Figure 10: Channelized E1 IQ Interface Example
This example shows two ways to configure a channelized E1 IQ interface. Figure 10 shows a fractional E1 method and the NxDS0 method seen previously in the complex OC12 configuration example (see Example: Complex Configuration for a Channelized OC12 IQ Interface). The NxDS0 method breaks the channelized E1 IQ interface into discrete DS0 blocks, whereas the fractional method creates a clear channel E1 that is segmented by time slots.
To configure NxDS0 channels, include the partition statement at the [edit interfaces ce1-fpc /pic/port] hierarchy level. Include the timeslots and interface-type ds options to create the desired number of NxDS0 interfaces in time slots 2 through 32.
To configure a fractional E1 on a channelized E1 IQ interface, include the no-partition statement at the [edit interfaces ce1-fpc/pic/port] hierarchy level. After you commit this configuration, configure standard E1 options on the clear channel E1 interface. Include the timeslots statement at the [edit interfaces e1-fpc/pic/port e1-options] hierarchy level. Time slot 1 is reserved; use time slots 2 through 32.
Router A—NxDS0 Method
- [edit]
- interfaces {
-
- ce1-1/2/3 {
- partition 1 timeslots 11 interface-type ds; # Creates NxDS0 channel ds-1/2/3:1.
- partition 2 timeslots 2-10 interface-type ds; # Creates
a channel group with
- } #
9 NxDS0s.
-
- ds-1/2/3:1 {
-
- unit 0 {
-
- family inet {
- address 10.25.1.2/24;
- }
- }
- }
-
- ds-1/2/3:2 {
-
- unit 0 {
-
- family inet {
- address 10.25.2.2/24;
- }
- }
- }
- }
Router A—Fractional E1 Method
- [edit]
- interfaces {
-
- ce1-1/2/6 {
- no-partition interface-type e1; # This creates a single
E1 channel: e1-1/2/6.
- }
-
- e1-1/2/6 {
-
- e1-options {
- timeslots 2-3; # This statement enables only 2 of the 31 NxDS0 time slots
- } #
available on e1-1/2/6. You can use time slots 2 through 32.
-
- unit 0 {
-
- family inet {
- address 10.255.126.2/24;
- }
- }
- }
- }
To verify correct operation of a channelized E1 IQ interface, use the following commands:
To view the interface names of the physical channelized E1 IQ interface and the resulting interfaces configured on the channelized IQ interface, use the show interfaces controller command:
user@RouterA> show interfaces controller
ce1-1/2/3
Controller Admin Link
ce1-1/2/3 up up
# This is the physical channelized E1 IQ interface.
ds-1/2/3:1 up up
ds-1/2/3:2 up up
# These are the resulting N xDS0 interfaces.
user@RouterA> show interfaces controller ce1-1/2/6
Controller Admin Link
ce1-1/2/6 up up
# This is the physical channelized E1 IQ interface.
e1-1/2/6 up up
# This is the resulting E1 interface.
To view information about the physical channelized interface, include the ce1-fpc/pic/port option with the show interfaces command:
user@RouterA> show interfaces ce1-1/2/3
Physical interface: ce1-1/2/3, Enabled, Physical link is Up Interface index: 18, SNMP ifIndex: 1128 Link-level type: Controller, MTU: 1504, Clocking: Internal, Speed: E1, Loopback: None, FCS: 16, Framing: G704, Parent: None Device flags : Present Running Interface flags: Point-To-Point SNMP-Traps Link flags : None Last flapped : 2002-10-04 17:52:51 PDT (00:32:57 ago) Input rate : 0 bps (0 pps) Output rate : 0 bps (0 pps) DS1 alarms : None DS1 defects : None user@RouterA> show interfaces ce1-1/2/6 Physical interface: ce1-1/2/6, Enabled, Physical link is Up Interface index: 25, SNMP ifIndex: 1134 Link-level type: Controller, MTU: 1504, Clocking: Internal, Speed: E1, Loopback: None, FCS: 16, Framing: G704, Parent: None Device flags : Present Running Interface flags: Point-To-Point SNMP-Traps Link flags : None Last flapped : 2002-10-04 17:52:51 PDT (00:34:49 ago) Input rate : 0 bps (0 pps) Output rate : 0 bps (0 pps) DS1 alarms : None DS1 defects : None
To view information about an NxDS0 interface, include the ds-fpc/ pic/port:channel option with the show interfaces command:
user@RouterA> show interfaces
ds-1/2/3:1 detail
Physical interface: ds-1/2/3:1, Enabled, Physical link is Up
Interface index: 73, SNMP ifIndex: 1202, Generation: 325
Link-level type: PPP, MTU: 1504, Clocking: Internal, Speed: 64kbps, Loopback: None,
FCS: 16, Parent: ce1-1/2/3 (Index 18)
Device flags : Present Running
Interface flags: Point-To-Point SNMP-Traps
Link flags : Keepalives
Hold-times : Up 0 ms, Down 0 ms
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive statistics:
Input : 11 (last seen 00:00:02 ago)
Output: 10 (last sent 00:00:06 ago)
LCP state: Opened
NCP state: inet: Opened, inet6: Opened, iso: Opened, mpls: Not-configured
CHAP state: Not-configured
Last flapped : 2002-10-04 18:24:32 PDT (00:01:46 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 559 56 bps
Output bytes : 656 56 bps
Input packets: 33 0 pps
Output packets: 36 0 pps
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 40 40 0
1 expedited-fo 0 0 0
2 assured-forw 0 0 0
3 network-cont 0 0 0
Logical interface ds-1/2/3:1.0 (Index 36) (SNMP ifIndex 1266) (Generation 153)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
Protocol inet, MTU: 1500, Generation: 352, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.25.1/24, Local: 10.25.1.2, Broadcast: Unspecified,
Generation: 445
Protocol iso, MTU: 1500, Generation: 353, Route table: 0
Flags: Is-Primary
Protocol inet6, MTU: 1500, Generation: 354, Route table: 0
Flags: Is-Primary
Addresses, Flags: Is-Preferred
Destination: fe80::/64, Local: fe80::2a0:a5ff:fe3d:ac6, Broadcast: Unspecified,
Generation: 446
Addresses, Flags: Is-Preferred Is-Primary
Destination: feee::10:25:1:0/126, Local: feee::10:25:1:2,
Broadcast: Unspecified, Generation: 448
To view information about the fractional E1 interface, include the e1-fpc/pic/port option with the show interfaces command:
user@RouterA> show interfaces e1-1/2/6
detail
Physical interface: e1-1/2/6, Enabled, Physical link is Up
Interface index: 89, SNMP ifIndex: 1278, Generation: 341
Link-level type: PPP, MTU: 1504, Clocking: Internal, Speed: E1, Loopback:None,
FCS: 16, Framing: G704, Parent: ce1-1/2/6 (Index 25)
Device flags : Present Running
Interface flags: Point-To-Point SNMP-Traps
Link flags : Keepalives
Hold-times : Up 0 ms, Down 0 ms
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive statistics:
Input : 4 (last seen 00:00:05 ago)
Output: 3 (last sent 00:00:09 ago)
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
Not-configured
CHAP state: Not-configured
Last flapped : 2002-10-04 18:28:27 PDT (00:01:07 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 189 0 bps
Output bytes : 478 0 bps
Input packets: 13 0 pps
Output packets: 28 0 pps
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 28 28 0
1 expedited-fo 0 0 0
2 assured-forw 0 0 0
3 network-cont 0 0 0
DS1 alarms : None
DS1 defects : None
DS1 BERT configuration:
BERT time period: 10 seconds, Elapsed: 0 seconds
Induced Error rate: 10e-0, Algorithm: Unknown (0)
Logical interface e1-1/2/6.0 (Index 52) (SNMP ifIndex 1279) (Generation 169)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
Bandwidth: 0
Protocol inet, MTU: 1500, Generation: 401, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.255.126/24, Local: 10.255.126.2, Broadcast: Unspecified,
Generation: 525
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