About Jeongjun Park

Jeongjun Park · 11-12-2025

IntroductionSNS (Secure Network Server) ApplianceHardwareInstallation GuideUpdateEnd of Sale & End of SupportLicenseCharacteristicsCisco ISE CompatibilityParticularitiesVM (Virtual Machine)LicenseParticularitiesCloneCreate a VM TemplateDeploy a VM T...

Jeongjun Park · 08-01-2025

IntroductionNSLookupConfigurationIP Name-ServerIP Domain-NamePAN Automatic FailoverFlowDNS CacheFQDN This is the Korean translation of the Article below. We (@Marcelo Morais and @Jeongjun Park) would like to share this knowledge with Members of t...

Jeongjun Park · 05-20-2025

Hi, Guys. Good day. My customer is having a poor speed slow via SD-WAN recently. Its been 2 years since I deployed SD-WAN for them. It occurs in their some branches in the randomly. It maintains 10~20 mins, and recovers automatically. Branches ...

Jeongjun Park · 02-12-2025

Hello. I have a question about vManage. Q1. Whenever I work something on the vManage, It suddenly logout. little bit annoy (especially when I create feature templates) https://[vmanage]/logout?nocache=1739340960376&reason=sessiontimeout * En...

Jeongjun Park · 01-07-2025

Hello, All. Just simple question. Q1. Can I configure fully specified static route via vManage Feature Template ? Ex) ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/0 10.0.0.2 Thank you.

Jeongjun Park · 01-14-2026

I’m truly honored and grateful to be selected as a Cisco Community VIP again!Congratulations to all the other VIPs as well — it’s inspiring to be recognized alongside such knowledgeable and passionate community members Thank you to everyone who cons...

Jeongjun Park · 12-29-2025

Hi. Many clients use this architecture. You can achieve it. Please check this sample configuration. Device(config)# sdwan interface Loopback1 Device (config-interface-Loopback1)# tunnel-interface Device (config-tunnel-interface)# encap ipsec Device...

Jeongjun Park · 10-29-2025

Hello. 1. It is impossible to change only device model of device template. Create new one for 8200 and assemble feature templates. 2. You can migrate all feature templates with Sastre automation tool. Please check this URL. Thank you. Please remark...

Jeongjun Park · 10-28-2025

Hello. I couldnt find any documents about the latency for DR. As you saw, Cluster needs <4ms latency. Perhaps, 25-30 ms wont be matter If link is stable. The DR replication will be successful. Try to open the case If you need. Thank you.

Jeongjun Park · 10-22-2025

@Mark Elsen Huge Congratulations! I will do my best like you as well!

Member Since	‎06-30-2023 01:15 PM
Date Last Visited	‎01-14-2026 04:33 PM
Posts	126
Total Helpful Votes Received	57

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ISE - SNS / VM 에 대해서 알아야 할 것들

ISE - DNS 서버에 대해서 알아야 할 것들

SD-WAN cEdge speed slow sometimes

vManage GUI session is not stable

Fully specified static route via vManage Feature Template

RE: Welcoming and celebrating the VIP Class of 2026!

RE: How to Form SD-WAN Tunnels Using Multiple Loopbacks with Different

RE: cisco sdwan branch routers migration from 4321 to 8200 series

RE: SD-WAN Active-Standby Cluster Disaster Recovery Latency Requiremen

RE: Meet Mark Elsen – VIP and 2025 Hall of Fame Recipient