Rialaitheoir Líonra Tras-Oibre CISCO SR-MPLS, SRv6
Eolas Táirge
Sonraíochtaí
- Ainm an Táirge: Rialaitheoir Líonra Cisco Crosswork
- Gnéithe Tacaithe: Bainistíocht beartais SR-MPLS agus SRv6
- Maximum Policies Displayed: Up to 10 policies with separate colored links
Treoracha Úsáide Táirge
- Navigate to Services & Traffic Engineering > Traffic Engineering.
- In the Traffic Engineering table, select the checkbox of each SR-MPLS or SRv6 policy to view ar an léarscáil.
- You can select up to 10 policies that will appear as separate colored links on the map.
- Ón gcolún Gníomhartha, roghnaigh > View sonraí maidir le ceann de na polasaithe SR-MPLS nó SRv6.
- View the policy details, including segment lists and path computation constraints.
- Is féidir leat na sonraí go léir a onnmhairiú i gcomhad CSV file as seo view.
- Cóipeáil an URL from the browser to share SR-MPLS or SRv6 policy details with others.
SR-MPLS agus SRv6
- This section describes the SR-MPLS and SRv6 policy features that Crosswork supports.
- For a list of known limitations and important notes, see the Cisco Crosswork Network Controller Release Notes.
View Polasaithe SR-MPLS agus SRv6 ar an léarscáil toipeolaíochta
- To get to the Traffic Engineering topology map, choose Services & Traffic Engineering > Traffic Engineering.
- From the Traffic engineering table, click the checkbox of each SR-MPLS or SRv6 policy you want to view ar an léarscáil.
- You can select up to 10 policies that will appear as separate colored links.
| glaoch amach Níl. | Cur síos |
| 1 | Click the appropriate check box to enable the following options:
• Show: IGP path—Displays the IGP path for the selected SR-TE policy. • Show: Participating only—Displays only links that belong to the selected SR-TE policy. All other links and devices disappear. |
| 2 | A device with an orange ( ) outline indicates there is a node SID associated with that device or a device in the cluster. |
| 3 | When SR-TE policies are selected in the SR-MPLS or SRv6 tables, they show as colored directional lines on the map, indicating source and destination.
An adjacency segment ID (SID) is shown as an orange circle on a link along the path ( |
| 4 | SR-MPLS and SRv6 policy origin and destination: Má tá an dá A agus Z are displayed in a device cluster, at least one node in the cluster is a source, and another is a destination. The A+ denotes that there is more than one SR-TE policy that originates from a node. The Z+ denotes that the node is a destination for more than one SR policy. |
| 5 | Braitheann ábhar na fuinneoige seo ar a bhfuil roghnaithe nó scagtha. Sa sampla seoample, the SR-MPLS tab is selected, and the SR Policy table is displayed. |
| 6 | Click on either the SR-MPLS or SRv6 cluaisíní go view an liosta faoi seach de bheartais SR-TE. |
).| glaoch amach Níl. | Cur síos |
| 7 | Onnmhairí go léir data into a CSV fileNí féidir leat sonraí roghnaithe ná scagtha a onnmhairiú. |
| 8 | Tá an Mini dashboard provides a summary of the operational SR-MPLS or SRv6 policy status. If filters are applied, the Mini dashboard is updated to reflect what is displayed in the SR Policy and SRv6 Policy tables. In addition to the policy status, the SR-MPLS mini dashboard table displays the number of PCC and PCE-initiated tunnels that are faoi láthair listed in the SR Policy table. |
| 9 | Ligeann an rogha seo duit a roghnú conas ba chóir an scagaire grúpa (nuair atá sé in úsáid) a chur i bhfeidhm ar shonraí an tábla. Mar shamplaample, más Headend only was selected, then it would only display policies where the headend device of the policy is in the selected group. This filter allows you to see specific
configurations and is useful when you have a large network. Filter options: • Headend or endpoint—Show policies with either the headend or endpoint device in the selected group. • Headend and endpoint—Show policies if both the headend and endpoint are in the group. • Headend only—Show policies if the headend device of the policy is in the selected group. • Endpoint only—Show policies if the endpoint device of the policy is in the selected group. |
View Sonraí beartais SR-MPLS agus SRv6
- View Sonraí leibhéal beartais SR-MPLS nó SRv6 TE chomh maith le liostaí deighleog agus aon srianta ríofa cosáin atá cumraithe ar bhonn cosáin in aghaidh an iarrthóra.
Nós imeachta
Céim 1
- From the Actions column, choose
> View sonraí maidir le ceann de na polasaithe SR-MPLS nó SRv6.
Céim 2
- View Sonraí polasaí SR-MPLS nó SRv6. Ón mbrabhsálaí, is féidir leat an URL agus a roinnt le daoine eile.
Nóta
- The Delay value is calculated for all policies every 10 minutes. Hover your mouse over the “i” icon (next to the Delay value) to view an uair dheireanach a nuashonraíodh an luach.
Amharcléiriú ar chonair agus ar mhéadrachtaí IGP
- View an cosán fisiceach agus na méadrachtaí idir críochphointí na mbeartas SR-MPLS roghnaithe.
Nós imeachta
- Step 1: From the SR Policy table, check the check box next to the SR-TE (SR-MPLS and SRv6) policies you are interested in.
- Step 2: Check the Show IGP Path check box. The IGP paths for the selected SR-MPLS policies are displayed as straight lines instead of the segment hops. In a dual-stack topology, the Participating only checkbox must also be checked to view méadrachtaí ar naisc rannpháirteacha.
- Céim 3: Cliceáil
> Metrics tab. - Step 4: Toggle applicable metrics to ON.
Nóta
You must check the Show IGP Path check box to view méadracht.
Aimsigh Ilchosáin Iarrthóra (MCPanna)
- Visualizing MCPs gives you insight into which paths might be a better alternative to the currently active ones.
- If you determine to do so, you can then manually configure the device and change which path becomes active.
Nótaí Tábhachtacha
- Only PCC-initialized SR-TE policies with MCPs are supported.
- Crosswork does not distinguish dynamic paths from explicit paths. The Policy Type field value displays as ‘Unknown’.
- Is féidir leat view cosáin fhollasacha gníomhacha ach ní cosáin fhollasacha iarrthóra neamhghníomhacha sa Chomhéadan Úsáideora.
Sula dtosaíonn tú
A policy must be configured with MCPs on devices before they can be visualized on the Traffic Engineering topology map. This configuration can be done manually or within the Crosswork Network Controller.
- Step 1: From the main menu, choose Services & Traffic Engineering > Traffic Engineering > SR-MPLS or SRv6 tab.
- Step :2 Navigate to the active SR-TE policy that has MCPs configured and view it on the topology map.
- Check the check box next to the SR-TE policy that has MCPs configured.
- View an polasaí SR-TE atá aibhsithe ar an léarscáil toipeolaíochta.
- Sa seanample, feiceann tú go bhfuil an cosán gníomhach ag dul ó cw-xrv53 > cw-xrv57 > cw-xrv58 > cw-xrv59 > cw-xrv60.
Céim 3: View liosta na gcosán iarrthóirí.
- From the SR-MPLS or SRv6 Policy table Actions column, click
> View sonraí. Feictear liosta de chonairí iarrthóra mar aon le sonraí beartais i bhfuinneog sonraí beartais SR. Léiríonn an A glas faoin gcolún Stáit an cosán gníomhach.
- Step 4: You can expand individual paths or click Expand all to view details of each path.
- Step 5: Visualize the candidate path on the topology map.
- Check the check box next to any candidate path.
Nóta
You will not be able to select or view cosáin shoiléire iarrthóra.
- From the Candidate path area, hover your mouse over the candidate path name. The candidate path is highlighted on the topology map.
- Sa seanample, feiceann tú go dtéann an cosán malartach go díreach ó cw-xrv53 > cw-xrv60.
Amharcléirigh cosáin bhunúsacha a bhaineann le lipéad sainithe Aitheantais Deighleog Ceangail (B-SID)
- Ligeann Rialaitheoir Líonra Crosswork duit cosán bunúsach hop B-SID a shamhlú atá cumraithe agat de láimh ar fheiste nó atá cumraithe ag baint úsáide as Rialaitheoir Líonra Crosswork. Sa sampla seoample, we have assigned 15700 as a B-SID label on an SR-MPLS policy hop.
- Chuig view an cosán bunúsach B-SID le haghaidh polasaí SR-MPLS nó SRv6, déan an méid seo a leanas:
Step 1: Choose Services & Traffic Engineering > Traffic Engineering.
Step :2 From the SR Policy table, check the check box next to the policy that has a hop assigned with a B-SID label. Hover your mouse over any part of the SR-MPLS row to see the B-SID name. The B-SID path is highlighted in orange on the topology map.
Sa seanample, feiceann tú go bhfuil an cosán B-SID ag dul ó cw-xrv51 go cw-xrv52.
Step 3: From the SR policy details page, click > View sonraí.
Step 4: Expand the active path and click the B-Sid Label ID to see the underlying path.
- Sa seanample, téann an cosán bunúsach i ndáiríre ó cw-xrv51 > cw-xrv54 > cw-xrv53 > cw-xrv52.
Amharcléirigh cosáin SR dúchasacha
- Visualizing the native path will help you in OAM (Operations, Administration, and Maintenance) activities to monitor label-switched paths (LSPs) and quickly isolate forwarding problems to assist with fault detection and troubleshooting in the network.
- Since this feature uses multipaths, all ECMP paths are shown between the source and destination. You can visualize only native SR IGP paths.
Réamhriachtanais gléasanna
Confirm the following device software and configurations are met prior to visualizing native paths.
- Devices should be running Cisco IOS XR 7.3.2 or higher. Run show version command to verify it.
- Devices should have GRPC enabled. For information on enabling gRPC on PCE, see Requirements for adding SR-PCE providers in the Cisco Crosswork Network Controller 7.1 Administration guide.
- Run show run grpc to confirm GRPC configuration. You should see something similar to this:
Nóta
Address family is only required in an IPv4 topology. - To enable GRPC with a secure connection, you must upload security certificates to connect to the device.
- Run show run grpc to confirm GRPC configuration. You should see something similar to this:
- Devices should have GNMI capability enabled and configured.
- From Device Management > Network Devices, click the IP address for the device you are interested in.
- Confirm that GNMI is listed under Connectivity details.
Based on the type of devices, these device encoding type are available. The appropriate encoding type is determined by the device’s capabilities, the data model it supports, and how the data is expected to be transmitted between the device and Crosswork Network Controller. - JSON: Human-readable and widely supported by most devices.
- BYTES: Encodes data in binary format for efficient transmission.
- PROTO: A compact, efficient binary format used with gRPC.
- ASCII: A plain-text format that is human-readable but less commonly used compared to JSON.
- JSON IETF: A standardized variant of JSON that adheres to IETF YANG specifications.
- Devices should have the CDG router static address. Static route should be added from the device to the southbound CDG IP address. For example:
Amharcléirigh cosáin dhúchasacha
- Lean na céimeanna seo chun fiosrúchán conaire a chruthú.
Céim 1: From the main menu, choose Services & Traffic Engineering > Path Query.The Path Query dashboard appears.
Céim 2: Click New query.
Céim 3: Enter the device information in the required fields to find available Native SR IGP Paths and click Get paths.
Nóta
Path queries may take a moment to complete. When the Running Query ID pop-up appears, you can also select View ceisteanna roimhe seo chun filleadh ar an Painéal Iarratais Cosáin. Má bhí ceisteanna cosáin agat cheana féin sa liosta, is féidir leat view sonraí atá ann cheana féin de réir mar a leanann an fiosrúchán nua ag rith sa chúlra, rud a léirítear leis an deilbhín gorm Rith sa cholún Staid an Fhiosrúcháin. Nuair a chasann an staid nua fiosrúcháin glas, agus nuair a bheidh sé críochnaithe, is féidir é a vieweag.
Céim 4: Cliceáil View torthaí nuair a bheidh sé ar fáil ar an bhfuinneog aníos Running Query ID. Feictear an fhuinneog Path Details leis na sonraí comhfhreagracha faoi na cosáin atá ar fáil agus taispeánann an léarscáil toipeolaíochta na cosáin IGP Dúchasacha SR atá ar fáil ar chlé.
Cumraigh gaolmhaireachtaí nasc TE i Rialaitheoir Líonra Crosswork
- If you have any affinities you wish to account for when provisioning an SR policy, Tree-SID, or RSVP-TE tunnel, then you can optionally define affinity mapping on the Crosswork Network Controller UI for consistency with affinity names in device configurations. Crosswork Network Controller will only send bit information to SR-PCE during provisioning. If an affinity mapping is not defined in the UI, then the affinity name is displayed as “UNKNOWN”. If you want to configure affinity mappings in Crosswork Network Controller for visualization purposes, you should collect affinities on the device, then define affinity mapping in Crosswork Network Controller with the same name and bits that are used on the device.
- The affinity configuration on interfaces simply turns on some bits. It is a 32-bit value, with each bit position (0–31) representing a link attribute. Affinity mappings can be colors representing a certain type of service profile (le haghaidh seanample, low delay, high bandwidth, and so on). This makes it easier to refer to link attributes.
- See SR, Tree-SID, or RSVP-TE configuration documentation for your specific device to view tuairiscí agus orduithe cumraíochta tacaithe (m.sh.ample, Segment Routing Configuration Guide for Cisco ASR 9000 Series Router)
- Seo a leanas exampTaispeánann le cumraíocht gaolmhaireachta SR-TE (léarscáil gaolmhaireachta) ar fheiste:
- Céim 1: Choose Administration > Settings > System settings > Traffic engineering > Affinity > TE link affinities. Alternatively, you can define affinities while provisioning an SR-TE policy, Tree-SID, or RSVP-TE tunnel by clicking Manage mapping under the Constraints > Affinity field.
- Céim 2: Click + Create to add a new affinity mapping.
- Céim 3: Enter the name and the bit it will be assigned. For example (ag baint úsáide as an chumraíocht thuas):
- Céim 4: Click Save to save the mapping. To create another mapping, you must click + Create and save the entry. Affinity removal and orphan TE tunnels
Nóta
You should remove the TE tunnel before removing the affinity to avoid orphan TE tunnels. If you have removed an affinity associated with a TE tunnel, the affinity is shown as “UNKNOWN” in the SR policy / RSVP-TE tunnel details window.
Breithnithe imscaradh beartais
Sula ndéantar beartais a sholáthar, smaoinigh ar na roghanna seo.
- On a scaled setup with high node, policy, or interface counts, a timeout may occur during policy deployment. To configure timeout options, see Configure TE timeout settings.
- For visualization purposes, you can optionally collect affinity information from your devices and then map them in Cisco Crosswork before provisioning an SR policy, Tree-SID, or RSVP-TE tunnel. See Affinity map configurations for sample cumraíochtaí.
Cruthaigh beartais shoiléire SR-MPLS
- Cruthaíonn an tasc seo beartais SR-MPLS ag baint úsáide as cosán follasach (seasta) ina bhfuil liosta d'Aitheantóirí réimír nó de Dheighleog Comharsanachta (liosta SID), agus gach ceann acu ag léiriú nód nó nasc feadh an chosáin. Lean na céimeanna seo chun beartais SR-MPLS follasacha a chruthú.
Sula dtosaíonn tú
- Collect affinity information from your devices, and then map them in the Crosswork Network Controller UI before creating an explicit SR-MPLS policy. See Configure TE link affinities in Crosswork Network Controller.
Céim 1: Choose Services & Traffic Engineering > Traffic Engineering > SR-MPLS.
Céim 2: Click Create > PCE Init.
Nóta
If you would like to provision a PCC-initiated policy using Cisco Network Services Orchestrator (NSO) via the Crosswork UI, see Create SR-TE policies (PCC-initiated).
Céim 3: Under Policy details, enter or select the required SR-MPLS policy values. Hover the mouse pointer over the to view cur síos ar an réimse.
Leid
If you have set up device groups, you can select the device group from the Device Groups drop-down list. Then navigate and zoom in on the topology map to click the device for headend or endpoint selection.
- Céim 4: Under Policy path, click Explicit path and enter a path name.
- Céim 5: Add segments that will be part of the SR-MPLS policy path.
- Céim 6: Cliceáil Réamhview and confirm that the policy you created matches your intent.
- Céim 7: If you want to commit the policy path, click Provision to activate the policy on the network or exit to abort the configuration process.
- Céim 8: Validate the SR-MPLS policy creation:
- Confirm that the new SR-MPLS policy appears in the Traffic Engineering table. You can also click the check box next to the policy to see it highlighted in the map.
Nóta
The newly provisioned SR-TE policy may take some time, depending on the network size and performance, to appear in the table. The Traffic engineering table is refreshed every 30 seconds.
- View agus sonraí an pholasaí nua SR-MPLS a dheimhniú. Ón tábla innealtóireachta tráchta, cliceáil ar an agus roghnaigh View sonraí.
Nóta
- Ar shocrú le líon ard nóid, beartais nó comhéadain, féadfaidh sos ama tarlú le linn imscaradh beartais. Chun roghanna sos ama a chumrú, féach Cumraigh socruithe sos ama TE.
Cruthaigh beartais dhinimiciúla SR-MPLS bunaithe ar intinn optamaithe
SR-PCE computes a path for the policy based on metrics and path constraints (affinities or disjointness) defined by the user. A user can select from three available metrics to minimize in-path computation: IGP, TE, or latency. The SR-PCE will automatically re-optimize the path as necessary based on topology changes. If a link or interface fails, the network will find an alternate path that meets all the criteria specified in the policy and raise an alarm. If no path is found, an alarm is raised, and the packets are dropped.
Follow these steps to create SR-MPLS policies with a dynamic path.
- Céim 1: Choose Services & Traffic Engineering > Traffic Engineering > SR-MPLS.
- Céim 2: Click Create > PCE Init. If you would like to provision a PCC-initiated policy using Cisco Network Services Orchestrator (NSO) via the Crosswork UI, see Create SR-TE policies (PCC-initiated).
- Céim 3: Faoi Shonraí beartais, cuir isteach nó roghnaigh na luachanna beartais SR-MPLS riachtanacha. Bog an pointeoir luiche thar view cur síos ar gach réimse.
Leid
- If you have set up device groups, you can select the device group from the Device Groups drop-down menu. Then navigate and zoom in on the topology map to click the device for headend or endpoint selection.
- Céim 4: Under Policy path, click Dynamic path and enter a path name.
- Céim 5: Under Optimization objective, select the metric you want to minimize.
- Céim 6: Define any applicable constraints and disjointness.
Breithnithe gaolmhara
- Affinity constraints and disjointness cannot be configured on the same SR-MPLS policy. Also, there cannot be more than two SR-MPLS policies in the same disjoint group or subgroup. The configuration will not be allowed during Preview.
- If there are existing SR-MPLS policies belonging to a disjoint group that you define here, all SR-MPLS policies that belong to that same disjoint group are shown during Preview.
- Céim 7: Under Segments, select whether or not protected segments should be used when available.
- Céim 8: Enter any applicable SID constraint. Crosswork Network Controller will try to find a path with this SID. If a path with the SID constraint cannot be found, the provisioned policy will remain operationally down until the conditions are met.
Faisnéis SID
- Flexible Algorithm—The values correspond to the Flexible Algorithm that are defined on the device and the 128-255 range is enforced by Cisco IOS XR.
- Algorithm 0—This is a Shortest Path First (SPF) algorithm based on link metric. This shortest path algorithm is computed by the Interior Gateway Protocol (IGP).
- Algorithm 1—This is a Strict Shortest Path First (SSPF) algorithm based on link metric. Algorithm 1 is identical to Algorithm 0 but requires that all nodes along the path honor the SPF routing decision. Local policy does not alter the forwarding decision. For example, a packet is not forwarded through a locally engineered path.
- Céim 9: Cliceáil Réamhview. The path is highlighted on the map.
- Céim 10: To commit the policy path, click Provision.
- Céim 11: Validate the SR-MPLS policy creation.
- Confirm that the new SR-MPLS policy appears in the SR Policy table. You can also click the check box next to the policy to see it highlighted in the map.
Nóta
- The newly provisioned SR-MPLS policy may take some time, depending on the network size and performance, to appear in the Traffic Engineering table. The table is refreshed every 30 seconds.
- View agus sonraí an pholasaí nua SR-MPLS a dheimhniú. Ón tábla innealtóireachta tráchta, cliceáil agus roghnaigh View sonraí.
Cruthaigh beartais SR-TE (tionscnaithe ag PCC)
- Cruthaíonn an tasc seo beartais SR-MPLS nó SRv6 sainráite nó dinimiciúla ag baint úsáide as Cisco Network Services Orchestrator (NSO) tríd an gcomhéadan úsáideora Crosswork.
Sula dtosaíonn tú
If you want to create explicit PCC-initiated SR-MPLS or SRv6 policies, you must create a Segment IDs list (Services & Traffic Engineering > Provisioning (NSO) > SR-TE > SID-List). An explicit (fixed) path consists of a list of prefix or adjacency Segment IDs, each representing a node or link along on the path.
Céim 1: Ón bpríomh-roghchlár, roghnaigh Seirbhísí & Innealtóireacht Tráchta > Soláthar (NSO).
Céim 2: From SR-TE > Policy, click
. Crosswork displays the Create SR-TE > Policy window.
Nóta
- You may also click
chun polasaí SR-TE atá ann cheana a allmhairiú. - Céim 3: Enter the policy constraints and required values.
- You must populate the following options:
Tábla 1: Cumraíocht Polasaí SR-TE
| Leathnaigh seo: | To specify this: |
| ainm | Enter a name for this SR-TE policy. |
| head-end | • You can click to select a node or manually enter the node name. |
| tail-end | Manually enter the node name. |
| dath | Enter a color. For exampfaoi: 200. |
| cosán | a. Cliceáil and enter a preference value. For exampfaoi: 123
b. Select one of the following and toggle the switch to enable: • explicit-path—Click • dynamic-path—Select the metric you want to minimize and define any applicable constraints and disjointness. |
| srv6 | If you are creating an SRv6 policy, toggle Enable SRv6. |
- Step 4: When you are finished, click Dry Run to validate your changes and save them. Crosswork will display your changes in a pop-up window.
- Más mian leat seirbhís a chumrú nach bhfuil ag teacht leis na riachtanais a bhfuil cur síos orthu sa sampla seoample, déan teagmháil le Taithí Chustaiméirí Cisco.
- Step 5: When you are ready to activate the policy, click Commit Changes.
Modhnaigh beartais SR-MPLS
- Ní féidir leat ach polasaithe SR-MPLS a mhodhnú nó a scriosadh a cruthaíodh ag baint úsáide as API nó UI Rialaitheoir Líonra Crosswork. Lean na céimeanna seo chun viewpolasaí SR-MPLS a mhodhnú, a mhodhnú, nó a scriosadh.
- Céim 1: Choose Services & Traffic Engineering > Traffic Engineering > SR-MPLS tab.
- Céim 2: From the Traffic engineering table, locate the SR-MPLS policy you are interested in and click.
- Céim 3: Roghnaigh View sonraí nó Cuir in Eagar/Scrios. Tar éis sonraí an pholasaí SR-MPLS a nuashonrú, is féidir leat réamh-view na hathruithe ar an léarscáil sula sábhálfar í.
CCanna
C: Cé mhéad polasaí is féidir a thaispeáint ar an léarscáil toipeolaíochta?
A: Up to 10 policies can be selected and displayed as separate colored links on the map.
C: An féidir liom sonraí roghnaithe a onnmhairiú ó shonraí an pholasaí? view?
A: Ní féidir, ní féidir leat na sonraí go léir a easpórtáil ach i gcóip CSV file from the policy details view.
Doiciméid / Acmhainní
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Rialaitheoir Líonra Tras-Oibre CISCO SR-MPLS, SRv6 [pdfTreoir Úsáideora SR-MPLS, SRv6, Rialaitheoir Líonra Crosswork SR-MPLS SRv6, SR-MPLS SRv6, Rialaitheoir Líonra Crosswork, Rialaitheoir Líonra, Rialaitheoir |