Hi Sarah, VLAN 1 is the default VLAN on all the uplinks, and it's also the default native VLAN for the uplink interface(s)/port-channel(s). It will be present on all the uplinks regardless of disjoint-l2 configuration. VLAN 1 is also used for LACPDU exchange in some systems, so it can't be removed from any of the uplink interfaces, however you can remove it from upstream switch trunk. Walter brings a good point, running production traffic on VLAN 1 (specially in disjoint-l2 environment) is not a good idea. Only one of the uplinks gets selected as the Designated Receiver for each VLAN, not since VLAN 1 is present on both uplinks, it will only select one of the uplinks at random and your broadcast/multicast traffic might not work as expected. Please note that ARP might not work in that case. That's why it's not recommended to use VLAN 1 for production traffic, specially in disjoint-L2 environment. Please refer to the note in this white paper: http://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/unified-computing/white_paper_c11-692008.html (Screenshot below) Hope that helps. Thanks! Gunjan
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That's a duplicate bug. Basically, use of "clear ip http client cache all" is not recommended. What it does is it refreshes all the entries from the cache, and what happens is it creates and deletes nodes from the cache linked-list which causes some problems. The command is in process of being removed from IOS. The recommended command is "set http client cache stale", what this command does is it just refreshes the newly changed part of the cache. Try that command instead, and let me know if it works. Thanks, Gunjan
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