Ethernet Switching
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Ethernet Switching

BGP VPLS Encapsultation mismatch

‎01-15-2019 09:49 AM

Hi Community,

 

I need deployment a BGP VPLS connection with a Huawei device but I have an error about encapsulation mismatch like describe the next output:

 

Instance: VS-VPLS-KOMPELLA
Edge protection: Not-Primary
Local site: CE-A (3)
connection-site Type St Time last up # Up trans
1 rmt EM

 

root@JUNIPER-POC-E01> ...-path | match "entry|encap|entries"
1:77753851:1:1/96 (2 entries, 1 announced)
Communities: target:3851:3851 Layer2-info: encaps: VLAN, control flags:[0x0] , mtu: 1500
1:77753851:3:1/96 (1 entry, 1 announced)
Page 0 idx 0, (group GR-IBGP type Internal) Type 1 val 0x42291d8 (adv_entry)
Communities: target:3851:3851 Layer2-info: encaps: VPLS, control flags:[0x40] Automatic-Site, mtu: 0, site preference: 100
Communities: Layer2-info: encaps: VPLS, control flags:[0x40] Automatic-Site, mtu: 0, site preference: 100

 

Why i cant change the VPLS encapsultation a VLAN o ETHERNET on BGP Deployments?

 

root@JUNIPER-POC-E01# commit check
re0:
[edit routing-instances VS-VPLS-KOMPELLA protocols vpls encapsulation-type]
'encapsulation-type ethernet-vlan'
Encapsulation type not valid for BGP vpls
error: configuration check-out failed

 

Please let me know your comments, additionally if you know ther are trick for interoperatibility about this deployment.

 

Thanks in advace

 

 

 

 

 

 

 

2 REPLIES 2
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Ethernet Switching
Solution
Accepted by topic author Martin_m2n
‎01-16-2019 09:22 AM

Re: BGP VPLS Encapsultation mismatch

‎01-16-2019 02:36 AM

Hello,

 


@Martin_m2n wrote:

 

 Why i cant change the VPLS encapsultation a VLAN o ETHERNET on BGP Deployments?

  


 

Because RFC 4761 section 3.2.4 https://tools.ietf.org/html/rfc4761#section-3.2.4 says You cannot

 

 The Encaps Type for VPLS is 19.

 

The values are allocated by IANA https://www.iana.org/assignments/bgp-parameters/bgp-parameters.xhtml#bgp-l2-encapsulation-types-regi...

 

Therefore, it is not standards-compliant to use any other encaps type value for BGP VPLS. Please go to Huawei box and make sure it is sending a standards-compliant Encaps Type value in Layer2-info community.

 

HTH

Thx
Alex

 

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Ethernet Switching

Re: BGP VPLS Encapsultation mismatch

‎01-16-2019 09:23 AM

Great explanation and very clear,

 

Thanks for you support

 

BR

 

Martin

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