PNNI Routing

Multi-level PNNI Topology

Note The first byte of the peer group ID indicates the peer group’s level. It also indicates the number of significant bits used in the peer group ID. For example, if the level indicator is 50 (80 decimal), then 80 bits / 8 = 10 bytes; and only 10 of the 13 bytes are significant (39:00:00:00:00:00:00:00:00:00). If you create a new peer group ID, make sure that the bytes you change are within the range of significant bytes for the peer group’s level.

3.Use the show pnnilink command to check the PNNI connectivity within each peer group. For example, switch SWA3 sees links to the other two members of its peer group:

SWA3

# show pnnilink

 

 

 

Num(ALL)

 

 

:

 

Num

Port

Node

Remote Node

Hello State

Link Type

 

Number

Index

IP Addr

 

 

===========================================================================

1

7A2

1

206.61.237.20

2WayInside

Lowest Level Horizontal Link

2

7A3

1

206.61.237.19

2WayInside

Lowest Level Horizontal Link

SWA3 #

4.Select switch SWA3 to be the PGL of group A and switch SWB3 to be the PGL of group B.

5.Use the add pnninode command to add a second, higher-level, node to switch SWA3:

SWA3 # add pnninode

 

 

NodeIndex(2)

:

— Specifies node number 2

NodeLevel(72)

:

— 72 is above the group A’s level of 80

ComplexRepresentation(N)

:

 

SWA3 #

 

 

Do the same for switch SWB3:

 

 

SWB3 # add pnninode

 

 

NodeIndex(2)

:

— Specifies node number 2

NodeLevel(72)

:

— 72 is above the group B’s level of 80

ComplexRepresentation(N)

:

 

SWB3 #

6.Use the set pnnipglelection command to set SWA3 and SWB3’s leadership priority so that they are elected as PGLs within their respective peer groups:

SWA3 # set pnnipglelection

 

 

NodeIndex(1)

:

 

LeadershipPriority(0)

: 205

— Highest priority in election process

ParentNodeIndex(0)

: 2

— Node 2 will represent the peer group A in the parent group

InitTime(15)

:

 

OverrideDelay(30)

:

 

ReElectTime(15)

:

 

SWA3 #

 

 

SmartSwitch ATM User Guide 3-5

Page 49
Image 49
Cabletron Systems 04-0053-01 Do the same for switch SWB3, Specifies node number, Highest priority in election process