[Xorp-users] not getting an alias

Bruce Simpson bms at incunabulum.net
Thu May 7 09:36:52 PDT 2009


Irving Leonard wrote:
> ...
> the problem is that xorp doesn't show alias in ifconfig, even when they are 
> active, checked with an nmap ping scan from another machine. But the bigger 
> problem is that I can't see them either from the xorpsh shell with the "show 
> interfaces", I have 31 vifs (vlans) in one interface, and it only shows the 
> first one, also have an alias in the other interface and only see one address 
> in it (this is with xorpsh). In ifconfig it shows one address for each 
> interface, including vlans.

What is the actual output of 'show interfaces' in xorpsh, and what do 
you expect to see?

To the best of my knowledge the XORP FEA's vlan mechanism is known good 
and working, the complication here may be the introduction of the bond 
driver. It's entirely possible that this bond driver does something new 
that XORP does not expect.

I'm afraid I don't understand how the Linux 'bond' driver works -- my OS 
background is predominantly BSD/Solaris, so I am more up to date with 
innovations there, but from your description it just sounds like 802.3ad 
/ EtherChannel style trunking.

Before we can establish if this is a problem with the code going 
forward, we need to see more detailed information, i.e. logs of the 
behaviour.

A diagram might be really helpful here, I'm not immediately able to 
visualize your network topology based on the information provided so far.

thanks,
BMS



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