topic Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2 in ExtremeSwitching (EXOS/Switch Engine)

DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexey_shaverne — Thu, 17 Oct 2019 12:33:51 GMT

Hi colleagues, the question is, can I make a DHCP server on Summit x440-g2-24t-10ge. I try but cannot. I want my own DHCP server for each VLAN. Tell me please.

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexandr_P — Thu, 17 Oct 2019 18:07:10 GMT

Hello!

You can configure it - https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-the-DHCP-server-on-a-VLAN-in-EXOS/?q=exos+dhcp&l=en_US&fs=Search&pn=1

But there is recommendation to use external DHCP server.

Better used switch with DHCP server as a temporary solution.

Thank you!

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexey_shaverne — Thu, 17 Oct 2019 19:05:18 GMT

I know that . but i ts not work! maybe reboot?

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexandr_P — Thu, 17 Oct 2019 19:14:46 GMT

Could you show #sh dhcp-s ?

It’s have to be like that:

# sh dhcp-server "test"
VLAN "test":
DHCP Address Range : 172.16.0.50->172.16.0.100
Netlogin Lease Timer : Not configured (Default = 10 seconds)
DHCP Lease Timer : Not configured (Default = 7200 seconds)
Ports DHCP Enabled : 1-10

Thank you!

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexey_shaverne — Fri, 18 Oct 2019 15:50:35 GMT

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexandr_P — Fri, 18 Oct 2019 17:01:59 GMT

Is there possibility that another DHCP server exist in vlan video2?

Because you have your dhcp poll 10.1.80.2 - 10.1.81.254 and client (in #show iparp) receive address 10.1.7.88.

Thank you!

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexey_shaverne — Fri, 18 Oct 2019 17:17:59 GMT

There is no other DHCP in this vlan. the device received this address when it was in another vlan. This is a local test vlan on a single switch.

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexandr_P — Fri, 18 Oct 2019 17:36:39 GMT

does ports 20-22 tagged or untagged in vlan 80?
what is client device “Rubezh”? (I mean device with tagged or untagged ports?)
vlan 80 ipaddress is configured with what mask?
could you try to configure dhcp pool based on /24 mask

Thank you!

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexey_shaverne — Fri, 18 Oct 2019 18:20:53 GMT

device untagged

i need 23 mask

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexandr_P — Fri, 18 Oct 2019 19:08:18 GMT

From my lab - normally working.

# sh sw

SysName: X440-48t

# show "test"
VLAN Interface with name test created by user
Admin State: Enabled Tagging: 802.1Q Tag 80
….
Primary IP: 10.1.80.1/23
…..
Ports: 2. (Number of active ports=1)
Untag: 28, *48

# show dhcp-server
VLAN "test":
DHCP Address Range : 10.1.80.2->10.1.81.254
Netlogin Lease Timer : Not configured (Default = 10 seconds)
DHCP Lease Timer : Not configured (Default = 7200 seconds)
Default Gateway : 10.1.80.1
Ports DHCP Enabled : 28,48

===========================================================================
IP MAC State Lease Time Left
===========================================================================
10.1.80.2 00:26:22:c3:bd:88 Assigned 0001:59:06

# show iparp te
VR Destination Mac Age Static VLAN VID Port
VR-Default 10.1.80.2 00:26:22:c3:bd:88 0 NO test 80 48

Thank you!

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexey_shaverne — Fri, 18 Oct 2019 20:39:26 GMT

dot work!!!

Re: DHCP SERVER FOR EACH vlan ON SUMMIT X440-G2

Alexey_shaverne — Wed, 13 Nov 2019 14:35:06 GMT

* ServersSwitchCanon.8 # show dhcp-server
VLAN "DSPH":-Stamping Mode: None
DHCP Address Range : 10.1.90.2->10.1.91.254
Netlogin Lease Timer : Not configured (Default = 10 seconds)
DHCP Lease Timer : 1600000 seconds
Default Gateway : 10.1.90.1
Primary DNS Server : 10.1.3.5
WINS Server : 10.1.3.5
Ports DHCP Enabled : 1

* ServersSwitchCanon.9 # show iparp port 1
VR Destination Mac Age Static VLAN VID Port

Dynamic Entries : 645 Static Entries : 0
Pending Entries : 0

ARP address check: Enabled ARP refresh : Enabled
Timeout : 20 minutes ARP Sender-Mac Learning : Disabled
Locktime : 1000 milliseconds
Retransmit Time : 1000 milliseconds
Reachable Time : 900000 milliseconds (Auto)
Fast Convergence : Off

ARP Global Settings
Max Entries : 12288
Max Pending Entries : 256
Max Proxy Entries : 256

ServersSwitchCanon.10 # show fdb port 1
MAC VLAN Name( Tag) Age Flags Port / Virtual Port List
------------------------------------------------------------------------------------------------------
70:5a:b6:47:05:9c DSPH(2222) 0029 d m 1

Flags : d - Dynamic, s - Static, p - Permanent, n - NetLogin, m - MAC, i - IP,
x - IPX, l - lockdown MAC, L - lockdown-timeout MAC, M- Mirror, B - Egress Blackhole,
b - Ingress Blackhole, v - MAC-Based VLAN, P - Private VLAN, T - VLAN translation,
D - drop packet, h - Hardware Aging, o - IEEE 802.1ah Backbone MAC,
S - Software Controlled Deletion, r - MSRP,
X - VXLAN, Z - OpenFlow, E - EVPN

Total: 786 Static: 0 Perm: 0 Dyn: 786 Dropped: 0 Locked: 0 Locked with Timeout: 0
FDB Aging time: 300

Why won't my device get an address? tell me please people. I 'am very angry.