BINTEC-IPEXT-MIB Table View

The ipExtIfTable contains extended information related to
IP and the interfaces found on the system. Entries can only
be added or deleted by the system.

The ipExtRtTable can be used in addition (not instead of)
to the ipRouteTable to specify routing of IP datagrams. 
The selection of datagram-types is more specific with
the ipExtRtTable, so routing of different services over
different pathes is possible. The specification of local 
IP-addresses is not possible in the ipExtRtTable.
          
The ipExtRtTable will be searched before the ipRouteTable.
If a matching entry is found, it will be taken for routing
and no further lookup in the ipRouteTable will happen.

If NAT is switched on for an interface, this table contains
an entry for each session running over the interface. Table
entries are creates by the system whenever a valid session
is established. A session may be either a tcp connection,
a udp connection or an icmp connection with icmp-echo messages
(ping). A valid session is either an outgoing session or
an incoming session specified in the ipNatPresetTable.
          
Everything behind an interface with NAT enabled is called
outside. The BRICK itself and all networks connected
to it via interfaces without NAT are called inside.
          
Table entries are removed after timeout. This timeout
is
	specified by ipExtIfNatOtherTimeout for UDP
	and ICMP sessions.
          
	specified by ipExtIfTcpTimeout for TCP sessions
          
	16 seconds for closed TCP-sessions (FIN has been
	received and acknowledged in both directions).

This table specifies the IP addresses and port numbers
for sessions requested from outside. If this table is
empty and NAT is enabled, only packets for sessions
initiated from inside are forwarded.
          
The IP address and the port number of the internal server
can be specified individually for each combination of
          
	- protocol (udp/tcp/icmp)
	- initiating hosts IP address (RemoteAddr, RemoteMask)
	- destination address or network (ExtAddr, ExtMask)
	- destination port number or range (ExtPort, ExtPortRange)
          
Entries in the table are created and removed manually
by network management.

.

This table specifies how routes from one routing protocol
are imported into another routing protocol. The dummy
protocol default-route allows the generation of a default
route for the routing domain. Not all combinations of 
source and destination protocols might be valid or 
implemented.

This table defines the order, in which routes from different
protocols are being used to determine the destination of an
ip packet. The table will contain an entry for each type
of routing protocol including STATIC and DIRECT routes.
A priority-value can be configured for each of those protocols
to get an order between the different protocols. The table
contains a fixed number of entries. Only the priority may be
configured.

The ipFilterTable defines filters that describe subsets
of IP packets. The filter matches if all conditions defined
are true when comparing with the header of an IP packet.

The ipRuleTable defines access rules for checking incoming
IP packets. The rules are processed in order, i.e. each rule
has a link to the next rule. The set of rules is processed
until a match occurs, that means the rule's associated filter 
matches and the specified action is performed (either accept
or deny a packet). The last rule is implicitly a deny rule.
The set of rules to be processed can be defined for each
interface

This table specifies the IP address translation for
outgoing sessions. If no matching entry is found the
IP address is set to the IP address defined on the
interface configured for NAT. If a matching entry is
found, the source IP address of outgoing IP packets
is translated according to the couple 'ipNatOutExtAddr /
ipNatOutExtMask'.
          
	- If external IP address is a 'host IP address', the
	  whole source IP address is mapped.
	- If external IP address is a 'net IP address', only
	  the 'net part' of source IP address is affected.
	  This table is only used if the outgoing address 
translation is activated (ipExtIfNatOutXlat).
          
Entries in the table are created and removed manually
by network management.

This table specifies the watched IP addresses.
          
Entries in the table are created and removed manually
by network management.

The ipBodRuleTable defines access rules for checking incoming
IP packets. The rules are processed in order, i.e. each rule
has a link to the next rule. The set of rules is processed
until a match occurs, that means the rule's associated filter 
matches and the specified action is performed (either request
or deny additional bandwidth). The last rule is implicitly a
deny rule. The set of rules to be processed can be defined
for each interface.

The ipQosTable defines the classifier rules that are applied
to IP traffic arriving this interface in a particular
direction. The rules are processed in order, i.e. each rule
has a link to the next rule. The set of rules is processed
until a match occurs, that means the rule's associated filter
matches and the specified action is performed (alter the IP
headers TOS field, alter associated level 2 priority, specify 
a service class for QoS). The set of these rules to be 
processed can be defined for each interface.

The 'ipRipTimerTable' contains the basic configuration
of the RIP protocol. Formerly created to define only
the 3 timers involved in RIP process (cf RFC 2453).
          
This set of timers is unique for the router. Values
should be the same on all the routers of the whole network.

The ipRipFilterTable contains additional information related
to IP and the interfaces found on the system. Entries can only
be added or deleted by the system.

If NAT is switched on for an interface, this table contains
entries for expected sessions. Table entries are creates by 
the system whenever there is a need for a new incoming session.
Table entries are removed after timeout or if the expected
session is established.

Entries in the Multicast Forwarding Table define a rule
where to forward packets with a specified multicast group address
to a dedicated destination interface.

.

This table specifies the IP addresses and port numbers 
for sessions that must not be processed by NAT.		 
          
Entries in the table are created and removed manually
by network management.

This table displays all currently active IP address translation
policies in 'outgoing' direction. It's similar to the former
defined ipNatOutTable.
Table entries are created:
- either by the IP subsystem itself due to the
  administratively-defined ipNatOutTable entries
  (ipNatOutOperType_permanent(1))
- or by several subsystems whenever there is a need for such
  non-static NAT policies (ipNatOutOperType_temporary(2))
          
Table entries are deleted:
- either by the IP subsystem itself due to the
  administratively-defined ipNatOutTable entries
  (ipNatOutOperType_permanent(1))
- or by several subsystems whenever there is a need for such
  non-static NAT policies (ipNatOutOperType_temporary(2))
- or, in case of non-permanent entries, by the administrator
          
If no matching entry is found (neither in the IP address is
set to the IP address defined on the interface configured for
NAT. If a matching entry is found, the source IP address of
outgoing IP packets is translated according to the couple
'ipNatOutOperExtAddr /ipNatOutOperExtMask'.
          
- If external IP address is a 'host IP address', the
 whole source IP address is mapped.
- If external IP address is a 'net IP address', only
 the 'net part' of source IP address is affected.
This table is only used if the outgoing address
translation is activated (ipExtIfNatOutXlat).

This table specifies the IP addresses and port numbers
for sessions requested from outside. If this table is
empty and NAT is enabled, only packets for sessions
initiated from inside are forwarded.
It's similar to the former defined ipNatPresetTable.
          
The IP address and the port number of the internal server
can be specified individually for each combination of
- protocol (udp/tcp/icmp)
- initiating hosts IP address (RemoteAddr, RemoteMask)
- destination address or network (ExtAddr, ExtMask)
- destination port number or range (ExtPort, ExtPortRange)
          
Entries in the table are created:
- either by the IP subsystem itself due to the
   administratively-defined ipNatPresetTable entries
  (ipNatPresetOperType_permanent(1))
- or by several subsystems whenever there is a need for such
 non-static NAT policies (ipNatPresetOperType_temporary(2))
          
Entries are deleted:
- either by the IP subsystem itself due to the
  administratively-defined ipNatPresetTable entries
  (ipNatPresetOperType_permanent(1))
- or by several subsystems whenever there is a need for such
  non-static NAT policies (ipNatPresetOperType_temporary(2))
- or, in case of non-permanent entries, by the administrator.

The ipWolRuleTable defines access rules for checking incoming
IP packets. The rules are processed in order, i.e. each rule
has a link to the next rule. The set of rules is processed
until a match occurs, that means the rule's associated filter 
matches and the specified action is performed (either send a 
Wake-On-LAN packet via Ethernet or via UDP). The last rule is
implicitly a deny rule. The set of rules to be processed can be
defined	for each interface.