User`s guide

Configuring IP Routing
Introduction to IP routing and interfaces
MultiVoice Gateway for the MAX— User’s Guide Preliminary November 23, 1998 8-5
the metric fields and uses the route with the lowest metric. Following are the preference values
for the various types of routes:
MultiVoice Gateway Ethernet interface
The following example shows the routing table for a MultiVoice Gateway configured to enable
IP routing:
** Ascend MultiVoice Gateway Terminal Server **
ascend% iproute show
Destination Gateway IF Flg Pref Met Use Age
10.10.0.0/16 - ie0 C 0 0 3 222
10.10.10.2/32 - local CP 0 0 0 222
127.0.0.0/8 - bh0 CP 0 0 0 222
127.0.0.1/32 - local CP 0 0 0 222
127.0.0.2/32 - rj0 CP 0 0 0 222
224.0.0.0/4 - mcast CP 0 0 0 222
224.0.0.1/32 - local CP 0 0 0 222
224.0.0.2/32 - local CP 0 0 0 222
224.0.0.5/32 - local CP 0 0 0 222
224.0.0.6/32 - local CP 0 0 0 222
224.0.0.9/32 - local CP 0 0 0 222
255.255.255.255/32 - ie0 CP 0 0 0 222
The Ethernet interface has the IP address 10.10.10.2 (with a subnet mask of 255.255.0.0). No
Connection profiles or static routes are configured.
The MultiVoice Gateway creates the following interfaces at start-up:
Route Default Preference
OSPF 10
ICMP redirects 30
RIP 100
Static 100
ATMP, PPTP 100
Interface Description
Ethernet IP Always active, because it is always connected. Its IP address is
assigned in Ethernet > Mod Config > Ether Options.
The MultiVoice Gateway creates two routing table entries: one with a
destination of the network (ie0), and the other with a destination of
the MultiVoice Gateway (local).
Black-hole (bh0) Always up. The black-hole address is 127.0.0.3. Packets routed to this
interface are discarded silently.
Loopback (local) Always up. The loopback address is 127.0.0.1/32.
Reject (rj0) Always up. The reject address is 127.0.0.2. Packets routed to this
interface are sent back to the source address with an ICMP host
unreachable message.