SCU 구성
SCU 구성
그림 1: SCU 토폴로지 다이어그램
그림 1 은 라우터 3개가 있는 기본 SCU 구성을 보여줍니다. 소스 라우터 A와 B는 모니터링해야 하는 접두사로 루프백 주소를 사용합니다. 대부분의 구성 작업과 실제 모니터링은 전송 라우터 SCU에서 발생합니다.
라우터 A에서 구성을 시작합니다. 라우터 A의 루프백 주소에는 라우터 SCU의 소스 클래스 A에 할당될 접두사의 원본이 포함됩니다. 그러나 이 라우터에서는 SCU가 처리되지 않습니다. 따라서 기본 OSPF 라우팅을 위한 라우터 A를 구성하고 OSPF 프로세스에서 루프백 인터페이스와 so-0/0/2 인터페이스를 포함합니다.
라우터 A:
[edit]
interfaces {
so-0/0/2 {
unit 0 {
family inet {
address 10.255.50.2/24;
}
}
}
lo0 {
unit 0 {
family inet {
address 10.255.192.10/32;
}
}
}
}
protocols {
ospf {
area 0.0.0.0 {
interface so-0/0/2.0;
interface lo0.0;
}
}
}
이 예에서 라우터 SCU는 활동의 대부분을 처리합니다. 라우터 SCU의 [edit interfaces interface-name unit unit-number family inet accounting] 계층 수준에서 인바운드 및 아웃바운드 인터페이스에 소스 클래스 사용을 허용합니다. 예상 트래픽(입력과 출력, 이 경우 두 개 모두)을 지정해야 합니다.
그런 다음 라우터 A와 B의 루프백 주소 접두사와 일치하는 경로 필터 정책 문을 구성합니다. 라우터 A의 패킷을 라는 한 그룹에 분류하고 라우터 B의 패킷을 라는 두 번째 클래스에 분류하는 정책에 문을 포함합니다.scu-class-ascu-class-b 여러 용어를 포함하는 단일 정책의 효율적인 사용에 주의하십시오.
마지막으로, 포워딩 테이블에 정책을 적용합니다.
라우터 SCU
[edit]
interfaces {
so-0/0/1 {
unit 0 {
family inet {
accounting {
source-class-usage {
input;
output;
}
}
address 10.255.50.1/24;
}
}
}
so-0/0/3 {
unit 0 {
family inet {
accounting {
source-class-usage {
input;
output;
}
}
address 10.255.10.3/24;
}
}
}
lo0 {
unit 0 {
family inet {
address 10.255.6.111/32;
}
}
}
}
protocols {
ospf {
area 0.0.0.0 {
interface so-0/0/1.0;
interface so-0/0/3.0;
}
}
}
routing-options {
forwarding-table {
export scu-policy;
}
}
policy-options {
policy-statement scu-policy {
term 0 {
from {
route-filter 10.255.192.0/24 orlonger;
}
then source-class scu-class-a;
}
term 1 {
from {
route-filter 10.255.165.0/24 orlonger;
}
then source-class scu-class-b;
}
}
}
라우터 B에서 구성 작업을 완료합니다. 라우터 A가 소스 접두사를 제공하는 것처럼, 라우터 B의 루프백 주소는 라우터 SCU의 에 할당된 접두사와 일치합니다.scu-class-b 다시 말하지만, 이 라우터에서는 SCU 처리가 수행되지 않으므로 기본 OSPF 라우팅을 위해 라우터 B를 구성하고 OSPF 프로세스에 루프백 인터페이스와 인터페이스를 포함합니다.so-0/0/4
라우터 B:
[edit]
interfaces {
so-0/0/4 {
unit 0 {
family inet {
address 10.255.10.4/24;
}
}
}
lo0 {
unit 0 {
family inet {
address 10.255.165.226/32;
}
}
}
}
protocols {
ospf {
area 0.0.0.0 {
interface so-0/0/4.0;
interface lo0.0;
}
}
}
상태 확인
SCU가 제대로 작동하는지 확인하려면 다음 명령을 사용합니다.
show interfaces interface-name statistics( | )
show interfaces interface-nameextensivedetail( | )
show routeextensivedetailshow interfaces source-class source-class-name interface-nameclear interface interface-name statistics
문을 구성한 아웃바운드 SCU 인터페이스에서 SCU 통계를 항상 확인해야 합니다.output 다음 세 단계를 수행하여 SCU의 기능을 확인할 수 있습니다.
SCU가 활성화된 라우터의 모든 카운터를 지우고 카운터가 비어 있는지 확인합니다.
한 에지 라우터에서 다른 에지 라우터로 ping을 전송하여 SCU 지원 라우터에서 SCU 트래픽을 생성합니다.
아웃바운드 인터페이스에서 카운터가 올바르게 증가하고 있는지 확인합니다.
다음 섹션에서는 구성 예제와 함께 사용되는 이러한 명령의 출력을 보여 줍니다.
user@scu> clear interfaces statistics all
user@scu> show interfaces so-0/0/1.0 statistics
Logical interface so-0/0/1.0 (Index 4) (SNMP ifIndex 119)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
Protocol inet, MTU: 4470
Source class Packets Bytes
scu-class-a 0 0
scu-class-b 0 0
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.255.50/24, Local: 10.255.50.1
user@scu> show interfaces so-0/0/3.0 statistics
Logical interface so-0/0/3.0 (Index 6) (SNMP ifIndex 113)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
Protocol inet, MTU: 4470
Source class Packets Bytes
scu-class-a 0 0
scu-class-b 0 0
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.255.10/24, Local: 10.255.10.3
user@scu> show interfaces source-class scu-class-a so-0/0/3.0
Protocol inet
Source class Packets Bytes
scu-class-a 0 0
user@scu> show interfaces source-class scu-class-b so-0/0/1.0
Protocol inet
Source class Packets Bytes
scu-class-b 0 0
user@routerB> ping 10.255.192.10 source 10.255.165.226 rapid 10000
user@routerA> ping 10.255.165.226 source 10.255.192.10 rapid 10000
user@scu> show interfaces source-class scu-class-a so-0/0/3.0
Protocol inet
Source class Packets Bytes
scu-class-a 20000 1680000
user@scu> show interfaces source-class scu-class-a so-0/0/1.0
Protocol inet
Source class Packets Bytes
scu-class-b 20000 1680000
user@scu> show interfaces so-0/0/3.0 statistics
Logical interface so-0/0/3.0 (Index 6) (SNMP ifIndex 113)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
Protocol inet, MTU: 4470
Source class Packets Bytes
scu-class-a 20000 1680000
scu-class-b 0 0
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.255.10/24, Local: 10.255.10.3
user@scu> show interfaces so-0/0/1.0 statistics
Logical interface so-0/0/1.0 (Index 4) (SNMP ifIndex 119)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
Protocol inet, MTU: 4470
Source class Packets Bytes
scu-class-a 0 0
scu-class-b 20000 1680000
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.255.50/24, Local: 10.255.50.1
user@scu> show route extensive 10.255.192.0
inet.0: 26 destinations, 28 routes (25 active, 0 holddown, 1 hidden)
10.255.192.0/18 (1 entry, 1 announced)
TSI:
KRT in-kernel 10.255.192.0/18 -> {so-0/0/1.0}
Source class: scu-class-a
*OSPF Preference: 150
Next hop: via so-0/0/1.0, selected
State: <Active Int Ext>
Age: 2:49:31 Metric: 0 Tag: 0
Task: OSPF
Announcement bits (1): 0-KRT
AS path: I
user@scu> show route extensive 10.255.165.0
inet.0: 26 destinations, 28 routes (25 active, 0 holddown, 1 hidden)
10.255.165.0/20 (1 entry, 1 announced)
TSI:
KRT in-kernel 10.255.165.0/20 -> {so-0/0/3.0}
Source class: scu-class-b
*OSPF Preference: 150
Next hop: via so-0/0/3.0, selected
State: <Active Int Ext>
Age: 2:49:31 Metric: 0 Tag: 0
Task: OSPF
Announcement bits (1): 0-KRT
AS path: I
user@scu> show interfaces so-0/0/1 detail
Physical interface: so-0/0/1, Enabled, Physical link is Up
Interface index: 12, SNMP ifIndex: 17, Generation: 11
Link-level type: PPP, MTU: 4474, Clocking: Internal, SONET mode, Speed: OC3,
Loopback: None, FCS: 16, Payload scrambler: Enabled
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 : 46 (last seen 00:00:01 ago)
Output: 45 (last sent 00:00:00 ago)
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
Not-configured
CHAP state: Not-configured
Last flapped : 2002-04-19 11:49:22 PDT (03:10:09 ago)
Statistics last cleared: 2002-04-19 14:52:04 PDT (00:07:27 ago)
Traffic statistics:
Input bytes : 1689276 40 bps
Output bytes : 1689747 48 bps
Input packets: 20197 0 pps
Output packets: 20200 0 pps
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 20053 20053 0
1 expedited-fo 0 0 0
2 assured-forw 0 0 0
3 network-cont 146 146 0
SONET alarms : None
SONET defects : None
Logical interface so-0/0/1.0 (Index 4) (SNMP ifIndex 119) (Generation 3)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
Protocol inet, MTU: 4470
Flags: SCU-in, SCU-out
Generation: 6 Route table: 0
Source class Packets Bytes
scu-class-a 0 0
scu-class-b 20000 1680000
Filters: Input: icmp-so-0/0/1.0-i, Output: icmp-so-0/0/1.0-o
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.255.50/24, Local: 10.255.50.1, Broadcast: Unspecified,
Generation: 8
user@scu> show interfaces so-0/0/1 extensive
Physical interface: so-0/0/1, Enabled, Physical link is Up
Interface index: 12, SNMP ifIndex: 17, Generation: 11
Link-level type: PPP, MTU: 4474, Clocking: Internal, SONET mode, Speed: OC3,
Loopback: None, FCS: 16, Payload scrambler: Enabled
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 : 51 (last seen 00:00:04 ago)
Output: 50 (last sent 00:00:05 ago)
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
Not-configured
CHAP state: Not-configured
Last flapped : 2002-04-19 11:49:22 PDT (03:11:05 ago)
Statistics last cleared: 2002-04-19 14:52:04 PDT (00:08:23 ago)
Traffic statistics:
Input bytes : 1689884 264 bps
Output bytes : 1690388 280 bps
Input packets: 20215 0 pps
Output packets: 20217 0 pps
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0,
Bucket drops: 0, Policed discards: 0, L3 incompletes: 0,
L2 channel errors: 0, L2 mismatch timeouts: 0, HS link CRC errors: 0,
HS link FIFO overflows: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Aged packets: 0,
HS link FIFO underflows: 0
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 20053 20053 0
1 expedited-fo 0 0 0
2 assured-forw 0 0 0
3 network-cont 164 164 0
SONET alarms : None
SONET defects : None
SONET PHY: Seconds Count State
PLL Lock 0 0 OK
PHY Light 0 0 OK
SONET section:
BIP-B1 0 0
SEF 0 0 OK
LOS 0 0 OK
LOF 0 0 OK
ES-S 0
SES-S 0
SEFS-S 0
SONET line:
BIP-B2 0 0
REI-L 0 0
RDI-L 0 0 OK
AIS-L 0 0 OK
BERR-SF 0 0 OK
BERR-SD 0 0 OK
ES-L 0
SES-L 0
UAS-L 0
ES-LFE 0
SES-LFE 0
UAS-LFE 0
SONET path:
BIP-B3 0 0
REI-P 0 0
LOP-P 0 0 OK
AIS-P 0 0 OK
RDI-P 0 0 OK
UNEQ-P 0 0 OK
PLM-P 0 0 OK
ES-P 0
SES-P 0
UAS-P 0
ES-PFE 0
SES-PFE 0
UAS-PFE 0
Received SONET overhead:
F1 : 0x00, J0 : 0x00, K1 : 0x00, K2 : 0x00
S1 : 0x00, C2 : 0xcf, C2(cmp) : 0xcf, F2 : 0x00
Z3 : 0x00, Z4 : 0x00, S1(cmp) : 0x00, V5 : 0x00
V5(cmp) : 0x00
Transmitted SONET overhead:
F1 : 0x00, J0 : 0x01, K1 : 0x00, K2 : 0x00
S1 : 0x00, C2 : 0xcf, F2 : 0x00, Z3 : 0x00
Z4 : 0x00, V5 : 0x00
Received path trace: e so-0/0/1
65 20 73 6f 2d 30 2f 30 2f 31 00 00 00 00 00 00 e so-0/0/1......
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 0d 0a ................
Transmitted path trace: scu so-0/0/1
67 68 62 20 73 6f 2d 30 2f 30 2f 31 00 00 00 00 scu so-0/0/1....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
HDLC configuration:
Policing bucket: Disabled
Shaping bucket : Disabled
Giant threshold: 4484, Runt threshold: 3
Packet Forwarding Engine configuration:
Destination slot: 0, PLP byte: 1 (0x00)
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % bytes
0 best-effort 0 0 0 0 low none
1 expedited-forwarding 0 0 0 0 low none
2 assured-forwarding 0 0 0 0 low none
3 network-control 0 0 0 0 low none
Logical interface so-0/0/1.0 (Index 4) (SNMP ifIndex 119) (Generation 3)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
Protocol inet, MTU: 4470
Flags: SCU-in, SCU-out
Generation: 6 Route table: 0
Source class Packets Bytes
scu-class-a 0 0
scu-class-b 20000 1680000
Filters: Input: icmp-so-0/0/1.0-i, Output: icmp-so-0/0/1.0-o
Addresses, Flags: Is-Preferred Is-Primary
Destination: 10.255.50/24, Local: 10.255.50.1, Broadcast: Unspecified,
Generation: 8