nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

ISP doing circuit maintenance

dppagc

I am curious about something.
Let say that a certain maintenance has to be done on a particular PE.
1 customer rejects the maintenance but another accepts it.
What happens?

Find more posts tagged with

SAVE $250 on Your Boot Camp — Use Code "EXAM26"

Exclusively for TechExams members for Infosec Boot Camps starting before April 30, 2026

View Boot Camps

Comments

networker050184

Depends how much that customer pays!

clarson

if your asking the customer then you have to go by what the answer is.
if the customer doesn't have a choice, why are they being asked.

dppagc

Does it mean it is a no choice situation for the customer if he is low priority?

clarson

if they have no choice, you notify them and they work around you.
if they have a choice, you ask and you work around them.

it all depends on service contracts, sla's, etc. The key is the terminology that you used. In the situation you described, a customer rejected the maintenance. the question is does the customer have to right to stop the maintenance. During business hours, probably so. During a maintenance window, probably not.

dppagc

What if it straddles between 2 sites with different time zones?

negru_tudor

dppagc wrote: »

What if it straddles between 2 sites with different time zones?

Look, this has nothing to do with CCNP topics. You might be better of posting in the Off-topic forums; could get a faster response over there. What you're asking now is all down to company politics and rubbing customers the right/wrong way.

Might be better to give all customers tied to that PE device a notice that maintenance HAS to happen and instead of asking them if they're ok with it, give them 2 or 3 options (dates) to pick from. This way you'd be giving them notice and somewhat allowing them to have a say in it. Making them agree on the same date, well that's the account manager's task.

Mooseboost

negru_tudor is right - you may get better responses in the off-topic thread, since this doesn't relate to the CCNP exams.

That being said - there are a lot of factors that come into play such as SLAs, expected downtime, etc. If an ISP has to perform maintenance (firmware updates, card swaps, etc) on their side, then there can only be so much delay from a customer factored in. The ISP I worked for calculated the best time overall to perform the changes and then sent out a maintenance notification, we didn't ask permission. A lot of SLAs have exceptions noted in them for carrier side maintenance.

henrybroadway

This depends mainly on whether the infrastructure is shared under an SLA or sits under customer-controlled premises. In ISP circuit maintenance, individual rejection usually does not override scheduled work if the equipment is provider-owned or part of a critical network upgrade. The ISP will typically proceed during a maintenance window, especially if the work affects overall stability, redundancy, or compliance requirements. However, if the maintenance is localized and only impacts one customer, consent and scheduling flexibility become more important.

In real-world coordination scenarios, technicians and planners also rely on clear communication and escalation procedures to avoid unnecessary service disruption. A practical reference point for understanding how field electrical coordination works can be seen in Electrician Singapore(https://www.electriciansingapore.org) where safety, access, and planned outages are often balanced with customer needs and site constraints.

For example, in a shared office building fiber circuit, one tenant may reject downtime due to business hours, but if the maintenance involves a backbone switch or riser cable affecting multiple units, the ISP may still proceed after notice and reroute traffic through redundancy systems where available.

Ultimately, SLA terms and safety priorities decide how conflicts between customers are resolved in such cases across most ISP networks globally.