실제 구매 전에 GNS3의 에뮬레이트 된 Cisco 7200 라우터에서 여러 기능을 테스트하고 있습니다.
내가 테스트 한 기능 중 하나는 LNS 기능입니다. 필자는 기존 토폴로지를 적용함에 따라 IP 주소와 이름이 변경되었지만 토폴로지 및 구성 측면 에서이 블로그 게시물 을 주로 따르고 있습니다.
탈락이 발생하는 이유 또는 적어도 문제를 진단하기 위해 내가 볼 수있는 것을 알아 내려고 노력 중입니다. CPE와 LNS 간의 연결은 일반적인 연결 끊기 외에는 괜찮습니다.
더 나아 가기 전에 : 호스트 CPU가 최대가 될 때 GNS3에서 임의의 드롭 아웃이 발생했음을 언급해야합니다. 이 경우 CPU는 높지만 완전히 최대치가 아니며 제대로 실행되고있는 것 같습니다. 여전히 GNS3 관련 문제인 것으로 의심되지만 확실하지 않습니다.
내 토폴로지에서 :
모든 라우터 (CPE, LAC, LNS)는 다음과 같습니다.
Cisco IOS 소프트웨어, 7200 소프트웨어 (C7200-ADVIPSERVICESK9-M), 버전 15.0 (1) M, RELEASE SOFTWARE (fc2)
245760K / 16384K 바이트 메모리의 Cisco 7206VXR (NPE400) 프로세서 (개정 A).
- EDGE01 은 내 LNS입니다.
- CPE-A 는 고객 라우터입니다.
- 실험실의 업스트림 라우터를 LAC로 사용하고 있지만 LNS가 프로덕션 환경에있을 때와 마찬가지로 문제 해결을 시뮬레이트하고 싶지 않으므로 LAC 로그를 쉽게 사용할 수 없습니다. .
CPE 장치가 몇 분마다 연결을 끊었다가 다시 연결하는 것으로 나타 났지만 모든 것이 제대로 작동하는 것 같습니다. 타임 아웃은 항상 비슷하지만 정확히 같지는 않습니다.
EDGE01#sh logging | inc Foreign Host Close
*Mar 6 13:34:34.000: VPDN Vi2.1 disconnect (AAA) IETF: 8/port-error
Ascend: 41/TCP Foreign Host Close
*Mar 6 13:36:40.340: VPDN Vi2.1 disconnect (AAA) IETF: 8/port-error
Ascend: 41/TCP Foreign Host Close
*Mar 6 13:39:38.107: VPDN Vi2.1 disconnect (AAA) IETF: 8/port-error
Ascend: 41/TCP Foreign Host Close
*Mar 6 13:41:33.003: VPDN Vi2.1 disconnect (AAA) IETF: 8/port-error
Ascend: 41/TCP Foreign Host Close
EDGE01#
다음은 무슨 일이 일어나고 있는지에 대한 로그 샘플입니다. 제대로 읽지 못했을 수도 있지만 CPE와 LNS에서 "다른 사람이 세션이 아닌 나를 연결 해제했습니다."라고 말합니다.
CPE 연결 끊기
*Mar 6 13:30:35.378: Vi1 LCP: I TERMREQ [Open] id 1 len 4
*Mar 6 13:30:35.394: Vi1 IPCP: Event[DOWN] State[Open to Starting]
*Mar 6 13:30:35.394: Vi1 IPCP: Event[CLOSE] State[Starting to Initial]
*Mar 6 13:30:35.398: Vi1 LCP: O TERMACK [Open] id 1 len 4
*Mar 6 13:30:35.398: Vi1 LCP: Event[Receive TermReq] State[Open to
Stopping]
*Mar 6 13:30:35.398: Vi1 PPP DISC: Received LCP TERMREQ from peer
*Mar 6 13:30:35.402: Vi1 PPP: Phase is TERMINATING
*Mar 6 13:30:35.426: Di1 IPCP: Remove route to 172.16.2.1
*Mar 6 13:30:35.650: PPPoE 1544: I PADT R:ca03.0fa0.0008
L:ca0a.13a4.0008 Fa0/0
*Mar 6 13:30:35.650: PPPoE : Shutting down client session
*Mar 6 13:30:35.650: [0]PPPoE 1544: O PADT R:ca03.0fa0.0008
L:ca0a.13a4.0008 Fa0/0
*Mar 6 13:30:35.650: PPPoE: Failed to add PPPoE switching subblock
*Mar 6 13:30:35.650: %DIALER-6-UNBIND: Interface Vi1 unbound from
profile Di1
*Mar 6 13:30:35.650: Vi1 PPP: Block vaccess from being freed [0x10]
*Mar 6 13:30:35.650: Vi1
CPE-A#
LCP: Event[DOWN] State[Stopping to Starting]
*Mar 6 13:30:35.650: Vi1 PPP: Unlocked by [0x10] Still Locked by [0x0]
*Mar 6 13:30:35.650: Vi1 PPP: Free previously blocked vaccess
*Mar 6 13:30:35.650: Vi1 PPP: Phase is DOWN
*Mar 6 13:30:35.654: %LINK-3-UPDOWN: Interface Virtual-Access1, changed
state to down
*Mar 6 13:30:35.658: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Virtual-Access1, changed state to down
*Mar 6 13:30:35.682: PPPoE: Unexpected Event!. PPPoE switching
Subblockdestroy called
LNS 연결 끊기
EDGE01#
L2X_ADJ: Vi2.1:adj notify change, event 4
L2X_ADJ: Vi2.1:midchain unstacking IP 0.0.0.0
L2X_ADJ: Vi2.1:adj notify change, event 8
*Mar 6 14:39:33.227: VPDN Vi2.1 disconnect (AAA) IETF: 8/port-error
Ascend: 41/TCP Foreign Host Close
*Mar 6 14:39:33.235: VPDN Vi2.1 vpdn shutdown session, result=2, error=6,
vendor_err=0, syslog_error_code=23, syslog_key_type=1
*Mar 6 14:39:33.243: VPDN Vi2.1 VPDN/AAA: accounting stop sent
*Mar 6 14:39:33.255: VPDN Vi2.1 Unbinding session from idb
*Mar 6 14:39:33.263: Vi2.1 VPDN: Resetting interface
L2X_ADJ: Vi2.1:midchain unstacking IP 0.0.0.0
L2X_ADJ: Vi2.1:removed ctx
LNS 재 연결
*Mar 6 13:30:58.604: VPDN Received L2TUN socket message <xCRQ - Session
Incoming>
*Mar 6 13:30:58.608: VPDN Tnl/Sn 41793 56421 L2TUN socket session accept
requested
*Mar 6 13:30:58.612: VPDN Tnl/Sn 41793 56421 Setting up dataplane for
L2-L2, no idb
*Mar 6 13:30:58.880: VPDN Received L2TUN socket message <xCCN - Session
Connected>
*Mar 6 13:30:58.892: VPDN uid:330 VPDN session up
L2X_ADJ: Vi2.1:midchain adj reqd for ip 0.0.0.0, cid 0
L2X_ADJ: Vi2.1:midchain adj reqd for ip 0.0.0.0, cid 0
*Mar 6 13:30:59.112: VPDN uid:330 Virtual interface created for
cpe-a@isp.com
bandwidth 100000 Kbps
CPE 재 연결
*Mar 6 13:30:55.674: Sending PADI: Interface = FastEthernet0/0
*Mar 6 13:30:55.686: PPPoE 0: I PADO R:ca03.0fa0.0008 L:ca0a.13a4.0008
Fa0/0
CPE-A#
*Mar 6 13:30:57.722: PPPOE: we've got our pado and the pado timer went off
*Mar 6 13:30:57.722: OUT PADR from PPPoE Session
*Mar 6 13:30:57.822: PPPoE 1545: I PADS R:ca03.0fa0.0008 L:ca0a.13a4.0008
Fa0/0
*Mar 6 13:30:57.822: IN PADS from PPPoE Session
*Mar 6 13:30:57.838: %DIALER-6-BIND: Interface Vi1 bound to profile Di1
*Mar 6 13:30:57.842: PPPoE: Virtual Access interface obtained.
*Mar 6 13:30:57.842: PPPoE : encap string prepared
*Mar 6 13:30:57.842: [0]PPPoE 1545: data path set to PPPoE Client
*Mar 6 13:30:57.854: %LINK-3-UPDOWN: Interface Virtual-Access1, changed
state to up
*Mar 6 13:30:57.854: Vi1 PPP: Sending cstate UP notification
*Mar 6 13:30:57.858: Vi1 PPP: Processing CstateUp message
*Mar 6 13:30:57.906: PPP: Alloc Context [66CDB580]
*Mar 6 13:30:57.906: ppp622 PPP: Phase is ESTABLISHING
*Mar 6 13:30:57.910: Vi1 PPP: Using dialer call direction
*Mar 6 13:30:57.910: Vi1 PPP: Treating connection as a callout
*Mar 6 13:30:57.910: Vi1 PPP:
CPE-A#
Session handle[F400069A] Session id[622]
*Mar 6 13:30:57.914: Vi1 LCP: Event[OPEN] State[Initial to Starting]
*Mar 6 13:30:57.914: Vi1 PPP: No remote authentication for call-out
*Mar 6 13:30:57.918: Vi1 LCP: O CONFREQ [Starting] id 1 len 10
*Mar 6 13:30:57.918: Vi1 LCP: MagicNumber 0x191D3E68 (0x0506191D3E68)
*Mar 6 13:30:57.922: Vi1 LCP: Event[UP] State[Starting to REQsent]
*Mar 6 13:30:58.042: Vi1 LCP: I CONFREQ [REQsent] id 1 len 18
*Mar 6 13:30:58.046: Vi1 LCP: MRU 1492 (0x010405D4)
*Mar 6 13:30:58.046: Vi1 LCP: AuthProto PAP (0x0304C023)
*Mar 6 13:30:58.046: Vi1 LCP: MagicNumber 0x2686484A (0x05062686484A)
*Mar 6 13:30:58.050: Vi1 LCP: O CONFNAK [REQsent] id 1 len 8
*Mar 6 13:30:58.050: Vi1 LCP: MRU 1500 (0x010405DC)
*Mar 6 13:30:58.050: Vi1 LCP: Event[Receive ConfReq-] State[REQsent to
REQsent]
*Mar 6 13:30:58.106: Vi1 LCP: I CONFACK [REQsent] id 1 len 10
*Mar 6 13:30:58.106: Vi1 LCP: MagicNumber 0x191D3E68 (0x0506191D3E68)
*Mar 6
CPE-A#13:30:58.106: Vi1 LCP: Event[Receive ConfAck] State[REQsent to
ACKrcvd]
*Mar 6 13:30:58.110: Vi1 LCP: I CONFREQ [ACKrcvd] id 2 len 18
*Mar 6 13:30:58.110: Vi1 LCP: MRU 1500 (0x010405DC)
*Mar 6 13:30:58.110: Vi1 LCP: AuthProto PAP (0x0304C023)
*Mar 6 13:30:58.110: Vi1 LCP: MagicNumber 0x2686484A (0x05062686484A)
*Mar 6 13:30:58.114: Vi1 LCP: O CONFACK [ACKrcvd] id 2 len 18
*Mar 6 13:30:58.114: Vi1 LCP: MRU 1500 (0x010405DC)
*Mar 6 13:30:58.114: Vi1 LCP: AuthProto PAP (0x0304C023)
*Mar 6 13:30:58.114: Vi1 LCP: MagicNumber 0x2686484A (0x05062686484A)
*Mar 6 13:30:58.118: Vi1 LCP: Event[Receive ConfReq+] State[ACKrcvd to
Open]
*Mar 6 13:30:58.122: Vi1 PPP: No authorization without authentication
*Mar 6 13:30:58.126: Vi1 PPP: Phase is AUTHENTICATING, by the peer
*Mar 6 13:30:58.126: Vi1 PAP: Using hostname from interface PAP
*Mar 6 13:30:58.126: Vi1 PAP: Using password from interface PAP
*Mar 6 13:30:58.126: Vi1 PAP: O AUTH-REQ id 1 len 26 from
CPE-A# "cpe-a@isp.com"
*Mar 6 13:30:58.130: Vi1 LCP: State is Open
*Mar 6 13:30:59.390: Vi1 PAP: I AUTH-ACK id 1 len 5
*Mar 6 13:30:59.394: Vi1 PPP: Phase is FORWARDING, Attempting Forward
*Mar 6 13:30:59.394: Vi1 PPP: Queue IPCP code[1] id[1]
*Mar 6 13:30:59.422: Vi1 PPP: Phase is ESTABLISHING, Finish LCP
*Mar 6 13:30:59.426: Vi1 PPP: Phase is UP
*Mar 6 13:30:59.426: Vi1 IPCP: Protocol configured, start CP.
state[Initial]
*Mar 6 13:30:59.426: Vi1 IPCP: Event[OPEN] State[Initial to Starting]
*Mar 6 13:30:59.430: Vi1 IPCP: O CONFREQ [Starting] id 1 len 10
*Mar 6 13:30:59.430: Vi1 IPCP: Address 0.0.0.0 (0x030600000000)
*Mar 6 13:30:59.434: Vi1 IPCP: Event[UP] State[Starting to REQsent]
*Mar 6 13:30:59.434: Vi1 PPP: Process pending ncp packets
*Mar 6 13:30:59.434: Vi1 IPCP: Redirect packet to Vi1
*Mar 6 13:30:59.434: Vi1 IPCP: I CONFREQ [REQsent] id 1 len 10
*Mar 6 13:30:59.438: Vi1 IPCP: Address 172.16.2.1 (0x0306AC100201)
*Mar 6 13:30:59.442: Vi1 IPCP:
CPE-A# O CONFACK [REQsent] id 1 len 10
*Mar 6 13:30:59.442: Vi1 IPCP: Address 172.16.2.1 (0x0306AC100201)
*Mar 6 13:30:59.442: Vi1 IPCP: Event[Receive ConfReq+] State[REQsent to
ACKsent]
*Mar 6 13:30:59.446: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Virtual-Access1, changed state to up
*Mar 6 13:30:59.602: Vi1 IPCP: I CONFNAK [ACKsent] id 1 len 10
*Mar 6 13:30:59.602: Vi1 IPCP: Address 172.16.2.19 (0x0306AC100213)
*Mar 6 13:30:59.606: Vi1 IPCP: O CONFREQ [ACKsent] id 2 len 10
*Mar 6 13:30:59.606: Vi1 IPCP: Address 172.16.2.19 (0x0306AC100213)
*Mar 6 13:30:59.606: Vi1 IPCP: Event[Receive ConfNak/Rej] State[ACKsent to
ACKsent]
*Mar 6 13:30:59.826: Vi1 IPCP: I CONFACK [ACKsent] id 2 len 10
*Mar 6 13:30:59.826: Vi1 IPCP: Address 172.16.2.19 (0x0306AC100213)
*Mar 6 13:30:59.826: Vi1 IPCP: Event[Receive ConfAck] State[ACKsent to
Open]
*Mar 6 13:30:59.842: Vi1 IPCP: State is Open
*Mar 6 13:30:59.846: Di1 IPCP: Install negotiated IP interface address
172.16.2.19
*Mar 6 13:30:59.854: Di1 IPCP: Install route to 172.16.2.1
CPE-A#
관련 구성 ...
LAC :
no aaa new-model
!
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
vpdn enable
vpdn search-order domain
!
vpdn-group PPP-Customers
request-dialin
protocol l2tp
domain isp.com
initiate-to ip 10.27.200.2
local name LAC
l2tp tunnel password 0 tunnel123
!
!
redundancy
!
!
ip tcp synwait-time 5
!
!
bba-group pppoe isp
virtual-template 1
!
!
interface Loopback0
description Management Loopback
ip address 10.27.100.1 255.255.255.255
!
!
interface FastEthernet0/0
description PtP to CPE
no ip address
duplex auto
speed auto
pppoe enable group isp
!
!
!
interface FastEthernet1/0
description PtP LAC-EDGE01
ip address 10.27.200.1 255.255.255.252
duplex full
speed 100
!
!
interface Virtual-Template1
ip unnumbered Loopback0
ppp authentication pap chap
!
!
router bgp 100
no synchronization
bgp router-id 10.27.100.1
bgp log-neighbor-changes
neighbor 10.27.200.2 remote-as 165535
neighbor 10.27.200.2 password BGP123
no auto-summary
!
LNS :
EDGE01 # sh 디버그
VPN :
VPDN 이벤트 디버깅이 켜져 있습니다
aaa new-model
!
!
aaa authentication ppp default local
aaa authentication ppp PPPNetBlock local
!
!
!
!
!
aaa session-id common
!
!
!
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
vpdn enable
!
vpdn-group PPP-Customers
accept-dialin
protocol l2tp
virtual-template 1
terminate-from hostname LAC
local name LNS
no l2tp tunnel authentication
l2tp tunnel password 0 tunnel123
l2tp tunnel timeout no-session 15
!
!
!
!
!
username cpe-a@isp.com password 0 cpe123
!
redundancy
!
!
ip tcp synwait-time 5
!
!
interface Loopback0
description Management Loopback
ip address 172.16.3.1 255.255.255.255
!
!
interface Loopback1
description PPP Customers GW Loopback
ip address 172.16.2.1 255.255.255.255
!
!
interface FastEthernet0/0
description PtP EDGE01-LAC
ip address 10.27.200.2 255.255.255.252
duplex full
speed 100
!
!
interface Virtual-Template1
description PPP Customers Template
ip unnumbered Loopback1
peer default ip address pool PPPNetBlock
ppp authentication pap chap
!
!
! For this lab, I am redistributing CPE IPs into OSPF instead of BGP.
router ospf 1
router-id 172.16.3.1
log-adjacency-changes
auto-cost reference-bandwidth 512000
redistribute connected subnets
network 172.16.3.0 0.0.0.255 area 0
default-information originate
!
! BGP with upstream router, which is also the LAC.
! BGP session is kind of irrelevant, though.
router bgp 165535
no synchronization
bgp router-id 10.27.200.2
bgp log-neighbor-changes
neighbor 10.27.200.1 remote-as 100
neighbor 10.27.200.1 password BGP123
no auto-summary
!
ip local pool PPPNetBlock 172.16.2.2 172.16.2.254
ip forward-protocol nd
CPE :
CPE-A # sh 디버그
PPP :
PPP 인증 디버깅이 켜져 있습니다
PPP 프로토콜 오류 디버깅이 켜져 있습니다
PPP 프로토콜 협상 디버깅이 켜져 있습니다.
PPPoE :
PPPoE 프로토콜 이벤트 디버깅이 켜져 있습니다
PPPoE 프로토콜 오류 디버깅이 켜져 있습니다
no aaa new-model
!
ip source-route
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
no ipv6 cef
!
multilink bundle-name authenticated
!
redundancy
!
!
ip tcp synwait-time 5
!
interface FastEthernet0/0
description DSL
no ip address
duplex auto
speed auto
pppoe enable
pppoe-client dial-pool-number 1
!
!
interface Dialer1
description DSL Dialer
ip address negotiated
ip mtu 1492
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
ppp authentication chap callin
ppp chap hostname cpe-a@isp.com
ppp chap password 0 cpe123
ppp pap sent-username cpe-a@isp.com password 0 cpe123
no cdp enable
!
!
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!