Feature Requirements |
Series |
Models |
|---|---|---|
In an upgrade scenario where RUI inter-chassis borrowing is configured, the device with a RUI-slave address pool deployed runs a new version, whereas the device with a local address pool deployed runs an old version. When a PPPoEv4 user requests to go online from the device with a RUI-slave address pool deployed, the device fails to identify the user for whom the NAK message is intended. If the NAK message indicates that there is no available address in the local address pool, a failure in identifying the receiver of the NAK message will reduce the login success rate. If a DHCPv4 or PPPoEV4 user with the same MAC address as the preceding PPPoEv4 user requests to go online or renew the lease from a remote address pool, the two types of users may fail to go online or renew the lease. |
NetEngine 8000 F |
NetEngine 8000 F1A |
If DHCPv4 and PPPoEv4 users with the same MAC address go online from a remote address pool at the same time, the DHCP server may incorrectly distribute response packets to users, causing user login failures. - If a PPPoEv4 user requests to go online when a DHCPv4 user is waiting for a response from the DHCPv4 server, the server may send the response for the DHCPv4 user to the PPPoEv4 user. As a result, both users fail to go online. - If a DHCPv4 user requests to go online when a PPPoEv4 user is waiting for a response from the DHCPv4 server, the server may send the response for the PPPoEv4 user to the DHCPv4 user. As a result, both users fail to go online. - If the first user has successfully gone online and the remote server can distinguish between the DHCPv4 user and the PPPoE user during address allocation, the second user can go online successfully. You are advised to deploy a local address pool and a remote address pool or two local address pools for DHCP and PPPoE users with the same MAC address. |
NetEngine 8000 F |
NetEngine 8000 F1A |
If a client goes offline unexpectedly and one of the following occurs: a master/backup device switchover is performed in RUI or disaster recovery scenarios, the master trunk processing board fails, or an active/standby main control board switchover is performed, the BRAS doubles the user's original lease at most. The user on the BRAS goes offline after one more lease. |
NetEngine 8000 F |
NetEngine 8000 F1A |
When the address pool routes with the same destination IP address and mask of multiple source VPNs are imported to the same destination VPN, the address pool routes of the first source VPN take effect and the address pool routes of other source VPNs are discarded. You are advised to properly plan the leaking of address pool routes. Otherwise, the VPN-based leaking of address pool routes is affected. |
NetEngine 8000 F |
NetEngine 8000 F1A |
In one-to-many mapping between one MAC address and multiple sessions, the system reserves addresses based on user MAC addresses, access interfaces, and VLANs within the address reservation period. If the access interface or VLAN information of the user changes when the user goes online again, the user cannot use the reserved address for the last login. |
NetEngine 8000 F |
NetEngine 8000 F1A |
Among the physical interfaces, 40GE interfaces (40GE x/x/x or 40GE x/x/x/x) do not support BRAS access. |
NetEngine 8000 F |
NetEngine 8000 F1A |