[zebra 23172] Support for Multiprotocol Extensions for BGP-4 in Zebra

[Bishista]

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Hi,
Can someone tell me how to enable the MBGP attributes in Zebra.
I have tried
neighbor peer version version
to enable MBGP in Zebra but the command does not work.

 

I have tried Quagga too. But that also does not allow setting the value as 4+, though it sets as 4 and 4-.

Thanks and Regards,
Bishista
----- Original Message -----
From: Bishista
To: zebra@...
Sent: Friday, March 20, 2009 12:05 PM
Subject: [zebra 23170] Support for Multiprotocol Extensions for BGP-4 in Zebra


Hi All,

I need to interoperate my software with Zebra.

My software uses MP_REACH_NLRI attribute at every UPDATE message and expects the same from Zebra.
But I see Zebra sending out the regular NEXT-HOP and NLRI attributes whereas I need them in MP_REACH_NLRI  & MP_UNREACH_NLRI attributes.

The Zebra documentation, says that we can set the BGP version to 4+ to enable the support of Multiprotocol Extensions for BGP-4.
neighbor peer version versionBGP

Set up the neighbor's BGP version. version can be 4, 4+ or 4-. BGP version 4 is the default value used for BGP peering. BGP version 4+ means that the neighbor supports Multiprotocol Extensions for BGP-4. BGP version 4- is similar but the neighbor speaks the old Internet-Draft revision 00's Multiprotocol Extensions for BGP-4. Some routing software is still using this version.

However, if I specify this command to set the version as 4+, zebra gives the following error
There is no such command.
Error occured during reading below line.
  neighbor 192.38.14.2    version 4+
I also cross checked Zebra code, but it allows to set only version 4. Thus Zebra does not send these  MP_REACH_NLRI /MP_UNREACH_NLRI in its UPDATE.
I have tried zebra-0.95a for this. Is there any newer verion of Zebra that supports these attributes.
Or is there some other mechanism to enable Multiprotocol Extensions.

Thanks and Regards,
Bishista



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[Arnold Nipper]

On 02.04.2009 07:41 bishista wrote

> Can someone tell me how to enable the MBGP attributes in Zebra.
> I have tried
> *neighbor peer version version*
> to enable MBGP in Zebra but the command does not work.
>  
> I have tried Quagga too. But that also does not allow setting the value
> as 4+, though it sets as 4 and 4-.
>

pick the one you need ...

rs1(config)# router bgp xxx
rs1(config-router)# address-family
  ipv4   Address family
  ipv6   Address family
  vpnv4  Address family

rs1(config-router)# address-family ipv4
  multicast  Address Family modifier
  unicast    Address Family modifier
  <cr>

rs1(config-router)# address-family ipv6
  multicast  Address Family modifier
  unicast    Address Family modifier
  <cr>

rs1(config-router)# address-family vp
rs1(config-router)# address-family vpnv4
  unicast  Address Family Modifier
  <cr>


Arnold
--
Arnold Nipper / nIPper consulting, Sandhausen, Germany
email: arnold@...       phone: [phone]
mobile: [phone]         fax: [phone]



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