Troubleshooting Spanning Tree Best Practice. VERSION 1 Introduction Prerequisites Requirements Components Used Configure Network Diagram Configurations Verify Related Information Introduction This document provides a Troubleshooting Spanning Tree Best Practice. for ... (this introduction should provide a description of the subject matter and any contextual information describing a real-world scenario in which this information might be used). Prerequisites Requirements There are no specific requirements for this document. OR Ensure that you meet these requirements before you attempt this configuration: Components Used Configure This section describes the information you need to configure the features described in this document. Network Diagram This document uses this network setup: Configurations This document uses these configurations: Verify Use this section to confirm that your configuration works properly. Related Information
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Have you configured glbp forwarder preempt ? Preempt need to be enabled to achieve the result. glbp forwarder preempt To configure a router to take over as active virtual forwarder (AVF) for a Gateway Load Balancing Protocol (GLBP) group if it has higher priority than the current AVF, use the glbp forwarder preempt command in interface configuration mode. To disable this feature, use the no form of this command. glbp group forwarder preempt [ delay minimum seconds ] no glbp group forwarder preempt [ delay minimum ] Doc here: http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_glbp.html#wp1043971
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Better to use some input acl to make the filter. Change the crypto acl will make the restriction work, but it will possible change the ipsec sa info. Both with, it need to be change at both end of IPSec site. config reference. http://www.cisco.com/en/US/docs/ios/12_3t/12_3t8/feature/guide/gt_crpks.html#wp1065080
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