Scott Herren
Executive Vice President and Chief Financial Officer at Cisco Systems
Thanks, Chuck. We saw solid growth in product orders, net income and earnings per share, despite the challenges, Chuck just outlined.
Product order growth was driven by strength across most of our portfolio, while disciplined spend and supply chain management drove our profitability. Total revenue was $12.8 billion flat year-over-year. Our non-GAAP operating margin was 34.7%, up 110 basis points coming in above the high end of our guidance range. Non-GAAP net income was $3.6 billion up 3% and non-GAAP earnings per share was $0.87, up 5% coming in at the high end of our guidance range.
In March, we stopped business operations in both Russia and Belarus, which had a negative impact to revenue of approximately $200 million or 2 percentage points of growth. Historically Russia, Belarus and Ukraine collectively have represented approximately 1% of our total revenue. The impact this quarter was a bit higher than our historical run rate due to additional charges to revenue we recorded for uncollectable receivables and other items. And as a reminder, Q3 of last year included an extra week, which was a benefit to total revenue in Q3 of '21 of approximately 3 full percentage points of growth. On a combined basis, the impact of the year-over-year total revenue growth rate for the extra week. And the war in Ukraine was approximately 5 percentage points.
Looking at our Q3 revenue in more detail, total product revenue was $9.4 billion, up 3%. Service revenue was $3.4 billion down 8%, driven by the extra week in the prior year and the war in Ukraine, which combined impacted our growth by approximately 8 percentage points. Within product revenue, Secure, Agile Networks was solid with revenues up 4%. Switching grew driven by strength in data center switching with our Nexus 9000 products. Campus switching growth was led by our Catalyst 9000 and Meraki switching offerings. Wireless had a double-digit increase driven by broad-based strength across our portfolio, including our Wi-Fi 6 products and Meraki wireless offerings.
We also had solid growth in servers. Enterprise routing declined, primarily driven by edge and access and slightly offset by strength in SD-WAN. Internet for the Future was up 6% driven by strength Acacia, optical, optics and core networking products, including double digit growth in the Cisco 8000. Collaboration was down 7% driven by declines in our meetings, calling and contact center offerings, partially offset by the continued ramp of our communication platform-as-a-service. End-to-end security group 7% with broad strength across most of the portfolio. Our Zero Trust portfolio performed well with double-digit growth driven by strong performance in our Duo offering. Optimized application experiences was up 8% driven by double-digit growth in both of our SaaS based offerings ThousandEyes and Intersight.
We continue to make progress on our transformation metrics, as we shift our business to more subscriptions and software. Total software revenue was $3.7 billion, a decrease of 3% with the product portion down 1%. Total software revenue growth would've been five points higher excluding the combined negative impact of the extra week in the prior year and the war in Ukraine. 83% of software revenue was subscription based, which is up 1 percentage point year-on-year.
Total subscription revenue was $5.5 billion, a decrease of 4%. Total subscription revenue would've been seven points higher excluding the combined negative impact of the extra week in the prior year and the war in Ukraine. Total subscription revenue represented 43% of Cisco's total revenue. Annualized recurring revenue or ARR was $22.4 billion, an increase of 11% with strong product ARR growth of 18% and remaining performance obligations or RPO was $30.2 billion, up 7%. Product RPO increased 13%. Service RPO increased 3%. And the total short-term RPO grew 9%, the $16.2 billion.
We had solid product order growth in Q3 of 8% with strength across most of the business. Looking at our geographic segments, the Americas was up 9%, EMEA up 4% and APJC up 11%. And our customer markets, commercial was up 19%, service provider was up 8%, public sector was up 4% and enterprise was flat.
From a non-GAAP perspective, total gross margin came in above the high end of our guidance range at 65.3% down 70 basis points year-over-year. Product gross margin was 64.1% down 80 basis points and service gross margin was 68.9% up 20 basis points. The decrease in product gross margin was primarily driven by ongoing higher component costs related to supply constraints as well as higher freight and logistics costs partially offset by strong, positive pricing impact. We continue to manage through the supply constraints, seen industry-wide by us and our peers.
To give a sense of scale of the shortages, we currently see constraints in Q4 on roughly 350 critical components out of a total of 41,000 unique component part numbers. Our supply chain team is aggressively pursuing multiple options to close those shortages. Given our solid product orders, we once again saw a significant increase in our backlog levels for both hardware and software well beyond our normal historical levels.
As Chuck said, our ending product backlog grew to well over $15 billion and software backlog grew to more than $2 billion, both up 10% sequentially. And just a reminder, backlog is not included as part of our $30.2 billion in remaining performance obligations.
We ended Q3 with total cash, cash equivalents and investments of $20.1 billion. Operating cash flow for the quarter was $3.7 billion, down 6% year-over-year, primarily driven by advanced payments to secure future supply. These advanced payments had a negative 9 percentage point year-on-year impact on Q3 operating cash flow.
In terms of capital allocation, we returned $1.8 billion to shareholders during the quarter now is comprised of $1.6 billion for our quarterly cash dividend and approximately $250 million of share repurchases year-to-date. We have returned a total of approximately $10 billion in value to our shareholders via cash dividends and stock repurchases, and we have more than $17 billion available under our Board's stock repurchase authorization.
To summarize, we're navigating the highly complex environment while continuing to make progress on our business model shift and making strategic investments in innovation to capitalize on our significant growth opportunities and expanding addressable markets.
Now let me provide our financial guidance for Q4. In terms of supply, we expect the challenges we experienced in Q3 to continue into Q4. For next quarter, we expect revenue growth to be in the range of minus 1% to minus 5.5%. We anticipate the non-GAAP gross margin to be in the range of 64% to 65%. Our non-GAAP operating margin is expected to be in the range of 31.5% to 33.5% and non-GAAP earnings per share is expected to range from $0.76 to $0.84 cents.
For the full year of fiscal '22, guidance is as follows. We expect revenue growth to be in the range of 2% to 3% year-on-year. Non-GAAP earnings per share guidance is expected to range from $3.29 to $3.37, up 2% to 5% year-on-year. In both our Q4 and full year guidance, we're assuming a non-GAAP effective tax rate of 19%.
I'll now turn it back to Marilyn so we can move into the Q&A.