Hi,
I created two bridges on the same appliance for two different VPN’s from two different software brokers for two different VPN’s, I haven’t mentioned client username in both the bridges. And I observed that one of the bridge is using #client-username and the other is using default.
There are no configuration changes as well between two bridges,
Can some one help me understand when #**client-username **will be used and when default.
Interesting question @rayudu. I haven’t noticed this before but I don’t get to use appliances super often anymore 
I’ve reached out internally to get more info.
I Created a new bridge again today. The same thing is happening it is using the default client username in the message VPN on the source side. Can someone help me understand why
Hi @rayudu , in order to create a bridge between message VPNs, PubSub+ requires a username to be specified. By default all message VPNs come with two pre-configured client usernames, “default” and “#client-username”. In a uni-directional bridge configuration the remote side of the bridge will use the specified username, in this case “default”, to authenticate and the local side will always show “#client-username” instead of the remote username. The “default” username can be used by messaging clients and can be edited while the “#client-username” username is automatically configured, cannot be edited, and used for internal client only. For more information on bridges see: https://docs.solace.com/Overviews/Message-VPN-Bridges-Overview.htm