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Avaya 8600 Engineering

Avaya 8600 Engineering

Ethernet routing switch
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Ethernet Routing Switch
8600/8800
Engineering
> OSPF Technical Configuration Guide
Avaya Data Solutions
Document Date: November 2010
Document Number: NN48500-602
Document Version: 1.4

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  • Page 1 Ethernet Routing Switch 8600/8800 Engineering > OSPF Technical Configuration Guide Avaya Data Solutions Document Date: November 2010 Document Number: NN48500-602 Document Version: 1.4...
  • Page 2 Avaya customers and other parties through the Avaya Support Web site: http://www.avaya.com/support Please note that if you acquired the product from an authorized reseller, the warranty is provided to you by said reseller and not by Avaya. Licenses THE SOFTWARE LICENSE TERMS AVAILABLE ON THE AVAYA WEBSITE, HTTP://SUPPORT.AVAYA.COM/LICENSEINFO/...
  • Page 3 Abstract This document provides examples on configuring OSPF on the Ethernet Routing Switch 8600. Note: Configuration steps shown in this document are also included in the Release 3.5 Technical Publication "Configuring IP Operations". Revision Control Date Version Revised By...

  • Page 4: Table Of Contents

    NNSA ASBR Router CLI ......................47 10.8 OSPF ASBR CLI ......................... 48 10.9 Default Route to OSPF CLI ......................49 10.10 Controlling External Routes (NSSA Area) CLI ................ 50 Software Baseline ........................... 52 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 5 Reference Documentation ......................52 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 6: Figures

    Figure 10: OSPF ASBR Configuration Example ..................27 Figure 11: Distributing Default Route to OSPF ................... 30 Figure 12: Controlling External Routes (NSSA Area) ................. 32 Figure 14: PP8600 Network Example ......................38 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 7: Tables

    Tables ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 8 Italic text in a Courier New font indicates text the user must enter or select in a menu item, button or command: ERS5520-48T# show running-config Output examples from Avaya devices are displayed in a Lucida Console font: ERS5520-48T# show sys-info Operation Mode:...

  • Page 9: Ospf Overview

    From the link state database, a routing table is built. This calculation is based on Dijkstra‟s model of calculating the shortest path from one point to another. OSPF Standards supported on Ethernet Routing Switch 8600 The Ethernet Routing Switch 8600 supports the following standards:  RFC 1253 (OSPF MIB) ...

  • Page 10: Configuring Ospf

    Step 4 Enable OSPF Globally config ip ospf router-id 1.1.1.1 These commands enable OSPF and assigns the Circuitless IP created in Step 3 as the OSPF Router-ID config ip ospf enable ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 11: Ospf Network Types

    OSPF Network Types were created to allow OSPF neighboring between routers over different types of network infrastructures. That being the case, each interface can be configured to support each network type. The following table defines the network types and usages that the Ethernet Routing Switch 8600 supports.

  • Page 12: Equal Cost Multi Path (Ecmp)

    ECMP is a feature, which will load balance routed IP traffic across up to four equal cost paths. The Ethernet Routing Switch 8600 supports ECMP operation for OSPF, RIP, static routes, and default routes. There are a few benefits of ECMP when used with OSPF: 1) no need to rerun Dijkstra should the main path fail, the other ECMP path(s) will automatically take the load.
  • Page 13 13 out of 11 Total Num of Dest Networks,13 Total Num of Route Entries displayed. -------------------------------------------------------------------------------- TYPE Legend: I=Indirect Route, D=Direct Route, A=Alternative Route, B=Best Route, E=Ecmp Route , U=Unresolved Route, N=Not in HW ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 14: Security

    6. Security The Ethernet Routing Switch 8600 implementation of OSPF includes security mechanisms to prevent the OSPF routing domain from being attacked by unauthorized routers. This prevents someone from joining an OSPF domain and advertising false information in its OSPF LSAs. Likewise, it prevents a misconfigured router from joining an OSPF domain.

  • Page 15: Configuration Example - Using Md5

    Configure PP8600B config ip ospf interface 10.1.1.2 add- These commands enable md5 authentication for ospf message-digest-key 1 md5-key qwsdf89 interface 10.1.1.2 using key „qwsdf89‟. config ip ospf interface 10.1.1.2 authentication-type message-digest ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 16: Ospf Neighbor States

    Ospf Neighbors ================================================================================ INTERFACE NBRROUTERID NBRIPADDR PRIO_STATE RTXQLEN PERMANENCE ------------------------------------------------------------------------------------------------- ----------------------- 10.1.1.22 1.1.1.1 10.1.1.21 Full Dynamic 10.1.1.17 1.1.1.5 10.1.1.18 Full Dynamic 10.1.1.9 1.1.1.4 10.1.1.10 Full Dynamic Total ospf neighbors: 3 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 17 When forming an adjacency over ATM link, both routers must be able to support Inverse ARP which will map the IP address to a PVC. Ethernet Routing Switch 8600 will do this automatically, however in the case that Ethernet Routing Switch is connecting to another router, ensure that Inverse ARP is enabled on the other router.

  • Page 18: Ospf Areas

    When an ASBR imports external routes, it may import routes info OSPF using external Type 1 or Type 2 metrics. This will give a four-level routing hierarchy as show in the table below according to routing preference. ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 19: Types Of Ospf Areas

    Designated Router (DR). LSA Type 3 are called network-summary-LSAs. Passed between areas. Describes the networks within an area. Originated by the Area Border Router (ABR). ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 20: Figure 5: Normal Areas

    Figure 5: Normal Areas 8.2.1.1 Configuring the ABR There is no configuration parameter to configure a Ethernet Routing Switch 8600 as an ABR. It becomes an ABR automatically when more than one area is configured on it. 8.2.1.2 Configuring the ASBR When configuring an OSPF ASBR on the Ethernet Routing Switch 8600, it can be configured to: ...

  • Page 21: Figure 6: Abr Configuration Example

    On the Ethernet Routing Switch 8600, there are no configuration steps to enable a Ethernet Routing Switch 8600 for ABR. As soon as more than one area is configured, the Ethernet Routing Switch 8600 is automatically configured as an OSPF ABR. The following is an example on how to add an OSPF...
  • Page 22 Ospf General ================================================================================ RouterId: 1.1.1.2 AdminStat: enabled VersionNumber: 2 AreaBdrRtrStatus: true ◄ ASBdrRtrStatus: false ExternLsaCount: 1 ExternLsaCksumSum: 29660(0x73dc) TOSSupport: 0 OriginateNewLsas: 270 RxNewLsas: 1047 TrapEnable: false AutoVirtLinkEnable: false SpfHoldDownTime: 10 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 23: Figure 7: Stub Area Example

    Configure OSPF Interface config ethernet 2/6 ip create 10.1.1.18/30 These two command configure port 2/6 as a brouter port 2090 and enables OSPF on this interface config ethernet 2/6 ip ospf enable ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 24 Create Circuitless IP config ip circuitless-ip-int 1 create These commands create a circuitless IP address which 1.1.1.2/255.255.255.255 will be used for the OSPF Router-ID config ip circuitless-ip-int 1 ospf enable ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 25: Figure 8: Nssa

    Type-7 LSA should be translated. Only those LSA‟s with the N/P-bit set are translated. Figure 8: NSSA 8.2.2.1.2 Configuration Example – Configuring an NSSA Area Figure 9: NSSA Configuration Example ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 26 OSPF routes into config ip route-policy "Rip_Dist" seq 1 enable config ip route-policy "Rip_Dist" seq 1 action permit config ip route-policy "Rip_Dist" seq 1 match-protocol local|ospf config ip route-policy "Rip_Dist" seq 1 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 27: Configuration Examples

    OSPF Route Distribution to RIP, RIP to OSPF (AS-external-LSA Type 1 Metrics) Figure 10: OSPF ASBR Configuration Example To configure a Ethernet Routing Switch 8600 as an OSPF ASBR and distribute all OSPF routes to RIP and RIP to OSPF, perform the following steps: Step 1...
  • Page 28 Step 7 Apply Route Policy to RIP Out-Policy config ip rip interface 10.1.1.41 out- This command applies the Route Policy created in Step policy "Allow" 1 to RIP interface 10.1.1.41. ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 29 The above procedure is fine if you don‟t have a large OSPF network, as all OSPF routes will be distributed to RIP. Instead, you can configure the Ethernet Routing Switch 8600 ASBR to distribute only a default route instead of all OSPF routes to RIP.

  • Page 30: Distributing An Internet Default Route To Ospf Using As-External-Lsa Type 2

    65500 config ip bgp enable config ip bgp neighbor 131.168.1.1 create config ip bgp neighbor 131.168.1.1 remote- as 65503 config ip bgp neighbor 131.168.1.1 admin- state enable ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 31 1.1.1.2 10.1.1.18 0x800000ed 0xaa28 AsExternal 172.2.2.0 1.1.1.3 0 10 0.0.0.0 0x800000be 0x769d You can also use the „show ip ospf lsdb‟ command to view all the LSA‟s including AS_External LSA‟s. ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 32: Controlling External Routes Advertised In An Nssa Area

    This is the default behavior with the Ethernet Routing Switch 8600. Otherwise, if not set, it informs the area border router to drop the external route. A route policy can be created on the Ethernet Routing Switch 8600 manipulate the N/p-bit.
  • Page 33 "15.15.15.0" add- These commands add two Prefix Lists named prefix 15.15.15.0/24 “15.15.15.0” and “14.14.14.0” with pertaining to the networks from the RIP network. config ip prefix-list "14.14.14.0" add- prefix 14.14.14.0/24 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 34 Configure OSPF route distribution to distribute RIP routes as AS-external-LSA Type 1 config ip ospf redistribute rip create config ip ospf redistribute rip metric- type type1 config ip ospf redistribute rip route- policy "P_bit" config ip ospf redistribute rip enable ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 35 "P_bit" seq 2 match-protocol ospf ip route-policy "P_bit" seq 2 set-metric-type type2 ip route-policy "P_bit" seq 2 set-nssa-pbit disable ip rip enable ip rip interface 20.1.1.2 send-mode rip2 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 36 "P_bit" ip ospf redistribute rip enable # RIP POLICY CONFIGURATION ip rip interface 20.1.1.2 out-policy "Rip_Dist" ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 37: Route Summarization Between Area"S

    1 seconds with a dead interval of 4 seconds and a hold down of 4 seconds. On the Ethernet Routing Switch 8600, the Hello and Dead interval are configurable on a interface level while the hold down is an OSPF global parameter.

  • Page 38: Complex Configuration Example

    To change the OSPF Hold Down Interface, enter the following command: ERS 8600# config ip ospf holddown <3..60> Complex Configuration Example: This section has configuration examples for five Ethernet Routing Switch 8600‟s pertaining to the diagram below:  PP8600A is an OSPF ASBR belonging to OSPF Area 0 and 3. It also configured to distribute a default route for Internet traffic.
  • Page 39 "Default_Route" seq 1 set-metric-type type2 ip route-policy "Default_Route" seq 1 set-nssa-pbit enable # CIRCUITLESS IP INTERFACE CONFIGURATION ip circuitless-ip-int 1 create 1.1.1.1/255.255.255.255 ip circuitless-ip-int 1 ospf enable # OSPF CONFIGURATION ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 40 2/6 ip create 10.1.1.17/255.255.255.252 2200 mac_offset 5 ethernet 2/6 ip ospf enable ethernet 2/6 ip ospf priority 50 ethernet 2/7 ip create 10.1.1.9/255.255.255.252 2198 mac_offset 1 ethernet 2/7 ip ospf enable ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 41 # IP ROUTE POLICY CONFIGURATION ip route-policy "Allow" seq 1 create ip route-policy "Allow" seq 1 enable ip route-policy "Allow" seq 1 action permit ip route-policy "Allow" seq 1 match-protocol local|ospf ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 42 # IP REDISTRIBUTION CONFIGURATION ip ospf redistribute rip create ip ospf redistribute rip metric 10 ip ospf redistribute rip enable # RIP POLICY CONFIGURATION ip rip interface 10.1.1.41 out-policy "Allow" ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 43 2 ports remove 1/3-1/48,2/1-2/8 member portmember vlan 2 ports add 1/1-1/2 member portmember vlan 2 ip create 172.3.3.1/255.255.255.0 mac_offset 0 vlan 2 ip ospf enable vlan 2 ip ospf priority 0 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 44 0.0.0.2 create ip ospf area 0.0.0.2 stub true ip ospf interface 10.1.1.18 area 0.0.0.2 ip ospf interface 1.1.1.5 area 0.0.0.2 ip ospf interface 172.3.3.1 area 0.0.0.2 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 45: Appendix

    The following CLI strings are intended to be used in a cut and paste manner to facilitate Ethernet Routing Switch 8600 OSPF configurations. Please reference the associated figure and configuration notes in that section then use the Acrobat "Text Select Tool" to copy the commands and paste in a provisioning window, edit associated parameters as required.

  • Page 46: Md5 Authentication Cli

    1 ospf enable ip ospf router-id 1.1.1.5 ip ospf enable ip ospf area 0.0.0.2 create ip ospf area 0.0.0.2 stub true ip ospf interface 10.1.1.18 area 0.0.0.2 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 47: Nnsa Asbr Router Cli

    "Rip_Dist" seq 1 create config ip route-policy "Rip_Dist" seq 1 enable config ip route-policy "Rip_Dist" seq 1 action permit config ip route-policy "Rip_Dist" seq 1 match-protocol local|ospf ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 48: Ospf Asbr Cli

    "Allow" seq 1 match-protocol local|ospf config ip rip interface 10.1.1.41 out-policy "Allow" To configure the Ethernet Routing Switch 8600 ASBR to distribute only a default route instead of all OSPF routes to RIP: config ip prefix-list "default" add-prefix 0.0.0.0/0 config ip route-policy "Policy_Default"...

  • Page 49: Default Route To Ospf Cli

    "Default_Route" config ip ospf redistribute bgp enable ** Please refer to the „Configure BGP Services‟ manual on how to distribute OSPF routes to BGP. ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 50: Controlling External Routes (Nssa Area) Cli

    "P_bit" seq 2 create config ip route-policy "P_bit" seq 2 enable config ip route-policy "P_bit" seq 2 action permit config ip route-policy "P_bit" seq 2 match-network "14.14.14.0" ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 51 "P_bit" seq 2 set-nssa-pbit disable config ip ospf redistribute rip create config ip ospf redistribute rip metric-type type1 config ip ospf redistribute rip route-policy "P_bit" config ip ospf redistribute rip enable ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...

  • Page 52: Software Baseline

    11. Software Baseline This document is based on Ethernet Routing Switch 8600 Software Release 3.5. 12. Reference Documentation Publication Number Document Title 314720-C Rev 00May Configuring IP Routing Operations 2003 ERS 8600 / 8800 OSPF Technical Configuration Guide November 2010...
  • Page 53 © 2010 Avaya Inc. All Rights Reserved. Avaya and the Avaya Logo are trademarks of Avaya Inc. and are registered in the United States and other countries. All trademarks identified by ®, TM or SM are registered marks, trademarks, and service marks, respectively, of Avaya Inc. All other trademarks are the property of their respective owners.

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