[Xorp-users] PIM SM and VLAN

[Eric S. Johnson]

chicho.mancho at gmail.com said:
> This configuration is working the protocol goes up. PIM neighbor
> says the same thing - UP.

> Then I made a configuration without configuring PIM, but with VLAN
> vif: 

Interesting. I hit this just the other day...

    interface eth0 {
        vif "eth0.xx" {
            disable: false
            vlan {
                vlan-id: xx
            }
            address x.x.x.x {
                prefix-length: xx
                disable: false
            }
        }
        vif "eth0.yy" {
            disable: false
            vlan {
                vlan-id: yy
            }
            address yy.yy.yy.yy {
                prefix-length: yy
                disable: false
            }
        }
 

style declarations would not work with plumbing config like this

plumbing {
        mfea4 {
                interface eth0 {
                        vif "eth0.xx" {
                                disable: false
                        }
                        vif "eth0.yy" {
                                disable: false
                        }
		}
                interface register_vif {
                        vif register_vif {
                                disable: false
                        }
                }

	}
}

It wouldn't let me commit it. 


 
But if your interface configs are like this

interfaces {
    interface "eth0.xx" {
        description: ""
        disable: false
        discard: false
        unreachable: false
        management: false
        vif "eth0.xx" {
            disable: false
            address xx.xx.xx.xx {
                prefix-length: xx
                disable: false
            }
        }
    }
    interface "eth0.yy" {
        description: ""
        disable: false
        discard: false
        unreachable: false
        management: false
        vif "eth0.yy" {
            disable: false
            address yy.yy.yy.yy {
                prefix-length: yy
                disable: false
            }
        }
    }
}


and your plumbing is 


plumbing {
    mfea4 {
        disable: false
        interface "eth0.xx" {
            vif "eth0.xx" {
                disable: false
            }
        }
        interface "eth0.yy" {
            vif "eth0.yy" {
                disable: false
            }
        }
        interface "register_vif" {
            vif "register_vif" {
                disable: false
            }
        }
    }
}


It takes it fine and works.


This is on CentOS linux 5.4 with kernel 2.6.18-164.6.1.el5


Odd eh? In either case I had let CentOS create the vlans (but not 
assign layer 3 addresses) before starting xorp.


A post to this list last year from Pavlin Radoslavov was what made me think
to try that. 

http://mailman.icsi.berkeley.edu/pipermail/xorp-users/2009-February/003032.html

So I guess it is a known bug.

E