status-im
/
eth2.0-specs
mirror of https://github.com/status-im/eth2.0-specs.git
2
0
Fork 0
Code Issues Projects Releases Wiki Activity

Maintain subnet subscriptions per node 

fixes https://github.com/ethereum/eth2.0-specs/issues/2153
This commit is contained in:
Jacek Sieka 2020-12-16 14:40:24 +01:00
parent 99934ee16c
commit 76610b8554
No known key found for this signature in database
GPG Key ID: A1B09461ABB656B8
3 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
configs/mainnet/phase0.yaml
View File

@ -41,7 +41,7 @@ ETH1_FOLLOW_DISTANCE: 2048
# 2**4 (= 16)
TARGET_AGGREGATORS_PER_COMMITTEE: 16
# 2**0 (= 1)
RANDOM_SUBNETS_PER_VALIDATOR: 1
RANDOM_SUBNETS_PER_NODE: 1
# 2**8 (= 256)
EPOCHS_PER_RANDOM_SUBNET_SUBSCRIPTION: 256
# 14 (estimate from Eth1 mainnet)

2
configs/minimal/phase0.yaml
View File

@ -42,7 +42,7 @@ ETH1_FOLLOW_DISTANCE: 16
# 2**4 (= 16)
TARGET_AGGREGATORS_PER_COMMITTEE: 16
# 2**0 (= 1)
RANDOM_SUBNETS_PER_VALIDATOR: 1
RANDOM_SUBNETS_PER_NODE: 1
# 2**8 (= 256)
EPOCHS_PER_RANDOM_SUBNET_SUBSCRIPTION: 256
# 14 (estimate from Eth1 mainnet)

6
specs/phase0/validator.md
View File

@ -86,7 +86,7 @@ All terminology, constants, functions, and protocol mechanics defined in the [Ph
| Name | Value | Unit | Duration |
| - | - | :-: | :-: |
| `TARGET_AGGREGATORS_PER_COMMITTEE` | `2**4` (= 16) | validators | |
| `RANDOM_SUBNETS_PER_VALIDATOR` | `2**0` (= 1) | subnets | |
| `RANDOM_SUBNETS_PER_NODE` | `2**0` (= 1) | subnets | |
| `EPOCHS_PER_RANDOM_SUBNET_SUBSCRIPTION` | `2**8` (= 256) | epochs | ~27 hours |
| `ATTESTATION_SUBNET_COUNT` | `64` | The number of attestation subnets used in the gossipsub protocol. |
@ -569,9 +569,9 @@ class SignedAggregateAndProof(Container):
## Phase 0 attestation subnet stability
Because Phase 0 does not have shards and thus does not have Shard Committees, there is no stable backbone to the attestation subnets (`beacon_attestation_{subnet_id}`). To provide this stability, each validator must:
Because Phase 0 does not have shards and thus does not have Shard Committees, there is no stable backbone to the attestation subnets (`beacon_attestation_{subnet_id}`). To provide this stability, each node must, regardless of the number of validators it's serving:
* Randomly select and remain subscribed to `RANDOM_SUBNETS_PER_VALIDATOR` attestation subnets
* Randomly select and remain subscribed to at least `RANDOM_SUBNETS_PER_NODE` attestation subnets
* Maintain advertisement of the randomly selected subnets in their node's ENR `attnets` entry by setting the randomly selected `subnet_id` bits to `True` (e.g. `ENR["attnets"][subnet_id] = True`) for all persistent attestation subnets
* Set the lifetime of each random subscription to a random number of epochs between `EPOCHS_PER_RANDOM_SUBNET_SUBSCRIPTION` and `2 * EPOCHS_PER_RANDOM_SUBNET_SUBSCRIPTION]`. At the end of life for a subscription, select a new random subnet, update subnet subscriptions, and publish an updated ENR