Sorry to drag this one up - Gert did you ever get a working config for this?
I plan on using a pair of 920's with a layer 2 broadcast domain on the 12 gigabit Ethernet ports, and using the 10g ports to connect to separate carriers, bust also use 1 10g port to carry the HSRP for the /24 customer address space. The 1 gig ports will all need to be in the customer's /24 that they will advertise to the independent carriers, I would like run STP in case of a cabling error, but the routers are entirely owned by them, in their data center, and only to be used for ipv4 BGP internet services and a default route from each carrier. Usually we set this up with a pair of routers and 2 switches - in this case I need to do it all on a ASR-920-12SZ-IM (cheap 10g router) Is this possible? Nick -----Original Message----- From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Gert Doering Sent: Thursday, October 19, 2017 2:46 AM To: Peter Rathlev <pe...@rathlev.dk> Cc: Gert Doering <g...@greenie.muc.de>; cisco-nsp@puck.nether.net Subject: Re: [c-nsp] spanning-tree for local switching on ASR920 This Message originated outside your organization. Hi, On Thu, Oct 19, 2017 at 06:05:47AM +0200, Peter Rathlev wrote: > On Wed, 2017-10-18 at 15:39 +0200, Gert Doering wrote: > > I have an ASR920 that is supposed to have gi0/0/10 and gi0/0/11 in > > the same bridge group, with a routed IP: > > > > interface GigabitEthernet0/0/10 > > no ip address > > media-type auto-select > > negotiation auto > > cdp enable > > service instance 10 ethernet > > encapsulation untagged > > l2protocol peer stp > > bridge-domain 10 > > ! > > We don't use STP on ASR920, but my guess is that you need "bridge- > domain from-encapsulation" in the service instance configuration. So where would untagged packets land, then? "tag 10 -> bridge 10" I could understand, but this is just plain untagged... > https://www.cisco.com/c/en/us/td/docs/routers/asr920/configuration/gui > de/lanswitch/lanswitch-xe-3s-asr920-book/lanswitch-xe-3s-asr920-book_c > hapter_0101.html#task_1000030 > > Then configure STP for VLAN "10". It doesn't seem like there is any > way to map to an arbitrary PVST instance, VLAN ID and bridge domain ID > has to match. I need to test this :-) - though it feels... weird. gert -- USENET is *not* the non-clickable part of WWW! //www.muc.de/~gert/ Gert Doering - Munich, Germany g...@greenie.muc.de fax: +49-89-35655025 g...@net.informatik.tu-muenchen.de _______________________________________________ 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/
