Alcatel-Lucent 7750SR for Cisco guys

Alcatel-Lucent 7750SR is a wonderful router especially for the Service provider network.  I find the CLI of this router to be very well structured and more logical than Cisco.

Hardware

On the 7750 SR, packet forwarding is handled by the IOM (Input/Output Module) and MDA (Media Dependent Adapter) cards.

The software/firmware (TiMOS) and startup-config of ALU SR router is stored in CF3 (memory card slot) by default.

The hardware modules have to be provisioned first to function:

SR1# configure card 1

SR1>config>card# card-type iom3-xp-b

SR1>config>card# no shutdown

SR1>config>card# mda 1

SR1>config>card>mda# mda-type m5-1gb-sfp-b

SR1>config>card>mda# no shutdown

SR1# configure port 1/1/1

SR1>config>port# no shutdown

View the status of card and ports:

SR1# show card

SR1# show port

Command Help

To view available commands in a branch type: tree

To view current config in a branch type: info

The commands can be executed in a single line also. Example: configure port 1/1/1 no shutdown

A ‘*’ sysmbol is show at the beginning of cli prompt to indicate changes not saved.

To save type: admin save

To view the running config: admin display-config



Layer 3 Addressing

The default interface "system" cannot be deleted and is used as default router-id in ospf/bgp.
*B:PE1# configure router

*B:PE1>config>router# interface system

*B:PE1>config>router>if# address 140.10.0.1/32

IP addresses cannot be assigned directly to port. Logical named interface has to be created first and then it has to be linked with a physical port.

*B:PE1>config>router# interface toCE1

*B:PE1>config>router>if$ address 140.10.0.101/30

*B:PE1>config>router>if$ port 1/1/1

Loopback interface is to be configured as below:

*B:PE1>config>router# interface loopbackTest

*B:PE1>config>router>if$ address 140.10.0.11/32
*B:PE1>config>router>if$ loopback

To view all L3 or routed interfaces:

*B:PE1>config>router# show router interface

Basic Routing For adding a static route:

*B:PE1# configure router

*B:PE1>config>router# static-route 10.10.0.0/16 next-hop 140.10.0.97

To view route table: *B:PE1# show router route-table

OSPF

OSPF configuration is very similar to that of Cisco IOS-XR.

*B:PE1# configure router ospf
*B:PE1>config>router>ospf# area 0
*B:PE1>config>router>ospf>area$ interface system
*B:PE1>config>router>ospf>area>if$ exit
*B:PE1>config>router>ospf>area# interface toPE2
*B:PE1>config>router>ospf>area>if# interface-type point-to-point

To advertise external routes (LSA-5) the ASBR router must have the additional config line:
*B:PE1>config>router>ospf# asbr

It is impossible to distribute external routes without a policy.
*B:PE1# configure router policy-options >policy-options# begin >policy-options# policy-statement DistributeRT >policy-options>policy-statement$ entry 10 >policy-options>policy-statement>entry$ from protocol direct >policy-options>policy-statement>entry# action accept >policy-options>policy-statement>entry>action# exit

*B:PE1# configure router ospf

*B:PE1>config>router>ospf# export DistributeRT

Some 'show' commands for verifying OSPF:

*B:PE1>config>router>ospf# show router ospf neighbor *B:PE1>config>router>ospf# show router ospf database

BGP

Staring with AS number declartion, follows the bgp configuration. Neighbors are configured inside groups. E-BGP routes cannot be advertised without a policy.

*B:PE1>config>router# autonomous-system 65001

*B:PE1>config>router# bgp

*B:PE1>config>router>bgp# export DistributeRT

*B:PE1>config>router>bgp$ group eBGP

*B:PE1>config>router>bgp>group$ neighbor 140.10.0.98

*B:PE1>config>router>bgp>group>neighbor$ peer-as 65002

*B:PE1>config>router>bgp>group>neighbor$ exit

*B:PE1>config>router>bgp# group iBGP

*B:PE1>config>router>bgp>group$ next-hop-self

*B:PE1>config>router>bgp>group$ neighbor 140.10.0.3

*B:PE1>config>router>bgp>group>neighbor$ peer-as 65001

Some 'show' commands for bgp:

*B:PE1# show router bgp summary *B:PE1# show router bgp neighbor 140.10.0.98 advertised-routes