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29930
February 21st, 2012 10:00
Cross-stack etherchannel PC55xx
Hello,
If I am correct Cisco calls what I am looking for a cross stack etherchannel.
I don't know how Dell calls this or if it 's possible to setup by using the hardware at my disposal.
I have two Dell PC5524 switches and two PC 5448 switches.
PC5524 (sw01/sw02) will be stacked and each PC5448 (sw03 and sw04) will be connected to the stack.
The stack will serve teamed poweredge servers and both PC5448 will serve clients.
I want to setup the PC5448 connections redundantly if one of the stack members dies on me ;)
Currently I think I have to connect and setup something like this:
sw01/e21 -> sw03/e21
sw02/e21 -> sw03/e22
create LAG on stack (sw01/e21+sw02/e21) and sw03/e21+e22
sw01/e22 -> sw03/e23
sw02/e22 -> sw03/e24
create corresponding LAG 's
sw01/e23 -> sw04/e21
sw02/e23 -> sw04/e22
create corresponding LAG 's
sw01/e24 -> sw04/e23
sw02/e24 -> sw04/e24
create corresponding LAG 's
Am I on the right track and validate if this is possible ?
A little push in the right direction would be great and appreciated.
Regards,
Raymond
Raymond Schuili
9 Posts
0
February 21st, 2012 15:00
Hello Daniel,
Thanks for your quick response.
Based on your answer I understand the setup I have in mind is possible using this hardware ?
I have read the suggested pages.
Still learning about this new world which poses my question "Which LAG is the one to go for here ?"
I do not have the hardware yet but I am preparing the configs already.
Would love to hear your thoughts about my first stack brainwave ;)
enable
conf
vlan database
vlan 10
vlan 4094
exit
interface vlan 10
name LAN
exit
interface vlan 4094
name MGMT
ip adress 172.20.1.1 /24
exit
interface gi1/0/21
channel-group 1 mode auto
exit
interface gi1/1/21
channel-group 1 mode auto
exit
interface channel-group 1
description LAG21-SW03-2122
switchport mode trunk
switchport trunk allowed vlan 10,4094
exit
interface gi1/0/22
channel-group 2 mode auto
exit
interface gi1/1/22
channel-group 2 mode auto
exit
interface channel-group 2
description LAG22-SW03-2324
switchport mode trunk
switchport trunk allowed vlan 10,4094
exit
interface gi1/0/23
channel-group 3 mode auto
exit
interface gi1/1/23
channel-group 3 mode auto
exit
interface channel-group 3
description LAG23-SW04-2122
switchport mode trunk
switchport trunk allowed vlan 10,4094
exit
interface gi1/0/24
channel-group 4 mode auto
exit
interface gi1/1/24
channel-group 4 mode auto
exit
interface channel-group 4
description LAG23-SW04-2324
switchport mode trunk
switchport trunk allowed vlan 10,4094
exit
Regards,
Raymond
Raymond Schuili
9 Posts
0
February 22nd, 2012 11:00
Thank you ....
I have been reading about LAG and LACP and the choice is simpel.
If the switch which you want to aggregate also supports LACP choose LACP.
It 's the best choice by far (as far I can determine) and gives you the benefits you basically want.
Wil dive into which settings are the best ;)
I choose VLAN 4094 as management because I read on several sites using VLAN1 is not a best practice.
I want to create two vlans which can be used on all switches to separate management interfaces from general LAN devices. Maybe I will be needing a third one. I have been reading about vlans but I do not really grasp how to set this up correctly. Creating and assigning ports is not an issue but the tagging or not is ..
The routing command I do not really understand.. as the 5548 is layer2 or ...?
Raymond Schuili
9 Posts
0
February 22nd, 2012 14:00
Okay, it could be I was missing something ...
I am planning to use a WatchGuard XTM 505 for routing between both vlan 's.
or maybe putting a management server with two network interfaces (LAN/mgmt) will do the trick
Your info helps .. a little bit. Must and like to read more.
I have read the wiki documents within the network part of the forum and now
grasp VLAN operability in concept but still in the dark how to configure it.
Basically I want to put the switches and other mgmt interfaces in a separate mgmt vlan while managing them from the lan vlan. To narrow it down later on I will have to do something with ACL 's but that 's not for now.
Do you know a good reference ?
Raymond Schuili
9 Posts
0
February 24th, 2012 10:00
Thanks for sorting this out.... but I not quite sure we are on the same track.
By management vlan I meant creating a separate vlan in which I manage several devices like ups, drac 's, network devices and so on.
Raymond Schuili
9 Posts
0
February 24th, 2012 16:00
No problem perhaps my explanation/questions were a bit off ;)
I 'm beginning to understand VLAN 's and when to tag or not ... :)
Would love to read a good document about it.
If you know one I would be very thankful.