Ethernet Switching
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Ethernet Switching

EX 4200, 3200 switches participating in Provider RSTP

‎03-31-2017 09:59 AM

I have a QinQ network where it basicly forms a triangle 2 parts of the triangle are a Ceragon product, and the 3rd is a juniper EX4200.  I am trying to congure RSTP on them.  The problem is that the Ceragon and the Juniper will not communicate their BPDU frames to each other.  The reason (I beleive) is that the Ceragons are sending their BPDU to 01:80:c2:00:00:08   while the Juniper is sending it to 01:80:c2:00:00:00.

 

After some searching I found this command:

bpdu-destination-mac-address provider-bridge-group;

 

but it doesent exist on the Juniper 4200.  Is it not supported on this switch?  I have tried the feature explorer but its no help.

 

--Andrew

2 REPLIES 2
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Ethernet Switching

Re: EX 4200, 3200 switches participating in Provider RSTP

‎03-31-2017 06:05 PM

Interesting, I do have this option on a 4300:

 

ps@ex4300-test# set protocols rstp bpdu-destination-mac-address ?
Possible completions:
  provider-bridge-group  802.1ad provider bridge group address
{master:0}[edit]

But not on a 4200. This page:

 

https://www.juniper.net/documentation/en_US/junos/topics/concept/bridging-ex-series-understanding.ht...

 

states "In addition to the TPID EtherType value of 0x8100, EX Series switches that run Junos OS that does not support the Enhanced Layer 2 Software (ELS) configuration style also support values of 0x88a8 (Provider Bridging and Shortest Path Bridging) and 0x9100 (Q-inQ)."

 

So this suggests non-ELS switches such as the 4200 support provider bridging via ethertype as opposed to MAC address.

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Ethernet Switching

Re: EX 4200, 3200 switches participating in Provider RSTP

‎04-02-2017 09:46 PM

HI

 

This command I think is supported only on 4300/9200 not on 3200/4200.

 

Thanks

Partha

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