Can some please tell me where I can find a configuration guide on how to configure a CSU/DSU T1 for a 3845 Router? For example if I wanted to confiure to work with Verion's T1 service.
your isp/telco should have supplied all the info to you..
ie line code framing and timeslots (not an issue since you are going fullrate T1)
those line codes are probably default on the router anyways but you will need to do the servicemodule t1 timeslots as above and tell the csu to clock on the whole t1.
just make sure you match up to what the provider is giving you.. in some cases they can use other linecodes and framing. (rare)
I've just completed a few installs using Verizon T1 circuit. Here is the config which I used for a 256k circuit [Change the DLCI / Channel numbers] and you might not need the BGP config.
Hope this helps.
!
!
interface Serial0/0/0
no ip address
encapsulation frame-relay IETF
service-module t1 timeslots 1-8
!
interface Serial0/0/0.114 point-to-point
ip address x.x.x.x 255.255.255.252
frame-relay interface-dlci 114 IETF
!
!
router bgp 65001
no synchronization
bgp log-neighbor-changes
network x.x.x.x mask 255.255.255.255
redistribute connected
redistribute static
neighbor x.x.x.x remote-as 65000
no auto-summary
!
which clock source you use, i.e. internal or line, depends who is providing your clocking currently. If it's a Full TI, I would suggest it may be the T1 provider - thus your clocking should be set to line.
Even if the ckt is fractional T1, the controller is still full T1. T1s provided by telco, unless Point to Point, almost always get their clock from Telco. So external or line should be the standard if there is ever a doubt.
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