* Discount code BOOKSGIVING confers a 40% discount off the list price of one, or a 55% discount off the list price of two or more eligible print books or eBooks purchased on ciscopress.com in a single transaction. Apply code during checkout to receive savings. Discount not valid on Book + eBook "Best Value" or "Additional Savings" bundles, Book/eBook + Video bundles, video training, software, non-discountable products, Rough Cuts, Safari Books Online/O'Reilly Online Learning, or any title featured as eBook Deal of the Week. Libraries and boxed sets count as a single item. Discount code may not be combined with any other offer and is not redeemable for cash. If any items are canceled or returned, and the order is no longer eligible for a volume-based discount code that was applied to the purchase, remaining items will be invoiced at the standard discounted price shown on the website. Discount offer expires 11:59 p.m. EST November 30, 2022. Offer subject to change. Release dates subject to change.