Thanks very much .. that gives me what I was looking for unfortunately ;) Paul
-----Original Message----- From: Justin Shore [mailto:[email protected]] Sent: November-26-09 10:57 AM To: Paul Stewart Cc: [email protected] Subject: Re: [c-nsp] mlppp dot1q question Paul Stewart wrote: > Hey guys... > > > > Is there any way to run subinterfaces across a MLPPP bundle in IOS? I'm assuming that you want to carry a couple VLANs down a MLPPP bundle, correct? If so then one solution is called BCP (Bridge Control Protocol). It's a fairly old protocol. When I researched it I found references to it in the early 12.x code docs. You probably don't want to consider it though. Command #1 in any config guide you find is 'no ip routing'. That's right; you have to disable routing on your router to use it. We were evaluating the Overture ISG 140/180 Ethernet of bonded DS1 product when we came across it. The OV SE told us that sure it interopted nicely with MLPPP on a 7200. What he didn't mention was that you also had to use BCP, effectively cutting the legs out from under our router. If you happen to have an old 7200 with an older CPU sitting around then you have a nice platform to work with. If you don't and the router you spent big $$$ is also doing routing (fancy that) you probably don't want to use BCP. On a side note, I recall while searching for data on BCP that it's also possible on platforms that use SPAs. If memory serves me correctly you don't have to disable routing on those platforms. On those platforms you can literally apply switchport commands to the Serial interfaces. It looked very slick but we didn't have SPA-capable hardware in that POP to work with at the time so it wasn't a solution for us. Search cisco.com for BCP and you'll find some docs. http://www.cisco.com/en/US/docs/interfaces_modules/shared_port_adapters/conf iguration/6500series/76cfgt1.html#wp1159581 http://www.cisco.com/en/US/docs/interfaces_modules/shared_port_adapters/conf iguration/7600series/76cfgsip.html#wp1182134 http://www.cisco.com/en/US/docs/ios/bridging/configuration/guide/br_bcp_ps10 591_TSD_Products_Configuration_Guide_Chapter.html http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gt_bcp.html http://www.cisco.com/en/US/docs/ios/bridging/configuration/guide/br_bcp_ps69 22_TSD_Products_Configuration_Guide_Chapter.html Or are you asking if it's possible to break a MLPPP bundle of a couple DS1s into a couple different MLPPP bundles while still maintaining some manner of link redundancy when spanned across the 2 (or more) DS1s? If that's the case then you could look at creating multiple channel-groups in the controller config. Say for example t1 10 channel-group 0 timeslots 1-12 t1 10 channel-group 1 timeslots 13-24 t1 11 channel-group 0 timeslots 1-12 t1 11 channel-group 1 timeslots 13-24 Then put Se1/0/10:0 and Se1/0/11:0 into a MLPPP bundle and Se1/0/10:1 and Se1/0/11:1 into a separate MLPPP bundle. The downside is that there is no sharing of bandwidth between the 2 unique bundles. Best of luck Justin _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
