[alcatel-nsp] Class-Based Forwarding

Bryan deadheadblues at gmail.com
Fri Jan 28 16:18:04 EST 2011


Hi,

I cannot get CB forwarding to work. Perhaps I have configured
something wrong. My service and SDPs are working and I can ping
through the service fine. Traffic toward 7.7.7.1 should get put in fc
"af" and travel across LSP1, traffic toward 7.7.7.2 should get put in
"ef" class and travel across LSP2. I can see that traffic is getting
put in the right fc by looking at the sap stats, however when I
monitor the port stats (monitor port 1/1/x/ absolute) I can tell
traffic to 7.7.7.2 is not taking LSP2, but rather the default lsp
LSP1. Here are the relevant config pieces, if you need more let me
know.

Topology description:

CE1 is connected to R3, CE2 (7.7.7.1 and 7.7.7.2) is connected to R5.
R3 (10.1.1.3) has two paths to R5 (10.1.1.5), one direct (LSP1: R3-R5)
and one through R4 and R6 (LSP2: R3-R4-R6-R5).


QOS CONFIGURATION:

*A:r3>config>qos# info
----------------------------------------------
#--------------------------------------------------
echo "QoS Policy Configuration"
#--------------------------------------------------
        sap-ingress 2 create
            queue 1 create
            exit
            queue 3 create
            exit
            queue 5 create
            exit
            queue 11 multipoint create
            exit
            fc "af" create
                queue 3
            exit
            fc "ef" create
                queue 5
            exit
            ip-criteria
                entry 10 create
                    match
                        dst-ip 7.7.7.1/32
                    exit
                    action fc "af"
                exit
                entry 20 create
                    match
                        dst-ip 7.7.7.2/32
                    exit
                    action fc "ef"
                exit
            exit
        exit

SERVICE CONFIGURATION:

*A:r3>config>service# info
----------------------------------------------
        customer 1 create
            description "Default customer"
        exit
        sdp 5 mpls create
            far-end 10.1.1.5
            lsp "LSP1"
            lsp "LSP2"
            keep-alive
                shutdown
            exit
            class-forwarding default-lsp "LSP1"
                fc "af" lsp "LSP1"
                fc "ef" lsp "LSP2"
                no shutdown
            exit
            no shutdown
        exit
        epipe 1 customer 1 create
            sap 1/1/2 create
                ingress
                    qos 2
                exit
            exit
            spoke-sdp 5:1 create
            exit
            no shutdown
        exit
----------------------------------------------

MPLS CONFIGURATION:

*A:r3>config>router>mpls# info
----------------------------------------------
            interface "system"
            exit
            interface "tor4"
            exit
            interface "tor5"
            exit
            path "r5a"
                hop 10 10.3.5.5 strict
                no shutdown
            exit
            path "r5b"
                hop 10 10.3.4.4 strict
                hop 20 10.4.6.6 strict
                hop 30 10.5.6.5 strict
                no shutdown
            exit
            lsp "LSP1"
                to 10.1.1.5
                primary "r5a"
                exit
                no shutdown
            exit
            lsp "LSP2"
                to 10.1.1.5
                primary "r5b"
                exit
                no shutdown
            exit
            no shutdown
----------------------------------------------

MPLS LSP AND SDP STATUS:

*A:r3# show router mpls lsp

===============================================================================
MPLS LSPs (Originating)
===============================================================================
LSP Name                           To                  Fastfail     Adm   Opr
                                                       Config
-------------------------------------------------------------------------------
LSP1                               10.1.1.5            No           Up    Up
LSP2                               10.1.1.5            No           Up    Up
-------------------------------------------------------------------------------
LSPs : 2
===============================================================================
*A:r3# show service sdp

==============================================================================
Services: Service Destination Points
==============================================================================
SdpId    Adm MTU  Opr MTU  IP address       Adm  Opr         Deliver   Signal
------------------------------------------------------------------------------
5        0        1556     10.1.1.5         Up   Up          MPLS      TLDP
------------------------------------------------------------------------------
Number of SDPs : 1
------------------------------------------------------------------------------
==============================================================================


Can you see anything wrong?

Thanks,

Bryan


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