Ip Routing - Cabletron Systems SmartSwitch 9A100 User Manual

Switch Administration
Enter to view the newly created metric pair:
show PNNIMetric
SmartSwitch # show pnnimetrics
Metrics(ALL)
Metrics Metrics Tag
================================================================================
1 0x9
2 0x9
3 0x111113
4 0x111113
5 0x111113
6 0x111113
7 0x111114
8 0x111114
9 0x111114
10 0x111114
SmartSwitch #
The newly created metric pair appears at the top of the list.
Once the metric is created, we can specify its metric tag number within the definition of a route:
SmartSwitch # add atmroute
PortNumber(A1)
AtmAddress()
PrefixLength(104)
Index(0)
Type(Internal)
Scope(0)
MetricsTag(0)
SmartSwitch #
Administrative Weight and Parallel Routes
A route's administrative weight defines its desirability to the PNNI routing service with regard to computing a path to
a particular location. The lower the administrative weight, the more desirable the route. For example, a route with
administrative weight 200 is considered a better route than one with the default weight of 5040. As a result, the
administrative weight provides a quantitative way to control which routes are favored for call set up.
The ability to control the PNNI routing service in this fashion allows for parallel routes into an IISP domain to be
weighted such that one route is designated as the default, while the other becomes the backup route. This
default/backup routing topology is typically used where a link to a particular domain requires a high degree of
reliability. If the default route becomes congested or reaches its bandwidth limit, the routing service can initiate load
sharing by routing additional calls through the backup route.
4.3

IP ROUTING

The SmartSwitch 9A100 switch provides limited IP routing. IP routing allows switches that are not connected directly
to Ethernet to communicate with an Ethernet-based network management system (NMS). The connection is made by
adding IP routes on the non-connected switches that specify a client on a connected switch as their gateway to the
Ethernet.
:
Direction Index GCAC CLP
Incoming 0x10 CLP0+1
Outgoing 0x10 CLP0+1
Outgoing 0x1 CLP0+1
Outgoing 0x2 CLP0+1
Outgoing 0x4 CLP0
Outgoing 0x18 CLP0
Outgoing 0x1 CLP0+1
Outgoing 0x2 CLP0+1
Outgoing 0x4 CLP0
Outgoing 0x18 CLP0
: b2
: 39:00:00:00:00:00:00:00:00:00:55:77:88
:
:
:
:
: 9
Admin Wt Service Categories
200 CBR
200 CBR
5040 UBR
5040 ABR
5040 NRTVBR
5040 CBR RTVBR
5040 UBR
5040 ABR
5040 NRTVBR
5040 CBR RTVBR
< The index tag of our metric pair
SmartSwitch 9A100 User Guide 4-7
IP Routing