Summary

DHCP service fails when logging on an ACL is applied to a VLAN interface. This is either DHCP relay or server.

Date Identified

March 16, 2017

Date Resolved

N/A

Products Affected

Model

Firmware Version

SG500

1.4.7.06

Issue Description

DHCP relay stops working on SG500 when ACL logging is configured. Below is the example ACL configuration:

ip access-list extended exampleACL

permit ip any any ace-priority 2000 log-input

!

The relay fails when applying the ACL on an interface.

!

interface vlan 3

ip address 10.10.30.2 255.255.255.192

ip dhcp relay enable

service-acl input exampleACL

Workaround

Remove log-input from the ACL permit statement: