Set Up UCS-E Network by Bridge Virtual Interface (BVI) and Bridge Domain Interface (BDI)

Introduction

This document describes Unified Computing System-E series (UCS-E) network setup by BVI and BDI.

BVI is a Layer-3 routable logical interface that groups physical interfaces into one logical group. BVIs are used on ISR G2 series routers.

BDI is a logical interface that allows bidirectional flow of traffic between a Layer-2 bridged network and a Layer-3 routed network. BDI interface is used on ISR 4000 series routers.

Contributed by Usman Mahmud, Sanaz Tayyar Cisco TAC Engineers.

Prerequisites

Knowledge of routed (L3) and bridged (L2) traffic.

Requirements

Basic knowledge of IP networking and routing. Also, it is expected that the audience has basic knowledge of virtual machines and hypervisors.

Components Used

UCS-E series server modules, Integrated Services Routers (ISR) G2 (3900) and ISR 4K (4451).

Configure

This article covers two configuration examples. One example is based on ISR4K and BDI. The other example covers ISR G2 and BVI.

Network Image

This image is a simple set up that uses ISR4k and BDI:

This image is a simple set up that uses ISR G2 (3900) and BVI:

Configurations

Configuration example for ISR4K and BDI:

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Router(config)# vlan 20

!

Router(config)#interface BDI20

Router (config-if)# ip address 192.168.7.1 255.255.255.0

Router(config-if)# encapsulation dot1Q 20

Router(config-if)# end

!

Router(config)# ucse subslot 0/1

Router(config-ucse)# imc access-port shared-lom console

Router(config-ucse)# imc ip address 192.168.254.3 255.255.255.0 default-gateway 192.168.254.1

!

Router(config)# interface ucse0/1/0

Router(config-if)# ip unnumbered Loopback1

Router(config-if)# carrier-delay 60

Router(config-if)# no negotiation auto

Router(config-if)# switchport mode trunk

Router(config-if)# no mop enabled

Router(config-if)# no mop sysid

!

Router(config)#interface ucse0/1/1

Router(config-if)# no ip address

Router(config-if)# no negotiation auto

Router(config-if)# switchport mode trunk

Router(config-if)# no mop enabled

Router(config-if)#  no mop sysid

Router(config-if)# service instance 20 ethernet

Router(config-if-srv)#encapsulation dot1q 20

Router(config-if-srv)#bridge-domain 20

#########################################################

Configuration example for ISR G2 and BVI:

#########################################################

Router(config)#interface ucse2/0

Router(config-if)# ip unnumbered BVI1

Router(config-if)#service-module heartbeat-reset disable

Router(config-if)# imc ip address 192.168.13.2 255.255.255.0 default-gateway 192.168.13.1

Router(config-if)# imc access-port shared-lom console

Router(config-if)#bridge-group 1

!

Router(config)# interface ucse2/1

Router(config-if)# switchport mode trunk

Router(config-if)#no ip address

!

Router(config)# interface BVI1

Router(config-if)#ip address 192.168.13.1 255.255.255.0

Router(config-if)#end

##########################################################

Verify

Verify BDI state by this command:

Router# show bridge-domain 20

Bridge-domain 20 (2 ports in all)

 State: UP                    Mac learning: Enabled

 Aging-Timer: 300 second(s)

    BDI20  (up)

    ucse0/1/1 service instance 20

   AED MAC address    Policy  Tag       Age  Pseudoport

   -   00C1.64AF.7CF3 to_bdi  static    0    BDI20  >>

   0   000C.29DC.297B forward dynamic   299  ucse0/1/1.EFP20   

Verify BVI interface state by this command:

Router# show ip interface brief

Interface                  IP-Address        OK?   Method  Status    Protocol

ucse2/0                    192.168.13.1    YES    unset       up          up

ucse2/1                    unassigned       YES    unset       up          up

BVI1                         192.168.13.1     YES   NVRAM   up          up

Troubleshoot

Run these commands to check UCS-E module status:

Router# ucse subslot 2/0 status

Service Module is Cisco ucse2/0

Service Module supports session via TTY line 67

Service Module is in Steady state

Service Module reset on error is disabled

Service Module heartbeat-reset is disabled

Router# ucse subslot 2/0 statistics

Module Reset Statistics:

  CLI reset count = 0

  CLI reload count = 1

  Registration request timeout reset count = 0

  Error recovery timeout reset count = 0

  Module registration count = 2

Run this command to check the router inventory:

Router# show inventory

NAME: "CISCO3925-CHASSIS", DESCR: "CISCO3925-CHASSIS"

PID: CISCO3925-CHASSIS , VID: V01 , SN: FTX1425A55N

………………………………………

NAME: "Cisco UCS E-Series Double Wide Intel Performance level 4 Generation with PCIe support on Slot 2", DESCR: "Cisco UCS E-Series Double Wide Intel Performance level 4 Generation with PCIe support"

PID: UCS-E140DP-M1/K9  , VID: V01 , SN: FOC16270UHN

Run this command to check interface status:

Router# show ip interface brief

Interface    IP-Address      OK? Method     Status                         Protocol

ucse2/0     192.168.13.1    YES unset        up                                 up

ucse2/1     unassigned      YES unset         up                                 up

BVI1          192.168.13.1    YES NVRAM    administratively down  down

Related Information

• Understanding Bridge Virtual Interface (BVI) and Bridge Domain Interface (BDI)
• Getting Started Guide for Cisco UCS E-Series Servers and the Cisco UCS E-Series Network Compute Engine