Of course, if you're in the UK, you are (I think) probably using ETSI ISDN, so the physical config would actually be something like...
controller E1 0 clock source line primary pri-group timeslots 1-31 interface Serial0:15 isdn switch-type primary-net5 ! rest of interface config... That's from an AS5300 running 12.2 - you may want to check that the defaults for framing etc match the 2611XM and your IOS. Dunno about the UK, but here it's possible to purchase PRI services in 10, 20 or 30 channels. I assume that's what you're referring to with 15 channels? JMcL Dave Madland wrote: > > Robert Bentley wrote: > > >Hi > > > >I'm slowly getting my teeth into the world of cisco - but I am > struggling to > >set up the following. > >I have two Cisco 2611XM routers, each with a serial card and a > PRI card. > >I have set up the serial interfaces with a 30 bit IP address > range, and the > >2Mb serial link works well. I would now like to setup the PRI > interfaces, to > >connect if ever the serial link fails. I have done this before > with BRI > >ISDN, but not with PRI. The plan is to get all 15 channels to > come into use, > >giving me 15x64k=1Mb link (approx) > > > >I can't find any examples on the cisco site - they all talk > about a PRO > >dialling multiple BRI's. > > > >Can anyone assist with two sample configurations, showing the > simplest way > >to achieve this? > > > >Many Thanks, > > > >Rob Bentley > >Bournemouth, UK > > > > > > > You configure the PRI's roughly the same as two BRI's. You > won't find > it on CCO, at least I didn't either a few years back when I > multilinked > 4 PRI'a together. Also you have 24 channels in a PRI not 15. > > > controller T1 1/0 > framing esf > linecode b8zs > pri-group timeslots 1-24 > ! > interface Serial1/0:23 > ip address 4.1.1.1 255.255.255.0 > no ip directed-broadcast > encapsulation ppp > dialer idle-timeout 300 > dialer string 3599327 > dialer load-threshold 3 either > dialer-group 1 > isdn switch-type primary-ni > fair-queue 64 256 0 > ppp authentication chap > ppp multilink > no ppp multilink fragmentation > > OTHER SIDE: > > controller T1 1/0 > framing esf > linecode b8zs > pri-group timeslots 1-24 > ! > interface Serial1/0:23 > ip address 4.1.1.2 255.255.255.0 > no ip directed-broadcast > encapsulation ppp > dialer load-threshold 3 either > dialer-group 1 > isdn switch-type primary-ni > fair-queue 64 256 0 > ppp authentication chap > ppp multilink > no ppp multilink fragmentation > > Dave > > -- > David Madland > CCIE# 2016 > Sr. Network Engineer > Qwest Communications > 612-664-3367 > > "Emotion should reflect reason not guide it" > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74692&t=74433 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
