Performing OIR of Cable Interface Line Cards on the Cisco CMTS Routers
First Published: February 14, 2008
Last Updated: February 9, 2009
The Cisco uBR7200 series and Cisco uBR10012 universal broadband routers support online insertion and removal (OIR) of cable interface line cards, but have different requirements. The following sections describe this support for each of the platforms.
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OIR of Cable Interface Line Cards on the Cisco uBR7200 Series Universal Broadband Routers
Technically, the Cisco uBR7200 series universal broadband routers support true online insertion and removal (OIR), or "hot swapping," of cable interface line cards only when exchanging cable interface line cards of the exact same type (for example, exchanging a Cisco uBR-MC28U card for another Cisco uBR-MC28U card). Under these conditions, no reload of the router is required.
When you OIR different types of cable interface line cards (for example, a Cisco uBR-MC16U card replaced by a Cisco uBR-MC16X card, or Cisco uBR-MC16U card replaced by a Cisco uBR-MC28U card), you not only might have to reconfigure the interfaces, we recommend that you reload the router.
OIR of Cable Interface Line Cards on the Cisco uBR10012 Universal Broadband Router
To perform an OIR of cable interface line cards on the Cisco uBR10012 router, do the following steps:
Step 1 From global configuration mode, enter the cr10k card oir-compatibility command for the cable interface line card that you want to OIR, as shown in the following example:
Router(config)# cr10k card 8/0 oir-compatibility
This command helps preserve the configuration and performs some internal synchronization to make sure that the OIR runs successfully.
Note The console log displays a new message appears whenever a line card type has been replaced. For example, if the MC520U-D in subslot 8/1 is replaced by an MC520S-D, the following message is displayed:
%UBR10K-6-COMPAT_NEW_CARD: The 5cable-mc520u-d in slot 8/1 has been replaced by a
This message appears when an OIR operation involves two different types of MC520 line cards.
The console log message does not appear for cards other than the MC520S/U/H. It also does not appear if the OIR operation involves identical MC520 card types. For instance, it will not appear if an MC520U is replaced by another MC520U. In such cases, you not only might have to reconfigure the interfaces, we recommend that you reload the router.
Step 2 Save the configuration to ensure the transition, as shown in the following example:
Router# copy running-config startup-config
Step 3 Turn the power off to the line card using the cable power off command for the slot that is being replaced as shown in the following example:
Router# cable power off 8/0
Line Card 8/0 is POWERED OFF
This powers off the line card gracefully.
Step 4 Before removing the card, verify that the proper grounding instructions have been followed for the card.
For more information about preventing electrostatic discharge (ESD) damage, refer to the document at:
Step 5 Remove the line card.
Step 6 Replace it with the new line card in the slot.
Step 7 Enter the cable power on command to power up the line card, as shown in the following example:
Router# cable power on 8/0
Step 8 Enter the show interface cable command and verify that the card and line protocol is "up" as shown in the following example:
Router# show interface cable 8/0/0
Cable8/0/0 is up, line protocol is up
Hardware is BCM3210 ASIC, address is 000a.13e8.1ca8 (bia 000a.13e8.1a60)
Internet address is 10.1.1.3/24
MTU 1500 bytes, BW 27000 Kbit, DLY 1000 usec, rely 255/255, load 1/255
Encapsulation, loopback not set, keepalive not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 4d07h, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 1834000 bits/sec, 2385 packets/sec
5 minute output rate 1982000 bits/sec, 2431 packets/sec
24461542 packets input, 2348214388 bytes, 0 no buffer
Received 1979 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
24854257 packets output, 2536222931 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
Step 9 Enter the show controllers cable command and verify the hardware status as shown in the following example:
Router# show controllers cable 8/0/0
Cable8/0/0 JIB hardware status:
JIB Downstream port Enabled
JIB Upstream port 0 Enabled
JIB Upstream port 1 Enabled
JIB Upstream port 2 Enabled
JIB Upstream port 3 Enabled
Cable8/0/0 Upconverter is Enabled Output is Enabled
Model: 74-3153-02 Serial Number: 0WAV090200A1 CLEI Code: FFFFFFFFFF
HW Rev: PC2D0109 SW Rev: 203, NVRAM Rev: 021 ECI numb
Step 10 Verify the configuration with the show running-configuration command as shown in the following example:
Router# show running-configuration
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Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.
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