Mike's PBX Cookbook

Another DHCP Configuration

This page describes IP phone deployment using a DHCP sever, without a TFTP server.
- We can pass the necessary Nortel Option String configuration as DHCP option strings.

1 Scope Options (active for this scope only)

2 Server Options (active for all scopes)

DHCP Router Option 003 DHCP Nortel A String Option 128 DHCP Nortel B String Option 227

The finished configuration will look like this:

DHCP Server Options

ERS Configuration

The ERS setup may comprise a PBX room 5530, and 4548's in the closets.

enable
configure terminal
snmp-server name "5530_Distribution_Switch"
ip default-gateway 10.10.0.254
ip address stack 10.10.0.253
ip address unit 1 10.10.0.251
ip address unit 2 10.10.0.252
ip address netmask 255.255.255.0
stack forced-mode
spanning-tree port-mode auto
vlan create 2,101,255 type port 1
vlan name 1 "ELAN"
vlan name 2 "TLAN"
vlan name 101 "IP PHONE"
vlan name 255 "Tail Sites"
vlan ports 1/1-2,1/13-24,2/1-2,2/13-24 tagging tagAll 
vlan configcontrol flexible
vlan members 1 1/1-11,1/13-26,2/1-26
vlan members 2 1/1-2,2/1-2
vlan members 101 1/13-24,2/13-24
vlan members 255 1/12
vlan ports 1/12 pvid 255
no auto-pvid
mlt 1 name "ELAN_TLAN Switch" enable member 1/1-2,2/1-2 
spanning-tree port-mode normal
interface FastEthernet ALL
spanning-tree port 1/1-2 learning disable
spanning-tree port 2/1-2 learning disable
exit                                     
mlt spanning-tree 1 stp 1 learning disable
ip routing
interface vlan 2                            
ip address 11.10.0.253 255.255.255.0 2
exit
interface vlan 101
ip address 11.11.15.254 255.255.240.0 101
exit
interface vlan 255
ip address 11.11.255.253 255.255.255.252 255
exit
ip route 0.0.0.0 0.0.0.0 10.10.0.254 10
ip route 11.10.14.0 255.255.255.240 11.11.255.254 1
ip route 11.10.14.16 255.255.255.240 11.11.255.254 1
vlacp enable
vlacp macaddress 180.c200.f
interface FastEthernet ALL
vlacp port 1/1-2,2/1-2 timeout short
vlacp port 1/1-2,2/1-2 timeout-scale 5
vlacp port 1/1-2,2/1-2 enable
exit
ip dhcp-relay fwd-path 11.11.15.254 11.10.0.28 
ip dhcp-relay fwd-path 11.11.15.254 11.10.0.28 mode dhcp
save config
Closet config:

enable
configure terminal
ip default-gateway 10.10.0.254
! change the switch IP address below
ip address switch 10.10.0.211
vlan create 101 type port 1
vlan name 1 "ELAN"
vlan name 101 "IP PHONE"
vlan ports 47-48 tagging tagAll 
vlan configcontrol flexible
vlan members 1 47-48
vlan members 101 1-48
vlan ports 1-45 pvid 101
no auto-pvid
save config
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