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Routing Protocol Maximums
Table 4 lists routing protocol maximums for the ERX routers. The following notes
are referred to in Table 4:
1. The total set of FTEs can be shared by interfaces, next hops, ECMP sets, VRs,
and VRFs. Next-hop FTEs identify the next hop on multiaccess media, such as
ATM multipoint, Ethernet, or bridged Ethernet. Each VR or VRF consumes three
entries. Each interface, next hop, and ECMP set consumes a single entry. One
FTE is reserved for internal use, and the system software limits the number of
FTEs used by interfaces to a maximum of 32,000. The remaining FTEs can be
shared across the other types.
2. The ERX1440 router supports a maximum of 48,000 interfaces of all types
combined. You can use either all dynamic interfaces or a combination of
dynamic and static interfaces to achieve this maximum. The ERX1440 router
supports a maximum of 32,000 static PPP/PPPoE interfaces and a maximum of
36,500 static IP network interfaces. Bridged Ethernet does not enforce a limit
so IP interfaces created on Bridged Ethernet can scale to the IP maximum of
36,500.
The ERX705, ERX710, and ERX1410 routers support a maximum of 32,000 IP
network interfaces; the ERX310 router supports a maximum of 16,000 IP
network interfaces. For all these models, the interfaces can be any combination
of dynamic or static.
3. These values are subject to limitations on available SRP module memory, which
varies according to your router configuration.
4. Depending on your configuration, the router may support more routing table
entries or fewer routing table entries than this value. In any case, you can
choose to limit the number of routes that can be added to the routing table on a
per-VR or per-VRF basis by means of the maximum routes command.
5. The maximum number of ANCP adjacencies can be scaled over a maximum of
100 virtual routers. Fewer ANCP adjacencies can be scaled in configurations
with more than 100 virtual routers.
6. This maximum is not valid for Frame Relay. The Frame Relay maximum is
1000 circuits over MPLS per line module, because only 1000 Frame Relay DLCIs
are permitted per line module.
7. On the ERX1440 router, you can achieve 32,767 total Martini circuits over ATM
or Ethernet interfaces. For all routers, the total Martini can be any combination
of external inter-router circuits and internal circuits (local cross-connects).
8. There is no per-VR limit; all multicast routes can be on a single VR or present
across multiple VRs.
9. The maximum number of interfaces can be achieved by any combination; for
example, two streams each being replicated to 32,768 interfaces; 16,384
streams each being replicated four times; or any other combination.
Appendix A: System Maximums
ERX310, ERX7xx, and ERX14xx System Maximums
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