# Cosmos sdk network connection issue **URL:** \ **Category:** Cosmos-SDK\ **Created:** [December 7, 2021, 8:54am UTC](https://forum.cosmos.network/t/cosmos-sdk-network-connection-issue/5540 "2021-12-07T08:54:26Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Donggeon\_Lee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.cosmos.network/donggeon_lee/32/1901_2.png) [@Donggeon\_Lee](https://forum.cosmos.network/u/Donggeon_Lee)\ **Post date:** [December 7, 2021, 8:54am UTC](https://forum.cosmos.network/t/cosmos-sdk-network-connection-issue/5540/1 "2021-12-07T08:54:26Z")
I want to add new node to the blockchain network based on cosmos sdk, I have genesis.json and config.toml. And update moniker. Then running it. But I just get this messages. Error reconnecting to peer. Trying again addr= dialing failed (attempts: 7): auth failure: conn.ID What do I miss? ---
**Author:** ![uditvira](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.cosmos.network/uditvira/32/1907_2.png) [@uditvira](https://forum.cosmos.network/u/uditvira)\ **Post date:** [December 7, 2021, 10:03pm UTC](https://forum.cosmos.network/t/cosmos-sdk-network-connection-issue/5540/2 "2021-12-07T22:03:27Z")
Sounds like you need to add peers to your config.toml file If you have further questions, you could ask in [Cosmos Developers](https://discord.gg/cosmosnetwork) ---
**Author:** ![Donggeon\_Lee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.cosmos.network/donggeon_lee/32/1901_2.png) [@Donggeon\_Lee](https://forum.cosmos.network/u/Donggeon_Lee)\ **Post date:** [December 8, 2021, 3:41am UTC](https://forum.cosmos.network/t/cosmos-sdk-network-connection-issue/5540/3 "2021-12-08T03:41:24Z")
Thank you for your reply. Then I guess it is related to persistent\_peers in config.toml. The persistent peers format is hash number@domain. How do I generate hash number for the domain peer?