP snooping problem on 5300xl
Odd but I'll play with it some more :)
Thanks!
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тАО09-17-2010 01:06 AM
тАО09-17-2010 01:06 AM