Ethernet Switching
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Ethernet Switching

layer2-control bpdu-block vs. bpdu-block-on-edge?

‎01-09-2015 12:27 AM

Hi all,

 

Can anyone explain the difference between:

 

set protocols layer2-control bpdu-block

 

and:

 

set protocols rstp bpdu-block-on-edge

 

Looking at the documentation, they both shutdown interfaces when BPDUs are received.

1 REPLY 1
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Ethernet Switching

Re: layer2-control bpdu-block vs. bpdu-block-on-edge?

‎01-09-2015 12:51 AM

The equivalent of s'et protocols layer2-control bpdu-block' is 'set ethernet-switching-options bpdu-block'.

 

The first one is used by MX and EX/QFX(only when ELS CLI is being used). The second one is used by EX(non-ELS CLI).

 

These two can block the BPDU on any interface you want without being defined under xSTP protocol.

 

This one, 'set protocols rstp bpdu-block-on-edge', will block BPDU only if that interface is configured as edge under RSTP:

 

For instance,

 

{master:0}[edit]
root@EX3300# show protocols rstp
interface ge-0/0/10.0 {
    edge;
}
bpdu-block-on-edge;

{master:0}[edit]
root@EX3300#

 

 

 

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