Ayo
join:2003-12-05
Lawrence, KS | Catalyst 3750
Does any of the catalyst 3750 have T1 uplink options?
If not is there any 24/48 ports switch that has T1 and is NEBS certified? |
|
NetAdmin
CCNA
join:2008-05-22
| said by Ayo  :Does any of the catalyst 3750 have T1 uplink options? No. See »www.cisco.com/en/US/products/hw/···son.html
If not is there any 24/48 ports switch that has T1 and is NEBS certified? 24/48 port, fixed configuration switches? None that I know of off the bat. I know the 6500s support T1s with the proper modules.
--
Kilroy was here |
|
aryoba
Premium,MVM
join:2002-08-22
| reply to Ayo
said by Ayo :Does any of the catalyst 3750 have T1 uplink options? Depending what kind of handoff you have. If the T1 handoff is in form of Ethernet handoff, then you can use 3750 switch to handle it. |
|
Ayo
join:2003-12-05
Lawrence, KS | Yes it is some kind of Ethernet on the other side (having either Cisco or Juniper). How can it handle it? I didn't see T1s in its datasheet |
|
aryoba
Premium,MVM
join:2002-08-22
| Ethernet handoff is just that, Ethernet handoff. All you need is a device that also have Ethernet port; either a switch, router, hub, or even PC.
In regards of handling the Ethernet handoff, it all depends on the objective you try to accomplish. If it is let's say for Internet connection, then your Ethernet equipment must be able to do some routing and maybe some NAT. |
|
Ayo
join:2003-12-05
Lawrence, KS | OK...maybe I'm missing here somthing.
I'm looking for a 24/48 ports switch which could run L3 features like OSPF and IS-IS that could run over T1 connection (and have T1 uplink, so not a two box solution)
What am I missing here? |
|
MrTwister
Premium
join:2003-09-27
Hilliard, OH
| reply to Ayo
NetAdmin is correct, 3750's and I believe E's and Metros
do not support T-1's. Having limited RAM/Dram, yes
the 3750's do layer 3 routing, but they don't have the
memory to support NAT'ing and other memory/cpu intense
applications, that are handled by standard routers and
the larger switches.
Let's just say at the moment they don't, I don't see them
doing it in the future, as Cisco pushes towards the 650X
or other 76XX/etc solution for the heavy lifting.
I believe Cisco classifies the 3750 as a 'work group switch'
hence the 'WS' in the model (WS-3750G-48TS-S, etc.)
C650X support T-1's/DS3's/etc. via a flex wan blade
and PIM's.
We use 6509's at our larger metro sites and in a few
metros' have DS3 redundancy along with a gigaman
triad. Both of the main 6509's have DS3's and are
supporting satellite sites via T-1's.
this is just my/our experience over the past few years
as we've upgraded campus and remote infrastructure
and have ran into a few areas where we've needed to
make a hard decision and go with the 650X series
looking ahead to the future. We've been able to
upgrade services and with a lot of planning and
trial and error (as we all know that best case scenarios
don't always pan out over time, and need to be
readdressed), but we've cut the monthly circuit costs
and still being able to provide Data/Voice/Video conferencing.
Hope this helps. |
|
Ayo
join:2003-12-05
Lawrence, KS
| Thanks Mr Twister, this was my experience too. Unfortently for the application I'm looking at while it is more of carrier and not an enterprise application, the 65xx will be way to expensive.
I don't need it to handle NAT so I don't think this would be an issue.
By the fact that they did NEBS on it I suspect that they did plan to use it in Carrier applications |
|
aryoba
Premium,MVM
join:2002-08-22
1 edit | As MrTwister mentioned, 3750 can do OSPF (and maybe IS-IS) over Ethernet; either LAN environment or Metro Ethernet. You also can consider something like 3845 router with NME-XD-24ES-1S-P module that definitely support OSPF and IS-IS. |
|
Ayo
join:2003-12-05
Lawrence, KS | This is a very expensive solution and even on that one I don't see how T1 uplink can be supported |
|
aryoba
Premium,MVM
join:2002-08-22 | Are you looking for something dirt cheap?
What's your budget? |
|
Ayo
join:2003-12-05
Lawrence, KS | I'm looking for somthing below $2000 |
|
aryoba
Premium,MVM
join:2002-08-22 | You may want to check out this forum's FAQ to find reseller with possible big discounts.
»Cisco Forum FAQ »Where can I purchase a SMARTNet contract or cheap Cisco product? |
|
Ayo
join:2003-12-05
Lawrence, KS | Thanks but I'm still trying to figure out if Cisco at all have somthing like what I'm looking for and so far it seems that don't |
|
aryoba
Premium,MVM
join:2002-08-22
| As mentioned previously, T1 is just a way of how connection is based on. Traditionally T1 is handed off from telco or ISP to customer or subscriber from Smartjack to connect to some DSU/CSU modem. In some cases, ISP or telco brings in fiber mux and provides Ethernet handoff with speed or bandwidth limited to T1 (1.5 Mbps).
Since you say you receive T1 in form of Ethernet handoff, then you can plug in the Ethernet handoff cable to any device that has Ethernet port; either a switch, router, hub, or even PC.
If you plan to do some kind of routing (OSPF and IS-IS), then the Ethernet device you connect the handoff to has to have such capabilities. Referring to the following Cisco documentation
»www.cisco.com/en/US/prod/collate···e67.html
a Catalyst 3750E support both OSPF and IS-IS. Assuming it is true, then you can simply connect the Ethernet handoff from your telco or ISP to this 3750E switch. In addition, there will be some configuration needed on the switch so the switch can participate in OSPF and IS-IS. |
|
Ayo
join:2003-12-05
Lawrence, KS | OK, so maybe I wasn't clear the application is ISP and the product I'm looking for will be providing the handoff from the T1 coming from the other side. So I do need a product that have physical T1 interface and support the protocol |
|
aryoba
Premium,MVM
join:2002-08-22
3 edits | If the T1 handoff is Ethernet (either copper or fiber), then 3750 will do. If the T1 handoff is non-Ethernet (tradisional T1 off Smartjack) then you need some device (typically a router) with CSU/DSU modem, either external or internal.
What you can do is to confirm with your ISP or telco to find out what kind of handoff they provide. Just because it looks like RJ-45 cable, doesn't necessarily mean it is Ethernet handoff. 
You also need to confirm with them what kind of network topology you deal with. Confirm with them how your network (or your device) participate in OSPF and IS-IS. |
|
djweis
join:2006-04-02
West Des Moines, IA | reply to Ayo
Adtran does make something that is DC powered, 24 ports, and has T1 capability. I think it's a NetVanta 1224. |
|
R000ootr
@csc.com | reply to Ayo
A Catalyst 3750 is a L3 switch and not a router. Hence, you would need a router to change your WAN link T1 to a LAN link Ethernet. Some ISPs do provide you with a small Cisco 1800 Router that is preconfigured for you to plug your 3750. |
|
carp
join:2002-10-30
clubs:
 ·RoadRunner Cable
| reply to djweis
said by djweis :Adtran does make something that is DC powered, 24 ports, and has T1 capability. I think it's a NetVanta 1224. Discontinued. kb.adtran.com |
|
