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Diagnostics and Troubleshooting with the Multicast Manager Tool
Diagnostics and Troubleshooting with the Multicast Manager Tool
This chapter covers:
Managing Diagnostics
The Diagnostics tool gives you a global view and a router-specific view of your network. The following sections describe global diagnostics:
The following section describes router-specific diagnostics:
Show All Groups
With the Show All Groups page, you can:
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View all the active sources and groups in the network in tabular format. Groups are listed in numerical order, and the number of sources for each group appears in the last column. If there is more than one source for a group, select Sources to view them all.
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Figure 4-1 Multicast Diagnostics
(Optional) If you are using S,G caching, the cache contents appear. Click Refresh Cache to refresh the table of sources and groups.
If there are a lot of sources and groups present, you can filter the display to show only those you are interested in:
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To ensure a source is sending data, you can plot traffic over a period of time:
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Figure 4-2 Multicast Diagnostics—Plotting Traffic
To draw a graphical tree between two particular routers:
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To list all of the active sources and groups, within the Show All Groups page, simply scroll down to see all entries.
To draw a multicast tree, select a Group. A new page appears with the multicast tree in tabular and graphical format. Routers known as RPs to the source router appear green.
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Figure 4-3 Drawing a Multicast Tree (Baseline)
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Figure 4-4 Viewing IP Multicast Routing Information
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Figure 4-5 Multicast Diagnostics
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Locate Host
Using the Locate Host page, you can find sources and receivers in the network. Enter the IP Address or hostname (if DNS is configured) and click Locate.
Figure 4-6 Locate Host
Network Status
Using the Network Status page, you can view the status of all devices in the current multicast domain. The System Up Time appears for all devices that are up. Devices that are down or unreachable appear in red.
Figure 4-7 Network Status
RP Status
Using the RP Status page, you can view all routers in the database, their RPs, and the active groups. In a large network with, many S,Gs, it may take some time for this data to appear, because each router in the multicast domain is queried.
Figure 4-8 RP Status
RP Summary
Using the RP Summary, you can view all the RPs that the CMM is aware of, based upon the discovery.
Figure 4-9 RP Summary
For details on clicking on an RP, see Viewing Topology, page 3-2.
IGMP Diagnostics
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Using the IGMP Diagnostics page, you can see the interfaces that have joined onto a particular group:
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Figure 4-10 IGMP Diagnostics
MSDP Status
Using the MSPD Status page, you can view all routers running MSDP and their peering connectivity. You can also view details for a specific router, such as peering information and the SA cache.
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To view peer information or SA cache information, select a router from the list and click the corresponding button.
Figure 4-11 MSDP Status
Layer 2 Switches
Using the Layer 2 Switches pages, you can view:
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To view Layer 2 multicast information or host IPs:
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The possible IP addresses that can be mapped to the MAC address are also shown.
Figure 4-12 Layer 2 Multicast Information
Figure 4-13 Layer 2 Host IPs
Health Check
Using the Health Check page, you can run a health check on a domain. To run a health check, select it from the list, and click Run.
Figure 4-14 Health Check
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6500 Troubleshooting
Using the 6500 Troubleshooting page, you can enable the CMM to gather accurate packet forwarding statistics and other information in a timely manner. This option initiates a remote login session into the PFC. A persistent Telnet session issues show commands and displays live statistics. These sessions are terminated when the windows are closed.
Tip
Figure 4-15 6500 Troubleshooting
Router
Select a 6500 or 7600 router.
Username
Enter your username.
Password
Enter the MSFC password.
Enable
Enter the enable password.
Polling Interval
Interval at which the statistics are updated.
Source
IP address of the source.
Group
IP address of the group.
Edit
Lets you manually type in a group or source address.
Reset
Populates the source and group lists again.
Run Full Trace
Starts the tree at the source instead of the selected router. For details, see Show All Groups.
Run Diagnostics
Draws a graphical tree of the source and group selected, starting at the router selected. Live traffic statistics also appear for this source and group at this router. You can click any other router in the picture to see live packets statistics for them (see Show All Groups).
Ensure pop-up blockers are disabled.
Command
Provides a list of show commands.
Edit
Add your own command by clicking Edit, typing in your command, then click Run Command.
Run Command
Runs the selected show command. Output appears in the text box below.
Clear Output
Clears the output.
E-mail output to TAC
Emails the output to the Cisco TAC.
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When troubleshooting a problem, you can keep a record of the command output:
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Top Talkers
Using the Top Talkers page, you can view the top 20 talkers, sorted by long term. The top 20 talkers are dynamically updated at every polling interval.
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Figure 4-16 Top Talkers
Managing Router Diagnostics
You can view specific multicast diagnostics on a router by clicking the router in the lower left pane.
Figure 4-17 Router Diagnostics
The Router Diagnostics page is similar to the Multicast Diagnostics page (under Show All Groups), except data is for the selected router only.
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Figure 4-18 IGMP Cache Entries
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Figure 4-19 Multicast Information
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Figure 4-20 Multicast Routing Table
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Figure 4-21 PIM Neighbor Information
Viewing User Guide Help
You can view the Cisco Multicast Manager 2.3.4 User Guide PDF by selecting Help.
