• November 24, 2020, 07:25:18 PM
Welcome, Guest. Please login or register. Registration is free.
Did you miss your activation email?

Author Topic: Problem connecting to stack using stack IP  (Read 4690 times)

0 Members and 1 Guest are viewing this topic.

Offline jmw

  • Rookie
  • **
  • Posts: 3
Problem connecting to stack using stack IP
« on: September 03, 2014, 08:59:20 AM »
Hi, what am i doing wrong? I have configured a single stack of Avaya 4850's with several VLANs. Management VLAN is 3201 and assigned to port 1/1. The stack IP address falls into this range. I can PING all VLAN IP addresses, but not the switch itself. I believe this is because no device is connected to the management VLAN and therefore the VLAN is not "warmed up" - no ARP entries. If i connect a device to port 1/1 the switch responds to PINGs. How do i make the stack IP address always respond?


Offline beentherebefore

  • Rookie
  • **
  • Posts: 23
Re: Problem connecting to stack using stack IP
« Reply #1 on: September 03, 2014, 03:48:02 PM »
What firmware are you running? I had the same thing a month ago with 6.3.0 with 5520's and I needed to upgrade the software

Offline jmw

  • Rookie
  • **
  • Posts: 3
Re: Problem connecting to stack using stack IP
« Reply #2 on: September 04, 2014, 03:28:24 AM »
Hi, firmware is version 5.6.4.1, software v5.6.5.012

Offline Telair

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 965
Re: Problem connecting to stack using stack IP
« Reply #3 on: September 04, 2014, 04:21:21 PM »
Typically your management IP is on a VLAN that would be tagged back to your core or to your management network.  Are you routing on these switches, or just passing VLAN's?

Offline adohen

  • Rookie
  • **
  • Posts: 14
Re: Problem connecting to stack using stack IP
« Reply #4 on: September 04, 2014, 11:22:19 PM »
Use a separate mgmt VLAN

ip address stack not ip address switch

vlan x
mgmt


Offline jmw

  • Rookie
  • **
  • Posts: 3
Re: Problem connecting to stack using stack IP
« Reply #5 on: September 05, 2014, 03:34:50 AM »
Yes mgmt VLAN is on a seperate VLAN - 3201 - set using command "vlan mgmt 3201" IP address is stack IP not switch and this falls within the range for VLAN 3201.

This stack is the core, and doing the routing. No other switches on site.

The Stack IP will respond to PINGs if i put the mgmt VLAN on a tagged port to VMware for example - as long as there is a device connected to the VLAN (creating an entry in the forwarding table) it will respond. If no device is connected to the mgmt VLAN the stack IP does not respond to PINGs.

I've set up similar sites where there is more than one stack (same model of switch as in this case) and the mgmt VLAN is tagged back to a core. These switches respond because the mgmt VLAN has devices connected.

Obviously I can manage the stack using the VLAN IP of other VLANs (that have active devices) but how do i get the stack IP address itself to respond without any devices connected to that VLAN?


« Last Edit: September 05, 2014, 03:39:18 AM by jmw »

Offline Paul L

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 755
    • paulaleroux
    • Paul's Networking blog
Re: Problem connecting to stack using stack IP
« Reply #6 on: September 05, 2014, 09:39:45 PM »
this is a common, mis-understood, and often argued "feature" of Nortel/Avaya switches.  You only need to set the mgmt vlan if your switch is L2 only.  This feature trips up all of people because if set up a VLAN interface with an IP and then set that vlan as the mgmt vlan it will move the IP from that VLAN.   
the vlan will route but the IP will not respond. 

if you are routing on your switch simply set the VLAN Interface with an IP. 

conf t
int vlan 3201
Ip address x.x.x.x y.y.y.y

before you do that you will need to remove the IP address off the switch/stack. move the mgmt vlan to vlan 1.  Then add the IP to the VLAN as shown above.

And yes, for that interface to come up you will need to add it to the trunk port or put a device in that vlan.


« Last Edit: September 05, 2014, 09:45:12 PM by Paul L »
ACSS- Avaya Enterprise Routing Switch  #8