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Administering TCP/IP
Managing the Internet Protocol (IP)
MAX Administration Guide
7-9
0 reassembly timeouts.
0 reassemblies required.
0 reassemblies that went OK.
0 reassemblies that Failed.
0 packets fragmented OK.
0 fragmentations that failed.
0 fragment packets created.
0 route discards due to lack of memory.
64 default ttl.
To display IP interface address information, enter the Show IP Address command. For
example:
ascend% show ip address
Interface IP Address Dest Address Netmask MTU Status
ie0 10.2.3.4 N/A 255.255.255.224 1500 Up
wan0 0.0.0.0 N/A 0.0.0.0 1500 Down
wan1 13.1.2.0 13.1.2.128 255.255.255.248 1500 Down
wan2 0.0.0.0 N/A 0.0.0.0 1500 Down
wan3 0.0.0.0 N/A 0.0.0.0 1500 Down
lo0 127.0.0.1 N/A 255.255.255.255 1500 Up
rj0 127.0.0.2 N/A 255.255.255.255 1500 Up
bh0 127.0.0.3 N/A 255.255.255.255 1500 Up
RIP updates and IP routes
Routing Information Protocol (RIP) updates can change the metric (number of hops) for the
route. RIP is a distance-vector protocol found in both the IPX and TCP/IP protocol suites. The
protocol keeps a database of routing information that it gathers from periodic broadcasts by
each router on a network. IPX routers broadcast RIP updates periodically and when a WAN
connection is established. The MAX unit receives IPX RIP broadcasts from a remote device,
adds 1 to the hop count of each advertised route, updates its own RIP table, and broadcasts
updated RIP packets on connected networks in a split-horizon fashion which omits routes
learned from one neighbor unit in updates sent to that neighbor unit.
IETF RFC 1058 describes the Routing Information Protocol (RIP), also known as Standard 34
(STD 0034).Routing Information Protocol. RIP is a distance-vector protocol found in both the
NetWare and TCP/IP protocol suites. The protocol keeps a database of routing information that
it gathers from periodic broadcasts by each router on a network.
IPX routers broadcast RIP updates periodically and when a WAN connection is established.
The MAX receives IPX RIP broadcasts from a remote device, adds 1 to the hop count of each
advertised route, updates its own RIP table, and broadcasts updated RIP packets on connected
networks in a split-horizon fashion.
The MAX follows standard IPX RIP behavior for routers when connecting to non-Ascend
units. However, when it connects to another Ascend unit configured for IPX routing, both ends
of the connection immediately exchange their entire RIP tables. In addition, the MAX
maintains those RIP entries as static until the unit is reset or power cycled.
The MAX recognizes network number -2 (0xFFFFFFFE) as the IPX RIP default route. When
it receives a packet for an unknown destination, the MAX forwards the packet to the IPX
router advertising the default route. If more than one IPX router is advertising the default route,