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Force IP Vlan up when no active ports on VSP8400

  • 1 October 2020
  • 3 replies
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Hi,  I have an VSP8400 that we are changing our WAN connection which requires me to connect it to an ERS4926 as an intermediary (We are implementing Fabric Extend VID which requires an external switch to allow the SPBM translated BVID and wan to share the uplink).  The problem is that there is no active port on the VSP only on the ERS that is using SPBM to trunk it back.  With no active ports on the VSP, it looks like the IP interface is down (no arp, can’t ping, etc).  Is there a way to force it up like in the cisco worlds no autostate?  

Thanks

Jon

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Best answer by Miguel-Angel RODRIGUEZ-GARCIA 2 October 2020, 19:11

Jon,

 

From the “show isis adj” the VSP 8400 only sees the ERS while the ERS sees 2 VSP8400.

I see that the VSP8400 is with vIST. The VSP8400 should see the other VSP8400 to be able to synchronize a lot of info concerning the traffic.

Did you cut art of the info?

 

If the VSP status is up (check with “show virt”) the vlan interface show come up.

As a temporary solution, I suggest to create a VRRP address on the VLAN you are looking for.

With this trick the ip interface will stay up :wink:

Mig

 

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Jon,

 

A small drawing of the topology will help to understand.

 

Here some commands to debug, can you share the output of both VSP and ERS?

show isis

show isis spbm

show isis interface

show isis adjacency

show vlan i-sid

show auto nm

show lldp nei

show run

Mig

Hi,  I’ll try to provide what I have, I wound up having to hard wire the connection to the the link up. but I need to get the SPBM connection working as I need that 10Gb port for our redundant WAN connection.

Diagram: 

VSP8400 ----- SPBM Trunk --- ERS4826

On the 8400 - all I have defined is a port based VLAN, an IP on that vlan, and an i-sid assigned to the vlan, no physical ports defined as members of the VLAN

On the 4826 - The vlan is defined as a port based vlan, an i-sid is assigned and a physical port 2/50 assigned to it (this is a tagged port)

Here is the info as requested, I can’t post full, but I hope I post what you need

8400 - Show isis
====================================================================================================
                               ISIS General Info
====================================================================================================
                            AdminState : enabled
                            RouterType : Level 1
                             System ID : 0a02.3800.02fe
                  Max LSP Gen Interval : 900
                                Metric : wide
                   Overload-on-startup : 20
                              Overload : false
                         Csnp Interval : 10
                         PSNP Interval : 2
                     Rxmt LSP Interval : 5
                             spf-delay : 100
                           Router Name : HQB15VSP1
                     ip source-address : 10.254.2.2
                   ipv6 source-address :
              ip tunnel source-address :
                            Tunnel vrf :
                         ip tunnel mtu :
                     Num of Interfaces : 18
                 Num of Area Addresses : 1

show isis spbm
====================================================================================================
                                 ISIS SPBM Info
====================================================================================================
SPBM       B-VID      PRIMARY    NICK     LSDB     IP       IPV6     MULTICAST  SPB-PIM-GW
INSTANCE              VLAN       NAME     TRAP
----------------------------------------------------------------------------------------------------
1          4051-4052  4051       a.38.fe  disable  enable   disable  enable     disable

====================================================================================================
                              ISIS SPBM SMLT Info
====================================================================================================
SPBM       SMLT-SPLIT-BEB       SMLT-VIRTUAL-BMAC     SMLT-PEER-SYSTEM-ID
INSTANCE
----------------------------------------------------------------------------------------------------
1          secondary            0a:02:38:00:01:aa    0a02.3800.01fd


--------------------------------------------------------------------------------
 Total Num of SPBM instances: 1
--------------------------------------------------------------------------------
show isis interface

====================================================================================================
                                ISIS Interfaces
====================================================================================================
IFIDX             TYPE    LEVEL     OP-STATE  ADM-STATE  ADJ    UP-ADJ  SPBM-L1-METRIC
----------------------------------------------------------------------------------------------------

Port4/1           pt-pt   Level 1   UP        UP         1      1       10

show isis adj
====================================================================================================
INTERFACE         L STATE        UPTIME PRI HOLDTIME SYSID             HOST-NAME
----------------------------------------------------------------------------------------------------

Port4/1           1 UP     52d 09:53:55 127       25 bcad.ab90.ec65    HQB15ERS


show vlan i-sid
VLAN_ID    I-SID
----------------------------------------------------------------------------------------------------
1
101        1030003

119        3052897
120        (it was 3010801 when using this)
121        3053893
126        3053894

show autotop nm
==========================================================================================
Local                                                                              Rem
Port     IpAddress       SegmentId MacAddress   ChassisType            BT LS  CS   Port
------------------------------------------------------------------------------------------
0/0      10.254.2.2      0x000000  646a52b32400 VSP8404                12 Yes HtBt  0/0
4/1      10.2.56.8       0x000131  bcadab90ec00 ERS4850GTS-PWR+        12 Yes HtBt  1/49

show lldp nei
==========================================================================================
                                      LLDP Neighbor
==========================================================================================

Port: 4/1       Index    : 43
                Protocol : LLDP
                ChassisId: MAC Address        bc:ad:ab:90:ec:01
                PortId   : IfName             1/49
                SysName  : HQB15ERS
                SysCap   : Br / B
                PortDescr: Unit 1 Port 49
                SysDescr : Ethernet Routing Switch 4850GTS-PWR+  HW:14       FW:5.8.0.3   SW:v5.12.3.011
                Address  : 10.2.56.8

show run (this is the interface in question)
vlan create 120 name "NRBNThorold" type port-mstprstp 0
vlan members 120 4/11-4/12 portmember (this wasn't present when the issue happens)
vlan i-sid 20 3010801 (this was present when the issue is happening)
interface Vlan 120
ip address 10.254.1.241 255.255.255.252 0
exit


ERS 4826
show isis
==========================================
              ISIS General Info
==========================================
            AdminState : enabled
            RouterType : Level 1
             System ID : bcad.ab90.ec65
  Max LSP Gen Interval : 900
                Metric : wide
   Overload-on-startup : 20
              Overload : true
         Csnp Interval : 10
         PSNP Interval : 2
     Rxmt LSP Interval : 5
             Spf-delay : 100
           Router Name : HQB15ERS
     ip-source-address : 0.0.0.0
     Num of Interfaces : 2
 Num of Area Addresses : 1

show isis spbm
=============================================================================
                               ISIS SPBM Info
=============================================================================
SPBM      B-VID       PRIMARY     NICK        LSDB      IP        MULTICAST
INSTANCE              VLAN        NAME        TRAP
=============================================================================
1         4051-4052   4051        a.56.08     disable   disable   disable

show isis inter
===============================================================================
                                ISIS Interfaces
===============================================================================
IFIDX           TYPE    LEVEL    OP-STATE  ADM-STATE  ADJ UP-ADJ SPBM-L1-METRIC
===============================================================================
Port: 1/49      pt-pt   Level 1  UP        UP         1   1      10
Port: 2/49      pt-pt   Level 1  UP        UP         1   1      10

show isis ad
===============================================================================
                                ISIS Adjacencies
===============================================================================
INTERFACE  L STATE        UPTIME PRI HOLDTIME SYSID             HOST-NAME

===============================================================================
Port: 1/49 1 UP     52d 10:30:40 127       20 0a02.3800.02fe    HQB15VSP1
Port: 2/49 1 UP     52d 10:30:25 127       26 0a02.3800.01fd    HQC01VSP1

-------------------------------------------------------------------------------
 2 interfaces have formed an adjacency
-------------------------------------------------------------------------------

show vlan i-sid
==========================================
              Vlan I-SID
==========================================
VLAN_ID    I-SID
---------- ---------
1

120           (it was 3010801 when using this)
129        3053899

show autotop nm
LSlot                                                                     RSlot
LPort IP Addr          Seg ID  MAC Addr     Chassis Type     BT LS   CS   RPort
----- --------------- -------- ------------ ---------------- -- --- ----  -----
 0/ 0 10.2.56.8       0x000000 BCADAB90EC00 4850GTS-PWR+     12 Yes HTBT    NA
 1/49 10.254.2.2      0x000401 646A52B32460 VSP 8404         12 Yes HTBT   4/ 1
 2/49 10.254.2.1      0x000401 646A52BC5060 VSP 8404         12 Yes HTBT   4/ 1
 
 show lldp neighbor
-------------------------------------------------------------------------------
                            LLDP neighbor
-------------------------------------------------------------------------------
Port: 1/49  Index: 1                  Time: 0 days, 00:01:02
        ChassisId: MAC address        64:6a:52:b3:24:00
        PortId:    Interface name     4/1
        SysName:   HQB15VSP1
        SysCap:    rB / rB            (Supported/Enabled)
        PortDesc:  Avaya Virtual Services Platform 8404 Module 8418XSQ - 10GbSR
 Port 4/1
        SysDescr:  VSP-8404 (6.1.1.0)

show run
vlan create 101-103,116,120,129,187-188,191-192,501,505,600,605-606,610,615,620,625,630,640-641,660-662,685,902-905,907-908,910,912,915,997,1685,1902 type port 1
vlan create 4051-4052 type spbm-bvlan
vlan name 120 "WAN"
vlan ports 2/48-49 tagging tagAll filter-untagged-frame enable
vlan ports 2/50 tagging tagAll
vlan configcontrol flexible
vlan members 120 1/50,2/46,2/50
vlan ports 1/50 pvid 120
!vlan ports 1/49,2/49 pvid 0
vlan ports 2/50 pvid 120
no auto-pvid
 

Userlevel 6
Badge +1

Jon,

 

From the “show isis adj” the VSP 8400 only sees the ERS while the ERS sees 2 VSP8400.

I see that the VSP8400 is with vIST. The VSP8400 should see the other VSP8400 to be able to synchronize a lot of info concerning the traffic.

Did you cut art of the info?

 

If the VSP status is up (check with “show virt”) the vlan interface show come up.

As a temporary solution, I suggest to create a VRRP address on the VLAN you are looking for.

With this trick the ip interface will stay up :wink:

Mig

 

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