Reasons for MLAG on Summits
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12-06-2016 06:30 AM
Hello, everybody!
I am an engineer at partner company and we are going to make a business event for our customers. My presentation is about MLAG on BD8806 with VRRP.
I suppose that I will be asked a question about why there is MLAG on Summit Switches, which could be stacked easily?
Could you please give me some ideas?
Many thanks in advance,
Ilya
I am an engineer at partner company and we are going to make a business event for our customers. My presentation is about MLAG on BD8806 with VRRP.
I suppose that I will be asked a question about why there is MLAG on Summit Switches, which could be stacked easily?
Could you please give me some ideas?
Many thanks in advance,
Ilya
12 REPLIES 12
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12-06-2016 06:48 AM
The MLAG feature allows you to combine ports on two switches to form a single logical connection to another network device.
Why couldn't I do the same with etherchannel? Make 2-summits stack and give a link from both to a required host. At host's side configure teaming or NIC bonding.
I don't understand the diffrence, please, explain.
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12-06-2016 06:33 AM
It's about downtime. When you upgrade a stack, the whole stack must be rebooted. When you upgrade a pair of MLAG-Switches you can upgrade and reboot one by one. With the right design you can achieve a always up core.
Andre
Andre
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12-06-2016 06:33 AM
Besides what André already said, When you stack, the control of the stack is made only by the master control plane. The other switches are serving only the ports. On a MLAG configuration, both control planes are active and processing, so load is shared, and processing capability is added.
