
Using Technician Interface Software
8-72 114088 Rev. A
Routing Tables
Each slot on the router maintains an independent routing table (or “routing pool”).
The table is the default (but not initial) source for a slot to look up routing
information necessary to forward locally received packets.
Each routing table continuously receives, from IP and all other nonmulticast IP
protocols configured on the router, updates on routes added, changed, or deleted
in your network. By means of this continuous, high-speed, internal update
mechanism, the system synchronizes the contents of routing tables on all slots.
(The only exceptions to this rule occur during the first 10 seconds of a router boot
or slot reset operation.)
Mask Subnet mask to be combined with the destination address and then
compared with the value in Destination. If the value of Destination
is 0.0.0.0 (a default route), then the mask is 0.0.0.0 (Prefix = 0).
Metric Indicates the costs of the various interfaces described in a router LS
Type advertisement. Also indicates the cost of each path described
in summary link and AS external link advertisements.
Network Destination IP address for this route, where 0.0.0.0 indicates a
default route.
NextHopAddr / AS IP address of the next hop and next Autonomous System of this
route. If the next hop is an unnumbered interface, the command
displays un# IP cct
<n>
, where n is the number of the circuit on
which the interface has been configured.
Org Origin of the path information (EGP, IGP, or INCOMPLETE).
Peer Rem Addr The remote address of a BGP peer.
Proto Routing method through which the router learned this route: Other,
Local, Netmgmt, ICMP, EGP, BGP, Hello, RIP, IS-IS, OSPF, or
BGP.
Seq Nbr A signed 32-bit integer used to detect old and duplicate link-state
advertisements. The larger the sequence number (when compared
as signed 32-bit integers) the more recent the advertisement.
Sl (or) Slot Number of the slot on which the network address/mask is
configured.
Weight Weight value assigned to the route (displayed only if you specify all
routes [
-A].
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