what is a SUPERLOOP? 1

[coniglio]

i have four T1s which i understand are four individual loops. I'm looking at a traffic study which also shows my "superloops". What is this? I've heard of superloops but never knew what they meant. Thank you.

 

[kcfonman]

Here is the way an Option 11 show the traffic.
If Slots 1-9 are used for DTI, PRI, TDS, or MISP, they will show up as
Loop Slot
20 1
21 2
22 3
23 4
24 5
25 6
26 7
27 8
28 9
If the cards are line or analog trunk, then the superloop table must be used;
SUPL Slot
0 1,2,3,4
4 5,6,7,8
8 9,10,11,12
12 13,14,15,16
16 17,18,19,20
32 21,22,23,24
36 25,26,27,28
40 29,30
Super loop 48 is funky, 48-0-0-0 ti 48-0-0-7 map to 0-0 and to 0-7. 48-0-050- to 48-0-5-7 map to 0-8 to 0-15. The other TN's are unused.

This is why you see super loops in your traffic and you can't find your cards. I hope this hasn't confused you too much.

 

[coniglio]

sorry, but it has. I'm totally lost. Plus, I have an option 61C. is all the above info relevant to an option 61? thank you.

 

[kcfonman]

Opps, Sorry for the confusion.

Your super loops are where you 16 line cards, TDS, analog trunks, Line side T1, MIPCD, MIRAN, MICA and other cards that are not network based. Ie; TN 0 0 0 15 would be super loop 0 shelf 0 card 0 unit 15. You can have a max to 2 shelves, and 16 cards per super loop.

 

[techman3030]

roughly speaking, a superloop is comprised of 4 loops tied together creating a "super"loop. so you have the associated timeslots of four loops that you can use for a single shelf or split up via the cableing from the net card in your core/net module to more than one shelf if you don't have as much traffic. It's a little hard to understand unless you have some install/maint. training. Hope this helps.

 

[wdhb]

This an involved question & you need to understand the physical architecture of Nortel switches. This a really brief overview

1st you need to understand the SL1 architecture, eg NT, XT etc

Basically we'er looking at the Network shelf layout and I'll use an NT for my model. An NT was a single Group switch which meant it had 1 Network Group comprising 16 card slots. Each card slot has 2 Network loops, eg Network slot 1 supports loops 0 & 1 to slot 15 which supported loops 30 & 31. Each Network loop had 30 time slots, think E1. Each card shelf would typically use 1 Network loop, but there were in typical Nortel fashion many combinations. This meant you had 30 time slots per 10 card shelf. In the Network shelf you also had items such as your Conf loops, T1 or E1 etc.

When Nortel made the Meridian range they replaced the NT with the Opt61 which is still a single Network Group switch. The XT became an Opt71 then 81 & is a 5 Network Group switch. With the Opt61, they created the Superloop & the IPE shelf. A superloop = 4 Network loops. If you look at a Network shelf in the Opt51/61/81 you will see at the base of the shelf the 1st 2 card slots bracketed as O, the next 2 as 4 & the next 2 as 8. This indicates Network loops 0,1,2,3 = Superloop 0 & 4,5,6,7 = Sl4. Typically you would use 1 Superloop per IPE, depending on your switches traffic. You can however, share 1 Superloop per 2 IPE or have 4 Superloops per IPE. 4 Superloops would give you
4 x 4 x 30 channels = a non blocking switch.

This means a TN = Superloop + shelf + card + port.

The Opt11 was a small box using the exisiting s/w so it is actually a bastard. In cabinet 0, the 1st 4 slots are Network loops 0 to 3. This means the Opt11 is all shelf 0 & the card number is always the loop number so you only need to enter the loop & port for the TN. This is also why, if your working with card mail you will see the voice ports as 008-0 etc as they are Superloop 8.

This really brief I know but that's all I've got time for. If your looking at your traffic stats, what you would be interested in is to see if at any point you are getting excessive FTM issues or if you are setting a thresh hold, if any of you shelves are overloded.