MLAG issue


Userlevel 1
we want to createing MLAG between 2 switches X620. During MLAG creation does IP of all VLAN between 2 switches be same using or same subnet range using.
Suppose that 2 switches(X620) we have and we have 5 vlan and there vlan-IP applied on switch-1. Does IP of all vlan's of switch-1 would be same using on switch-2 or any same subnet range.
Switch-1(X620)
VLAN2=192.168.1.2
VLAN3=10.10.10.1
Switch-2(X620)
VLAN2=192.168.1.2
VLAN3=10.10.10.1

14 replies

Userlevel 3
Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew
Userlevel 4
How are you going to define connection to switch-1 and switch-2 within a single vlan, having same ip?
Userlevel 1
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew

I want to define VRRP active-active. Please give procedure.
Userlevel 1
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew


How do i define gateway's of VLAN, because I am connecting firewall link to both X620 switch so that's why for redundant connectivity to firewall we want to configure gateway?
Userlevel 3
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew

Alok,

Here is a link to a knowledge article that summarizes the steps on how to configure Active-Active VRRP on MLAG peers:

https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-VRRP-active-active-on-MLA...

Best regards,
Andrew
Userlevel 1
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew

For creating ISC between 2 switch which LAG algorithm as per condition?
Userlevel 3
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew

For the ISC links between the MLAG peers, you can create an LACP LAG
Userlevel 2
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew

Active-active can be used. You will need to write an ACL to block the VRRP advertisements in order to achieve this. Andrew has attached a link to an article earlier in this thread.
Userlevel 7
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew

Starting with 16.1 (16.2?), you have Fabric Routing to do that active/active VRRP without the ACL trick.
Userlevel 1
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew


How do we create root bridge for Switch-A to vlan-1 and root bridge for Switch-B to vlan-2 in MLAG?
Userlevel 7
Andrew Imam wrote:

Hi Alok,

If you intend to configure/enable VRRP on each of the MLAG peers to provide Layer 3 Gateway Redundancy, then for each VLAN you can assign a unique IP address and configure another IP address to be used for VRRP (the same IP on both switches). For example:

Switch-1(X620)
VLAN2=192.168.1.2/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.2/24 /VRRP IP=10.10.10.254/24
Switch-2(X620)
VLAN2=192.168.1.3/24 /VRRP IP=192.168.1.254/24
VLAN3=10.10.10.3/24 /VRRP IP=10.10.10.254/24

As part of your network design, you would need to determine whether you want to setup VRRP with one switch as the VRRP master and the second switch as the VRRP Backup or you would like to have Active-Active VRRP.

Please let us know if you have any other questions.
Thank you.

Best regards,
Andrew

You don't, MLAG uses all links at the same time. STP is not supported on MLAG ports on EXOS, see e.g. "Can I combine MLAG and STP?".
Userlevel 1
How do we create root bridge for Switch-A to vlan-1 and root bridge for Switch-B to vlan-2 in MLAG?
Userlevel 7
Hi Alok,

with MLAG you do not define a root bridge. You define a root bridge for STP, but EXOS does not allow the use of STP on an MLAG port.

Thanks,
Erik

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