Optics and Optical Networking

Hello,I have a fast ethernet FX connection running over a Nortel Optera 5200 which is showing packet loss.I have a 7500 at one end and a 7200 at the other, both have NM-FE-FX PA's installed. We have a multimode fibre connection from the routers to a ...

Hi All,My first attempt at a post here, it's a bit long winded but I'll try and keep it brief.I have to design a complete new national network for my client. The existing network is to be totally replaced, the base volumes are 180,000 LAN Ports, 300,...

What is the best way to take advantage of a new fiber ring backbone installed within company. I want to add two divisions to our network now and would like to plan for the future, not just bring them in and use regular 10mb ethernet since we have th...

How long it takes for BXM-155(OC3) line to detect alarm such as LOS, Path AIS, and Path Yellow? If BXM line is a trunk, how can I protect connections from rerouting during APS time?

Hi there,I have two Catalyst 6500 switch with sup2/msfc2 with IOS 12.1.20E Enterprise W/VIP and a PA-POS-OC3SMI card on a FlexWAN module.We have two sites which are connected over OC3-SONET. Both sites have multiple VLANs and inter-VLAN routing.Is th...

Hi!Have a question on reusable channel in DWDM network. For example, let consider 3 dwdm node A B C which are corrected in a ring manner in unprotected configuration . In this case let use ONS 15540 ESPx with unprotected LCMB and TSP configuration. I...

Hi!Can anybody tell me whether IPV6 have been supported on IOS release for ONS 15540 ESPx. I know this sound kinda funny as ONS happen to be a Layer 1 optical transport but my customer wants to know. Have tried to find out via feature navigator on CC...

I'm currently looking out for the ONS 15540 specific training and found out that cisco does offer it under network deployment mentoring. Have send query to the site via email provided on the page but so far no response. Have anobody on this particula...

We need a media converter which should convert 1000 Mbps (TP-RJ45) to 1000 Mbps SX (Multi-mode Fiber) The length of the Fiber cable is 1 (One) Kilometer. Fiber Cable Type: 6 Core, 62.5/125µmConnector Type: MM SC connectorsis there any type of media c...

Looking for specifics on exactly what issues would arise when you find a singlemode fibe connected to an multimode SX GBIC.Anything more than a larger loss than what would happen when a 50 micron and 62.5 micron cables are connected together?

Hi,I read that the CTM can only provision circuits on a 'contiguous DCC domain'. Can a DCC domain span multiple rings?cheers,Andrew

I have an ONS15540 running with several applications on it. One of them is ESCON with a 15500-XVRA-01A2 module. My link between the two systmes is close to 85 Km.As the IBM manager configures the ESCON application, he only can travel on one sense (A ...

The dwdm design I'm working with calls for several EDFA's but I dont need the default 23 db gain I only want 10 according to my optical budget. What is the best way to accomplish this?Thanks in advanceMark

Hi!Got a question on splitter protection mechanisims on ONS 15540 ESPX. I understand that to implement this kind of protection requires a transponder module to be connected to a splitter base LCMB which then connect to the OADM of the same channel/ba...

Have anyone tryed to organize a VC4-4c link between Cisco routers using SDH network?Are there any hidden dangers, things to be check etc.? Any link for an intro?