Chapter 15: Interface IP Configuration
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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IPv4 Route Dest: 10.0.1.9/32
Next Hop: 10.58.138.1
Active: Active-IS
Dist/Metric: 110/20
Protocol: ospf(E2) external type-2
Route Age: 0 days 00:02:30
Interface: tenGigabitEthernet 18/10.0
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VRF Name: default
IPv4 Route Dest: 200.31.62.0/24
Next Hop: 10.58.10.1
Active: Active-IS
Dist/Metric: 115/20
Protocol: isis(L1) internal level-1
Route Age: 0 days 00:00:07
Interface: tenGigabitEthernet 17/10.0
VRF Name: default
IPv4 Route Dest: 200.31.63.0/24
Next Hop: 10.58.10.1
Active: Active-IS
Dist/Metric: 115/20
Protocol: isis(L1) internal level-1
Route Age: 0 days 00:00:07
Interface: tenGigabitEthernet 17/10.0
VRF Name: default
IPv4 Route Dest: 204.16.96.81/32
Next Hop: 10.58.10.1
Active: Active-IS
Dist/Metric: 119/20
Protocol: ospf(E2) external type-2
Route Age: 0 days 00:00:03
Interface: tenGigabitEthernet 17/10.0
802.1Q VLAN Tagging (Q-tags)
MSOs often deploy Layer 3 Virtual Private Networks (VPNs) for commercial customers or other Internet Service Providers
(ISPs). They also use VPNs to segregate their VoIP traffic from their data traffic for traffic engineering purposes. The C4/c
CMTS serves as the Provider Edge (PE) access router. It is required to segregate VPN traffic within the C4/c CMTS domain
using subinterfaces and Virtual Route Forwarders (VRFs). It must signal the VPN association to the adjacent northbound