Contents

Read Only Task Group

Configuration

Create the Taskgroup

Create the User Group

Option 1. Create a Local User

Verification

Show commands work

Configuration Attempts Fail

Checking Group Assignment

Checking Task Assignment

References

Read Only Task Group

Configuration

To create users on the Aggregation Services Router 9000 (ASR9K) with read-only access, we need to define a task-group with read only privileges, create a user group with that taskgroup, then attach the newly created group to the users.

Create the Taskgroup

These are the tasks the user is allowed to run show commands for.

RP/0/RSP1/CPU0:ASR9000# show run taskgroup taskgroup_read_only

taskgroup taskgroup_read_only

task read fr

task read li

task read aaa

task read acl

task read atm

task read bfd

task read bgp

task read cdp

task read cef

task read cgn

task read eem

task read nps

task read pbr

task read ppp

task read qos

task read rib

task read rip

task read sbc

task read ancp

task read bcdl

task read boot

task read diag

task read dwdm

task read hdlc

task read hsrp

task read ipv4

task read ipv6

task read isis

task read lisp

task read lpts

task read ospf

task read ouni

task read rcmd

task read snmp

task read vlan

task read vpdn

task read vrrp

task read admin

task read eigrp

task read l2vpn

task read bundle

task read crypto

task read fabric

task read static

task read sysmgr

task read system

task read tunnel

task read drivers

task read logging

task read monitor

task read mpls-te

task read netflow

task read network

task read pos-dpt

task read firewall

task read mpls-ldp

task read pkg-mgmt

task read call-home

task read fault-mgr

task read interface

task read inventory

task read multicast

task read route-map

task read sonet-sdh

task read transport

task read ext-access

task read filesystem

task read tty-access

task read config-mgmt

task read ip-services

task read mpls-static

task read route-policy

task read host-services

task read basic-services

task read config-services

task read ethernet-services

!

Create the User Group

Taskgroups are applied to user groups. I've created a usergroup called usergroup_read_only

RP/0/RSP1/CPU0:ASR9000# show run usergroup usergroup_read_only

usergroup usergroup_ready_only

taskgroup taskgroup_read_only

!

end-group

Option 1. Create a Local User

Create a local user, and apply the usergroup.

RP/0/RSP1/CPU0:ASR9000# show run username tyler

username tyler

group usergroup_read_only

secret 5 $1$wTwU$CdHKzfRJlJ7kDvJa7NWdi.

!

Verification

Show commands work

RP/0/RSP1/CPU0:ASR9000# show clock

13:42:03.811 UTC Thu Jun 30 2016

RP/0/RSP1/CPU0:ASR9000# show run

Building configuration...

!! IOS XR Configuration 5.1.3

!

hostname ASR9000

[output omitted]

Configuration Attempts Fail

It isn't possible to block access to configure, but any attempted configure will fail.

A basic configuration like creating a loopback interface fails.

RP/0/RSP1/CPU0:ASR9000# conf t

RP/0/RSP1/CPU0:ASR9000(config)# int loopback 103

% This command is not authorized

Removing BGP fails as well.

RP/0/RSP1/CPU0:ASR9000# configure

RP/0/RSP1/CPU0:ASR9000(config)# no router bgp 65530

% This command is not authorized

Checking Group Assignment

The user logged in is a member of usergroup_read_only

RP/0/RSP1/CPU0:ASR9000# show user group

usergroup_read_only

Checking Task Assignment

This user has access only to READ for the specified tasks.

RP/0/RSP1/CPU0:ASR9000# show user tasks

Task:                  aaa  : READ

Task:                  acl  : READ

Task:                admin  : READ

Task:                 ancp  : READ

Task:                  atm  : READ

Task:       basic-services  : READ

Task:                 bcdl  : READ

Task:                  bfd  : READ

Task:                  bgp  : READ

Task:                 boot  : READ

Task:               bundle  : READ

Task:            call-home  : READ

Task:                  cdp  : READ

Task:                  cef  : READ

Task:                  cgn  : READ

Task:          config-mgmt  : READ

Task:      config-services  : READ

Task:               crypto  : READ

Task:                 diag  : READ

Task:              drivers  : READ

Task:                 dwdm  : READ

Task:                  eem  : READ

Task:                eigrp  : READ

Task:    ethernet-services  : READ

Task:           ext-access  : READ

Task:               fabric  : READ

Task:            fault-mgr  : READ

Task:           filesystem  : READ

Task:             firewall  : READ

Task:                   fr  : READ

Task:                 hdlc  : READ

Task:        host-services  : READ

Task:                 hsrp  : READ

Task:            interface  : READ

Task:            inventory  : READ

Task:          ip-services  : READ

Task:                 ipv4  : READ

Task:                 ipv6  : READ

Task:                 isis  : READ

Task:                l2vpn  : READ

Task:                   li  : READ

Task:                 lisp  : READ

Task:              logging  : READ

Task:                 lpts  : READ

Task:              monitor  : READ

Task:             mpls-ldp  : READ

Task:          mpls-static  : READ

Task:              mpls-te  : READ

Task:            multicast  : READ

Task:              netflow  : READ

Task:              network  : READ

Task:                  nps  : READ

Task:                 ospf  : READ

Task:                 ouni  : READ

Task:                  pbr  : READ

Task:             pkg-mgmt  : READ

Task:              pos-dpt  : READ

Task:                  ppp  : READ

Task:                  qos  : READ

Task:                 rcmd  : READ

Task:                  rib  : READ

Task:                  rip  : READ

Task:            route-map  : READ

Task:         route-policy  : READ

Task:                  sbc  : READ

Task:                 snmp  : READ

Task:            sonet-sdh  : READ

Task:               static  : READ

Task:               sysmgr  : READ

Task:               system  : READ

Task:            transport  : READ

Task:           tty-access  : READ

Task:               tunnel  : READ

Task:                 vlan  : READ

Task:                 vpdn  : READ

Task:                 vrrp  : READ

References

Support Forums - ASR9000/XR Using Taskgroups and understanding Priv levels and authorization - Xander's Guide