plz let me know if any of you..have experienced the same problem......experts : plz comment....your recommendations...
Actual Problem : If only either one of Core1 or Core2 is lets assume Core2 forming VPC with N5k switches and Core 1 is not connected to N5k
for VPC connectvitiy then i dont face any STP loop/HSRP L3 interface flapping issue , Howerver as soon as i connect Core1 to N5k using VPC method then after couple of hours the vlans which are allowe to pass through trunk of N5k ( vlan2,11,15,222-227) are Flapping in HSRP in Core1 switch.
6509 core1 ------allowed valn 2,11,15,222-227 in portchannel2 --- Nexus side trunk same vlans allowed
6509 core2 ------allowed valn 2,11,15,222-227 in portchannel3 --- Nexus side trunk same vlans allowed
In HA site we have single N5010 switch and hence no VPC only ether-channel is being used , but I am sure this issue not triggering from HA site.
DMVPN (Dynamic Multipoint VPN) Introduced by Cisco in late 2000 is a routing technology you can use to build a VPN network with multiple sites (spokes) without having to statically configure all devices. It’s a “hub and spoke” network, where the spok...
On 24th August 2021, Cisco announced the latest IOS XE release - Cisco IOS XE Bengaluru 17.6.1a
IOS XE 17.6.1a unlocks various routing features and enhancements comprehensively covering different technology segments such as voice, security,...
DMVPN (Dynamic Multipoint VPN) Introduced by Cisco in late 2000 is a routing technology you can use to build a VPN network with multiple sites (spokes) without having to statically configure all devices. It’s a “hub and spoke” network, where th...
SummaryRequirementsConfiguration StepsVerificationFAQTroubleshootingReferences & Tools
In the past when IOS 12.x was hot stuff we used MD5 to authenticate OSPF neighbors. This worked great on ethernet networks because OSPF is a m...
Chapter 1 – Pre-requisite
You have Root or Super Users access privileges of Cisco Prime Infrastructure.
You have access credentials of Cisco DNA Center.
You use Cisco Prime Infrastructure version 3.5 and above which is compatible with Cisco DNA Center v...