<div>
<div class="content wysiwyg-content">
DHCP Server on Cisco Catalyst 3560 trunked to Cisco Catalyst Express 500 dropping DHCP Replies on 500 
Cisco Catalyst 3560 serving up DHCP is trunked to Cisco Catalyst Express 500. 
The CE500 is dropping DHCP replies on the trunked interface and therefor not serving DHCP devices connected to CE500. 
 
Error on CE500 is; &quot;Port Gi1: Dynamic Host Configuration Protocol (DHCP) reply messages dropped for non-existing or disconnected devices on this interface.&quot; 
 
Port Gi1 on CE 500 is setup via Smartport to be Cisco Switch (via macro I assume) 
 
Port GigabitEthernet0/3 on the 3560 is setup as follows; 
 
interface GigabitEthernet0/3 
&nbsp;description Express 500 
&nbsp;switchport trunk encapsulation dot1q 
&nbsp;switchport mode trunk 
&nbsp;macro description cisco-switch 
&nbsp;power inline never 
&nbsp;auto qos voip trust 
&nbsp;spanning-tree link-type point-to-point 
 
 
Need to Serve DHCP from 3560 to CE500
</div>
</div>

DHCP Server on Cisco Catalyst 3560 trunked to Cisco Catalyst Express 500 dropping DHCP Replies on 500
Cisco Catalyst 3560 serving up DHCP is trunked to Cisco Catalyst Express 500.
The CE500 is dropping DHCP replies on the trunked interface and therefor not serving DHCP devices connected to CE500.

Error on CE500 is; "Port Gi1: Dynamic Host Configuration Protocol (DHCP) reply messages dropped for non-existing or disconnected devices on this interface."

Port Gi1 on CE 500 is setup via Smartport to be Cisco Switch (via macro I assume)

Port GigabitEthernet0/3 on the 3560 is setup as follows;

interface GigabitEthernet0/3
 description Express 500
 switchport trunk encapsulation dot1q
 switchport mode trunk
 macro description cisco-switch
 power inline never
 auto qos voip trust
 spanning-tree link-type point-to-point


Need to Serve DHCP from 3560 to CE500

DHCP Server on Cisco Catalyst 3560 trunked to Cisco Catalyst Express 500 dropping DHCP Replies on 500

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.

Regular Expressions

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.

Networking Hardware-Other

The Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol. DHCP allows for computers to be configured automatically to communicate with each other over an IP network without the need for manual setup by a network administrator. The implementation of DHCP relies on a DHCP server to hand out network configuration information to DHCP-capable clients that request an IP address (and other information required or useful in communicating with other devices on an IP network). In addition to an IP address, common configuration information served over DHCP includes a default gateway, subnet mask and DNS sever(s).