No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.

Knowledge Base

FAQ-Why Cannot a PPPoE Client Receive RIP Packets from the Firewall

Publication Date:  2015-07-02  |   Views:  826  |   Downloads:  0  |   Document ID:  EKB1000081432


Issue Description

RIP runs between a PPPoE client and the firewall serving as the LNS. The PPPoE client cannot receive RIP packets from the firewall during traffic peak; however, RIP debugging information shows that RIP packets are already sent from the control plane. What is the cause?


RIP packets, as multicast packets, are sent to all dial-up users through a VT interface. If multiple routes exist, multicast or broadcast packets issued to each dial-up user exert adverse impacts on device performance. By default, when the number of dial-up users exceeds 30, the multicast or broadcast packets sent by the firewall are not sent to over an L2TP tunnel. You can run the broadcast-limit link command in the VT interface view to limit the number of multicast or broadcast packets sent per second. The value ranges from 0 to 128.