OSPF does not work across unnumbered VLAN subinterfaces. http://wiki.nil.com/Unnumbered_Ethernet_VLAN_interfaces#Limitations
Ivan http://www.ioshints.info/about http://blog.ioshints.info/ > -----Original Message----- > From: Michael Ulitskiy [mailto:mulits...@acedsl.com] > Sent: Monday, August 03, 2009 5:10 PM > To: cisco-nsp@puck.nether.net > Subject: [c-nsp] IP unnumbered vlan subinterfaces question > > Hello, > > Guys, are there any drawbacks of doing the following: > > interface Lo0 > ip address 10.10.10.1 255.255.255.0 > ! > interface FastEthernet0/0.1 > encapsulation dot1q 1 native > ip unnumbered Lo0 > ! > ip route 10.10.10.0 255.255.255.0 FastEthernet0/0.1 ! > > as opposed to having ip address configured directly on the > interface as usual? > I need that ip address to stay always up regardless of Fa0/0 > state, 'cause it's used for other services that should stay > up and I'd prefer to avoid assigning another ip address > exclusively for loopback use. > It seems to work in my lab, but I thought I'd better ask... > > Thanks, > Michael > > _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/