This post is more than 5 years old
3 Posts
0
33805
7048 Routing/DHCP relay with 5548
Hi,
I am having issue with the 5548 not relaying the DHCP request for PXE (SCCM), 5548 is connected to 7048 (Trunk). We are Cisco shop, this is the first time I am using DELL. Any help is appreciated.
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7048
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!Current Configuration:
!System Description "PowerConnect 7048, 4.2.2.3, VxWorks 6.6"
!System Software Version 4.2.2.3
!System Operational Mode "Normal"
!
configure
gvrp enable
vlan database
vlan 2,10-11,21,50-52,156
vlan routing 1 1
vlan routing 10 2
vlan routing 21 3
vlan routing 50 4
vlan routing 51 5
vlan routing 52 6
vlan routing 156 7
vlan routing 2 8
vlan routing 11 9
vlan association subnet 10.112.0.0 255.255.252.0 10
vlan association subnet 10.112.4.0 255.255.255.0 11
vlan association subnet 10.116.4.0 255.255.252.0 21
slot 1/0 5 ! PowerConnect 7048
slot 1/1 11 ! SFP+ Card
slot 1/2 9 ! CX4 Card
slot 2/0 6 ! PowerConnect 7048P
slot 2/1 11 ! SFP+ Card
slot 2/2 9 ! CX4 Card
stack
member 1 5 ! PCT7048
member 2 6 ! PCT7048P
ip routing
ip route 0.0.0.0 0.0.0.0 192.168.1.58
ip route 10.0.0.0 255.0.0.0 192.168.1.58
interface vlan 1
exit
interface vlan 2
ip address 192.168.1.57 255.255.255.252
ip local-proxy-arp
no ip redirects
exit
interface vlan 10
ip address 10.112.0.1 255.255.252.0
no ip redirects
exit
interface vlan 11
ip address 10.112.4.1 255.255.255.0
ip helper-address 10.112.1.50
ip local-proxy-arp
no ip redirects
exit
interface vlan 21
ip address 10.116.4.1 255.255.252.0
ip helper-address 10.112.1.50
ip helper-address 10.112.1.51
exit
interface Te1/1/2
description 'F2_NTR_4'
gvrp enable
spanning-tree portfast
switchport mode trunk
dot1x port-control force-authorized
exit
------
5548
------
vlan database
vlan 10-11,21
exit
gvrp enable
ip dhcp relay enable
stack master unit 1
!
interface vlan 1
ip address dhcp
!
interface vlan 10
ip address 10.112.0.4 255.255.252.0
ip dhcp relay enable
ip proxy-arp
interface gigabitethernet1/0/18
spanning-tree portfast
switchport access vlan 21
ip route 0.0.0.0 0.0.0.0 10.112.0.1
interface tengigabitethernet1/0/1
description F2_NTM
gvrp enable
spanning-tree portfast auto
switchport mode trunk
SW version 4.1.0.1 (date 05-Apr-2012 time 15:03:04)
Gigabit Ethernet Ports
=============================
no shutdown
speed 1000
duplex full
negotiation
flow-control on
mdix auto
no back-pressure
spanning-tree
spanning-tree mode RSTP
qos basic
qos trust cos
eee enable
SCCM PXE server is fine, tested on Cisco gear.
SHAFA4
3 Posts
1
July 30th, 2012 14:00
This is weird, PXE start working when I hard code the fiber link between switches to full duplex, even though they are showing the full duplex in auto. Thanks for your help.
DELL-Willy M
802 Posts
1
July 30th, 2012 11:00
Do you have an IP helper address set up on the 55xx switch? Page 617 of the CLI Guide.
support.dell.com/.../en_ug.pdf
ip helper-address
Use the ip helper-address Global Configuration mode command to enable
the forwarding of User Datagram Protocol (UDP) broadcast packets received
on an interface to a specific (helper) address. Use the no form of this
command to disable the forwarding of broadcast packets to a specific (helper)
address.
Syntax
ip helper-address {ip-interface | all} address [udp-port-list]
no ip helper-address {ip-interface | all} address
Parameters
• ip-interface—Specifies the IP interface.
• all—Specifies all IP interfaces.
• address—Specifies the destination broadcast or host address to which to
forward UDP broadcast packets. A value of 0.0.0.0 specifies that UDP
broadcast packets are not forwarded to any host.
• udp-port-list—Specifies the destination UDP port number to which to
forward broadcast packets. (Range: 1–65535)
Default Configuration
Forwarding of User Datagram Protocol (UDP) broadcast packets received on
an interface to a specific (helper) address is disabled.
If udp-port-list is not specified, packets for the default services are forwarded
to the helper address.
SHAFA4
3 Posts
0
July 30th, 2012 11:00
Device connected to access port does get dhcp ip from the server without defining the ip helper address on 5548, IP dhcp relay enable is functioning, problem is with PXE, I already tried the above suggested with no luck. :(
DELL-Willy M
802 Posts
1
July 30th, 2012 13:00
Do you have portfast set up on the interface trying to PXE?
Console(config)# interface gigabitethernet 1/0/15
Console(config-if)# spanning-tree portfast
In PortFast mode, the interface is immediately put into the forwarding state upon linkup, without waiting for the standard forward time delay.
DELL-Willy M
802 Posts
0
July 30th, 2012 16:00
I'm glad you figured it out. Thanks for your contribution to the community.