Quanta Cloud Technology QuantaMesh QNOS5, Configuration Manual

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You can create static ARP entries and manage many settings for the dynamic ARP table, such as age time
for entries, retries, and cache size.
1.5.7. BOOTP/DHCP Relay Agent
The switch BOOTP/DHCP Relay Agent feature relays BOOTP and DHCP messages between DHCP clients and
DHCP servers that are located in different IP subnets.
1.5.8. IP Helper and UDP Relay
The IP Helper and UDP Relay features provide the ability to relay various protocols to servers on a different
subnet.
1.5.9. Routing Table
The routing table displays information about the routes that have been dynamically learned. You can
configure static and default routes and route preferences. A separate table shows the routes that have
been manually configured.
1.5.10. Virtual Router Redundancy Protocol (VRRP)
VRRP provides hosts with redundant routers in the network topology without any need for the hosts to
reconfigure or know that there are multiple routers. If the primary (master) router fails, a secondary router
assumes control and continues to use the virtual router IP (VRIP) address.
VRRP Route Interface Tracking extends the capability of VRRP to allow tracking of specific route/interface IP
states within the router that can alter the priority level of a virtual router for a VRRP group.
1.5.11. Algorithmic Longest Prefex Match (ALPM)
ALPM is a protocol used by routers to select an entry from a forwarding table. When an exact match is not
found in the forwarding table, the match with the longest subnet mask, also called longest prefix match, is
chosen. It is called the longest prefix match because it is also the entry where the largest number of leading
address bits of the destination address match those in the table entry.
ALPM is primarily a switch silicon feature and the algorithm for this is implemented in the SDK on the chip.
ALPM enables supporting for large number of routes (for BGP, 32k IPv4 routes and 24k IPv6 are supported).
Support for ALPM is platform-dependent. For platforms that support ALPM, two SDM templates, “dual-
ipv4-and- ipv6 alpm-data-center” and “dual-ipv4-and-ipv6 alpm-mpls-data-center”, are made available to
accommodate the larger number of routes.
1.5.12. Bidirectional Forwarding Detection
Bidirectional Forwarding Detection (BFD) is presented as a service to its user applications, providing the
options to create and destroy a session with a peer device and reporting upon the session status. On