配置ISE 2.0 TrustSec SXP监听器和发言人

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已更新: 2015 年 12 月 1 日
文档 ID:200278

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简介

本文档介绍如何配置思科身份服务引擎(ISE) 2.0版在侦听器和扬声器模式下支持TrustSec SGT交换协议(SXP)的功能并对其进行故障排除。

先决条件

要求

Cisco 建议您了解以下主题：

  • Cisco Catalyst交换机配置
  • 身份服务引擎(ISE)和TrustSec服务

使用的组件

本文档中的信息基于以下软件版本：

  • 配备软件IOS-XE 3.7.2及更高版本的Cisco Catalyst 3850交换机
  • 思科ISE版本2.0及更高版本

配置

网络图

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-00.jpeg

流量传输

  • 3850-2是10.0.0.100的802.1x身份验证器- ISE返回安全组标记(SGT) 16 (IT)以成功进行身份验证
  • 3850-2交换机了解请求方ip地址（ip设备跟踪）并使用SXP协议将映射信息(IP-SGT)发送到ISE
  • 3850-1是10.0.0.1的802.1x身份验证器- ISE返回SGT标记9 （营销）以成功进行身份验证
  • 3850-1从ISE接收SXP映射信息（10.0.0.100是SGT 16），然后从ISE下载策略
  • 从10.0.0.100发送到10.0.0.1的流量由3850-2（未下载特定策略）转发到3850-1，即执行器命中策略IT (16) ->营销(9)

请注意，交换机之间的链路不是cts链路，因此交换机上的所有远程映射都是通过SXP协议安装的。

注意：并非所有交换机都有允许根据收到的SXP映射通过从ISE接收的策略进行编程的硬件。有关验证信息，请始终参阅最新的TrustSec兼容性列表或联系思科系统公司。

配置

有关基本TrustSec配置的详细信息，请参阅参考一节中的文章。

交换机3850-1

交换机通过SGT分配终止802.1x会话，同时作为面向ISE的SXP发言人。

aaa authentication dot1x default group ISE_mgarcarz
aaa authorization network default group ISE_mgarcarz 
aaa authorization network ISE_mgarcarz group ISE_mgarcarz 
aaa accounting dot1x default start-stop group ISE_mgarcarz
aaa accounting update newinfo

radius server ISE_mgarcarz
 address ipv4 10.48.17.235 auth-port 1645 acct-port 1646
 pac key cisco

aaa group server radius ISE_mgarcarz
 server name ISE_mgarcarz

interface GigabitEthernet1/0/3
 switchport mode trunk

interface GigabitEthernet1/0/5
 description mgarcarz
 switchport access vlan 100
 switchport mode access
 ip flow monitor F_MON input
 ip flow monitor F_MON output
 authentication order dot1x mab
 authentication priority dot1x mab
 authentication port-control auto
 mab
 dot1x pae authenticator

cts authorization list ISE_mgarcarz
cts role-based enforcement
cts role-based enforcement vlan-list 1-4094
cts sxp enable
cts sxp default password cisco
cts sxp connection peer 10.48.17.235 password default mode local listener hold-time 0

交换机3850-2

交换机通过SGT分配终止802.1x会话，同时作为SXP侦听程序从ISE获取映射。

aaa authentication dot1x default group ISE_mgarcarz
aaa authorization network default group ISE_mgarcarz 
aaa authorization network ISE_mgarcarz group ISE_mgarcarz 
aaa accounting dot1x default start-stop group ISE_mgarcarz
aaa accounting update newinfo

radius server ISE_mgarcarz
 address ipv4 10.48.17.235 auth-port 1645 acct-port 1646
 pac key cisco

aaa group server radius ISE_mgarcarz
 server name ISE_mgarcarz

interface GigabitEthernet1/0/3
 switchport mode trunk

interface GigabitEthernet1/0/5
 description mgarcarz
 switchport access vlan 100
 switchport mode access
 authentication order dot1x mab
 authentication priority dot1x mab
 authentication port-control auto
 mab
 dot1x pae authenticator

cts authorization list ISE_mgarcarz
cts role-based enforcement
cts role-based enforcement vlan-list 1-4094
cts sxp enable
cts sxp default password cisco
cts sxp connection peer 10.48.17.235 password default mode local speaker hold-time 0

ISE

步骤1.网络接入设备

导航到工作中心(Work Centers) >设备管理(Device Administration) >网络资源(Network Resources)，使用共享密钥cisco和TrustSec密码Krakow123添加两台交换机。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-01.png

第二步：安全组

要添加面向IT和市场营销的SGT，请导航到工作中心> TrustSec >组件>安全组。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-02.png

步骤3.安全组ACL

要添加安全组ACL，请导航到工作中心> TrustSec >组件>安全组ACL。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-03.png

仅允许ICMP流量。

第四步：TrustSec策略

要添加控制从IT到营销的流量的策略，请导航到工作中心> TrustSec >组件>出口策略>矩阵。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-04.png

设置默认条目catch all规则以拒绝所有流量。

第五步：SXP设备

要为相应交换机配置SXP侦听器和扬声器，请导航到工作中心> TrustSec > SXP设备。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-05.png

使用口令cisco（或为交换机上的sxp配置的任何其它口令）。

第六步：授权策略

确保授权策略返回每个用户的正确SGT标记，导航到策略>授权。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-06.png

验证

步骤1:交换机加入CTS的ISE

从每台交换机提供TrustSec凭证（在ISE/第1步中配置）以获取PAC。

KSEC-3850-2#cts credentials id KSEC-3850-2 password Krakow123
CTS device ID and password have been inserted in the local keystore. Please make sure that the same ID and password are configured in the server database.

确保已下载PAC。

KSEC-3850-2#show cts pacs 
  AID: 65D55BAF222BBC73362A7810A04A005B
  PAC-Info:
    PAC-type = Cisco Trustsec
    AID: 65D55BAF222BBC73362A7810A04A005B
    I-ID: KSEC-3850-2
    A-ID-Info: Identity Services Engine
    Credential Lifetime: 20:42:37 UTC Nov 13 2015
  PAC-Opaque: 000200B8000300010004001065D55BAF222BBC73362A7810A04A005B0006009C00030100B26D8DDC125B6595067D64F917DA624C0000001355CB2E1C00093A800E567155E0DE76419D2F3B97D890F34F109C4C42F586B29050CEC7B441E0CA60FC6684D4F6E8263FA2623A6E450927815A140CD3B9D68988E95D8C1E65544E222E187C647B9F7F3F230F6DB4F80F3C201ACD623B309077E27688EDF7704740A1CD3F18CE8485788054C19909083ED303BB49A6975AC0395D41E1227B
  Refresh timer is set for 12w4d

并刷新环境策略。

KSEC-3850-2#show cts environment-data 
CTS Environment Data
====================
Current state = COMPLETE
Last status = Successful
Local Device SGT:
  SGT tag = 0-00:Unknown
Server List Info:
Installed list: CTSServerList1-0001, 1 server(s):
 *Server: 10.48.17.235, port 1812, A-ID 65D55BAF222BBC73362A7810A04A005B
          Status = ALIVE
          auto-test = FALSE, keywrap-enable = FALSE, idle-time = 60 mins, deadtime = 20 secs
Multicast Group SGT Table:
Security Group Name Table:
    0-00:Unknown
    6-00:SGT_Guest
    9-00:SGT_Marketing   
    15-00:SGT_BYOD
    16-00:SGT_IT
    255-00:SGT_Quarantine
Environment Data Lifetime = 86400 secs 
Last update time = 20:47:04 UTC Sat Aug 15 2015
Env-data expires in   0:08:09:13 (dd:hr:mm:sec)
Env-data refreshes in 0:08:09:13 (dd:hr:mm:sec)
Cache data applied           = NONE
State Machine is running

对3850-1重复相同的过程

第2步：802.1x会话

在IT用户通过身份验证后，将分配正确的标记。

KSEC-3850-2#show authentication sessions interface g1/0/5 details 
            Interface:  GigabitEthernet1/0/5
               IIF-ID:  0x107E700000000C4 
          MAC Address:  0050.b611.ed31
         IPv6 Address:  Unknown
         IPv4 Address:  10.0.0.100
            User-Name:  cisco
               Status:  Authorized
               Domain:  DATA
       Oper host mode:  single-host
     Oper control dir:  both
      Session timeout:  N/A
    Common Session ID:  0A3E946D00000FF214D18E36
      Acct Session ID:  0x00000FDC
               Handle:  0xA4000020
       Current Policy:  POLICY_Gi1/0/5

Local Policies:
        Service Template: DEFAULT_LINKSEC_POLICY_SHOULD_SECURE (priority 150)
      Security Policy:  Should Secure
      Security Status:  Link Unsecure

Server Policies:
            SGT Value:  16 

Method status list:
       Method           State
       dot1x            Authc Success

映射安装在本地SGT-IP表中。

KSEC-3850-2#show cts role-based sgt-map all
Active IPv4-SGT Bindings Information

IP Address              SGT     Source
============================================
10.0.0.100              16      LOCAL

第三步：SXP扬声器

3850-2将映射发送到cts sxp的ISE和交换机调试。

KSEC-3850-2(config)#do show debug 
CTS:
  CTS SXP message debugging is on

*Aug 16 12:48:30.173: CTS-SXP-MSG:trp_send_msg <1>, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.173: CTS-SXP-MSG:trp_socket_write fd<1>, cdbp->ph_sock_pending<1>, <10.48.17.235, 10.62.148.109> 
*Aug 16 12:48:30.226: CTS-SXP-MSG:trp_process_read_sock <1>, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.226: CTS-SXP-MSG:trp_process_read_sock socket_recv result:-1 errno:11; <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.226: CTS-SXP-MSG:trp_process_read_sock socket_conn is accepted; <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.226: CTS-SXP-MSG:trp_socket_write fd<1>, <10.48.17.235, 10.62.148.109> 
*Aug 16 12:48:30.226: CTS-SXP-MSG:trp_socket_write freeing tx_msgq_entry, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.227: CTS-SXP-MSG:after socket_send, wlen=28, slen=0, tot_len=28, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.227: CTS-SXP-MSG:trp_socket_write freeing tx_buf, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.227: CTS-SXP-MSG:trp_socket_read <1>, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.227: CTS-SXP-MSG:trp_socket_read readlen = -1; errno = 11, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.278: CTS-SXP-MSG:trp_process_read_sock <1>, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.278: CTS-SXP-MSG:trp_socket_read <1>, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.278: CTS-SXP-MSG:RCVD peer 10.48.17.235 readlen:32, datalen:0 remain:4096 bufp = 
*Aug 16 12:48:30.278: CTS-SXP-MSG:sxp_handle_rx_msg_v2 <1>, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.279: CTS-SXP-MSG:imu_sxp_conn_cr <1>, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.279: CTS-SXP-MSG:wrt_sxp_opcode_info_v4 cdbp 0x3D541160
*Aug 16 12:48:30.279: CTS-SXP-MSG:trp_send_msg <1>, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.279: CTS-SXP-MSG:trp_socket_write fd<1>, <10.48.17.235, 10.62.148.109> 
*Aug 16 12:48:30.279: CTS-SXP-MSG:trp_socket_write freeing tx_msgq_entry, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.279: CTS-SXP-MSG:after socket_send, wlen=28, slen=0, tot_len=28, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.279: CTS-SXP-MSG:trp_socket_write freeing tx_buf, <10.48.17.235, 10.62.148.109>
*Aug 16 12:48:30.280: CTS-SXP-MSG:trp_socket_read readlen = 32; errno = 11, <10.48.17.235, 10.62.148.109>

ISE报告(sxp_appserver/sxp.log)

2015-08-16 14:44:07,029 INFO  [nioEventLoopGroup-2-3] opendaylight.sxp.core.behavior.Strategy:473 - [ISE:10.48.17.235][10.48.17.235:21121/10.62.148.109:64999][O|Lv4/Sv4 192.168.77.2] PURGEALL processing
2015-08-16 14:44:07,029 WARN  [nioEventLoopGroup-2-3] opendaylight.sxp.core.handler.MessageDecoder:173 - [ISE:10.48.17.235][10.48.17.235:21121/10.62.148.109:64999] Channel inactivation
2015-08-16 14:44:07,029 INFO  [pool-3-thread-1] sxp.util.database.spi.MasterDatabaseProvider:721 - SXP_PERF:BINDINGS_PER_SXP_UPDATE_MESSAGE(CHUNK)=1, onlyChanged=true
2015-08-16 14:44:07,030 INFO  [pool-3-thread-1] sxp.util.database.spi.MasterDatabaseProvider:725 - SXP_PERF:NUM_OF_CHUNKS=1, onlyChanged=true
2015-08-16 14:44:07,030 INFO  [pool-3-thread-9] opendaylight.sxp.core.service.UpdateExportTask:93 - SXP_PERF:SEND_UPDATE_BUFFER_SIZE=16
2015-08-16 14:44:07,030 INFO  [pool-3-thread-9] opendaylight.sxp.core.service.UpdateExportTask:119 - SENT_UPDATE to [ISE:10.48.17.235][10.48.17.235:57719/10.62.148.108:64999][O|Sv4]
2015-08-16 14:44:07,030 INFO  [pool-3-thread-9] opendaylight.sxp.core.service.UpdateExportTask:140 - SENT_UPDATE SUCCESSFUL to [ISE:10.48.17.235][10.48.17.235:57719/10.62.148.108:64999][O|Sv4]:false
2015-08-16 14:44:07,030 INFO  [pool-3-thread-1] opendaylight.sxp.core.service.BindingDispatcher:198 - SXP_PERF:MDB_PARTITON_AND_SXP_DISPATCH:DURATION=1 milliseconds, NUM_CONNECTIONS=1
2015-08-16 14:44:07,031 INFO  [pool-3-thread-1] sxp.util.database.spi.MasterDatabaseProvider:725 - SXP_PERF:NUM_OF_CHUNKS=0, onlyChanged=true
2015-08-16 14:44:12,534 INFO  [nioEventLoopGroup-2-4] opendaylight.sxp.core.behavior.Strategy:232 - [ISE:10.48.17.235][10.48.17.235:64999/10.62.148.109:1035][X|Lv4/Sv4 192.168.77.2] received Message  Open
2015-08-16 14:44:12,535 INFO  [nioEventLoopGroup-2-4] opendaylight.sxp.core.behavior.Strategy:358 - [ISE:10.48.17.235][10.48.17.235:64999/10.62.148.109:1035][O|Lv4/Sv4 192.168.77.2] Sent RESP 0 0 0 32 0 0 0 2 | 0 0 0 4 0 0 0 2 80 6 6 3 0 2 0 1 0 80 7 4 0 120 0 180 
2015-08-16 14:44:12,585 INFO  [nioEventLoopGroup-2-4] opendaylight.sxp.core.behavior.Strategy:451 - [ISE:10.48.17.235][10.48.17.235:64999/10.62.148.109:1035][O|Lv4/Sv4 192.168.77.2] received Message  Update
2015-08-16 14:44:12,586 INFO  [pool-3-thread-2] opendaylight.sxp.core.service.SimpleBindingHandler:663 - PERF_SXP_PROCESS_UPDATE from [ISE:10.48.17.235][10.48.17.235:64999/10.62.148.109:1035][O|Lv4/Sv4 192.168.77.2]
2015-08-16 14:44:12,586 INFO  [pool-3-thread-2] opendaylight.sxp.core.service.SimpleBindingHandler:666 - PERF_SXP_PROCESS_UPDATE_DONE from [ISE:10.48.17.235][10.48.17.235:64999/10.62.148.109:1035][O|Lv4/Sv4 192.168.77.2]
2015-08-16 14:44:12,586 INFO  [pool-3-thread-1] sxp.util.database.spi.MasterDatabaseProvider:721 - SXP_PERF:BINDINGS_PER_SXP_UPDATE_MESSAGE(CHUNK)=1, onlyChanged=true
2015-08-16 14:44:12,587 INFO  [pool-3-thread-1] sxp.util.database.spi.MasterDatabaseProvider:725 - SXP_PERF:NUM_OF_CHUNKS=1, onlyChanged=true
2015-08-16 14:44:12,587 INFO  [pool-3-thread-11] opendaylight.sxp.core.service.UpdateExportTask:93 - SXP_PERF:SEND_UPDATE_BUFFER_SIZE=32
2015-08-16 14:44:12,587 INFO  [pool-3-thread-11] opendaylight.sxp.core.service.UpdateExportTask:119 - SENT_UPDATE to [ISE:10.48.17.235][10.48.17.235:57719/10.62.148.108:64999][O|Sv4]
2015-08-16 14:44:12,587 INFO  [pool-3-thread-11] opendaylight.sxp.core.service.UpdateExportTask:140 - SENT_UPDATE SUCCESSFUL to [ISE:10.48.17.235][10.48.17.235:57719/10.62.148.108:64999][O|Sv4]:false
2015-08-16 14:44:12,587 INFO  [pool-3-thread-1] opendaylight.sxp.core.service.BindingDispatcher:198 - SXP_PERF:MDB_PARTITON_AND_SXP_DISPATCH:DURATION=1 milliseconds, NUM_CONNECTIONS=1

并通过GUI显示所有映射（包括从3850-2接收的10.0.0.100映射），如此图中所示。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-07.png

192.168.77.2是3850-2上SXP连接的标识符（定义的最高ip地址）。

KSEC-3850-2#show ip interface brief 
Interface              IP-Address      OK? Method Status                Protocol
GigabitEthernet0/0     unassigned      YES unset  down                  down    
Vlan1                  unassigned      YES NVRAM  administratively down down    
Vlan100                10.0.0.2        YES manual up                    up      
Vlan480                10.62.148.109   YES NVRAM  up                    up      
Vlan613                unassigned      YES NVRAM  administratively down down    
Vlan666                192.168.66.2    YES NVRAM  down                  down    
Vlan777                192.168.77.2    YES NVRAM  down                  down   

第四步：SXP侦听程序

然后，ISE将该映射重新发送到3850-1，进行交换机调试。

*Aug 16 05:42:54.199: CTS-SXP-MSG:trp_send_msg <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.199: CTS-SXP-MSG:trp_socket_write fd<1>, cdbp->ph_sock_pending<1>, <10.48.17.235, 10.62.148.108> 
*Aug 16 05:42:54.248: CTS-SXP-MSG:trp_process_read_sock <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.248: CTS-SXP-MSG:trp_process_read_sock socket_recv result:-1 errno:11; <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.248: CTS-SXP-MSG:trp_process_read_sock socket_conn is accepted; <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.248: CTS-SXP-MSG:trp_socket_write fd<1>, <10.48.17.235, 10.62.148.108> 
*Aug 16 05:42:54.248: CTS-SXP-MSG:trp_socket_write freeing tx_msgq_entry, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.248: CTS-SXP-MSG:after socket_send, wlen=32, slen=0, tot_len=32, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.248: CTS-SXP-MSG:trp_socket_write freeing tx_buf, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.249: CTS-SXP-MSG:trp_socket_read <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.249: CTS-SXP-MSG:trp_socket_read readlen = -1; errno = 11, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.300: CTS-SXP-MSG:trp_process_read_sock <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.300: CTS-SXP-MSG:trp_socket_read <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.300: CTS-SXP-MSG:RCVD peer 10.48.17.235 readlen:28, datalen:0 remain:4096 bufp = 
*Aug 16 05:42:54.301: CTS-SXP-MSG:sxp_handle_rx_msg_v2 <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.301: CTS-SXP-MSG:imu_sxp_conn_cr ci<1> cdbp->ph_conn_state<2>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.301: CTS-SXP-MSG:trp_socket_read readlen = 28; errno = 11, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.301: CTS-SXP-MSG:trp_process_read_sock <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.302: CTS-SXP-MSG:trp_socket_read <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.302: CTS-SXP-MSG:RCVD peer 10.48.17.235 readlen:52, datalen:0 remain:4096 bufp = 
*Aug 16 05:42:54.302: CTS-SXP-MSG:sxp_handle_rx_msg_v2 <1>, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.302: CTS-SXP-MSG:sxp_recv_update_v4 <1> peer ip: 10.48.17.235
*Aug 16 05:42:54.302: CTS-SXP-MSG:1. msg type:3, total len:52,  payl len:44, opc_ptr:0x3DFC7308, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.302: CTS-SXP-MSG:1. msg type:3, total len:52,  payl len:37, opc_ptr:0x3DFC730F, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.302: CTS-SXP-MSG:1. msg type:3, total len:52,  payl len:32, opc_ptr:0x3DFC7314, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.302: CTS-SXP-MSG:1. msg type:3, total len:52,  payl len:24, opc_ptr:0x3DFC731C, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.302: CTS-SXP-MSG:1. msg type:3, total len:52,  payl len:13, opc_ptr:0x3DFC7327, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.302: CTS-SXP-MSG:1. msg type:3, total len:52,  payl len:8, opc_ptr:0x3DFC732C, <10.48.17.235, 10.62.148.108>
*Aug 16 05:42:54.303: CTS-SXP-MSG:1. msg type:3, total len:52,  payl len:0, opc_ptr:0x3DFC7334, <10.48.17.235, 10.62.148.108>

从ISE捕获的流向3850-1的数据包确认正在发送SXP映射。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-08.jpeg

Wireshark使用标准SMPP解码器。要检查负载，请执行以下操作：

“c0 a8 01 cb”(192.168.1.203)为10 (SGT = 16)

“0a 00 00 64” (10.0.0.100)为10 (SGT = 16)

3850-1安装从ISE接收的所有映射。

KSEC-3850-1# show cts sxp sgt-map 
SXP Node ID(generated):0xC0A84D01(192.168.77.1)
IP-SGT Mappings as follows:
IPv4,SGT: <10.0.0.100 , 16:SGT_IT>
source  : SXP; 
Peer IP : 10.48.17.235; 
Ins Num : 2; 
Status  : Active; 
Seq Num : 439 
Peer Seq: 0A3011EB,C0A84D02, 
IPv4,SGT: <192.168.1.203 , 16:SGT_IT>
source  : SXP; 
Peer IP : 10.48.17.235; 
Ins Num : 6; 
Status  : Active; 
Seq Num : 21 
Peer Seq: 0A3011EB, 
Total number of IP-SGT Mappings: 2


KSEC-3850-1# show cts role-based sgt-map all
Active IPv4-SGT Bindings Information

IP Address              SGT     Source
============================================
10.0.0.100              16      SXP
192.168.1.203           16      SXP

IP-SGT Active Bindings Summary
============================================
Total number of CLI      bindings = 1
Total number of SXP      bindings = 2
Total number of active   bindings = 3

第五步：策略下载和实施

 从ISE下载正确的策略。（使用SGT 16的矩阵行）

KSEC-3850-1#show cts role-based permissions 
IPv4 Role-based permissions default:
        Permit IP-00
IPv4 Role-based permissions from group 16:SGT_IT to group 9:SGT_Marketing:
        ICMP-10
        Deny IP-00
RBACL Monitor All for Dynamic Policies : FALSE
RBACL Monitor All for Configured Policies : FALSE

允许从10.0.0.100 (SGT IT)到10.0.0.1 （SGT营销）的ICMP流量，计数增加。

KSEC-3850-1#show cts role-based counters from 16
Role-based IPv4 counters
#Hardware counters are not available for specific SGT/DGT
#Use this command without arguments to see hardware counters
From    To      SW-Denied       SW-Permitted   
16      9       0               0               11              0

当尝试使用telnet连接失败时，丢弃计数器增加。

KSEC-3850-1#show cts role-based counters from 16
Role-based IPv4 counters
#Hardware counters are not available for specific SGT/DGT
#Use this command without arguments to see hardware counters
From    To      SW-Denied       SW-Permitted   
16      9       3               0               11              0

请注意，3850-2上没有特定策略，允许所有流量。

KSEC-3850-2#show cts role-based permissions 
IPv4 Role-based permissions default:
        Permit IP-00
RBACL Monitor All for Dynamic Policies : FALSE
RBACL Monitor All for Configured Policies : FALSE

在ISE上修改SG ACL后，在3850-1上添加permit tcp和cts刷新策略-然后接受telnet流量。

还可以使用Flexible Netflow（从IOS-XE 3.7.2开始是SGT感知）本地缓存来确认行为。

flow record cts-v4
 match ipv4 protocol
 match ipv4 source address
 match ipv4 destination address
 match transport source-port
 match transport destination-port
 match flow direction
 match flow cts source group-tag
 match flow cts destination group-tag
 collect counter packets long

flow monitor F_MON
 record cts-v4

interface GigabitEthernet1/0/3
 ip flow monitor F_MON input
 ip flow monitor F_MON output

结果显示从3850-2接收的流量。源SGT为0，因为接收的流量没有任何SGT（无cts链路），但目标组标记根据本地映射表自动替换。

KSEC-3850-1#show flow monitor F_MON cache 
  Cache type:                               Normal (Platform cache)
  Cache size:                              Unknown
  Current entries:                               6

  Flows added:                                1978
  Flows aged:                                 1972
    - Active timeout      (  1800 secs)         30
    - Inactive timeout    (    15 secs)       1942

IPV4 SRC ADDR    IPV4 DST ADDR    TRNS SRC PORT  TRNS DST PORT  FLOW DIRN  FLOW CTS SRC GROUP TAG  FLOW CTS DST GROUP TAG  IP PROT             pkts long
===============  ===============  =============  =============  =========  ======================  ======================  =======  ====================
150.1.7.1        224.0.0.10                   0              0  Output                          0                       0       88                    57
10.62.148.1      224.0.0.13                   0           8192  Output                          0                       0      103                     0
7.7.4.1          224.0.0.10                   0              0  Output                          0                       0       88                    56
10.0.0.1         10.0.0.100                   0              0  Output                          0                       0        1                  1388
150.1.7.105      224.0.0.5                    0              0  Output                          0                       0       89                    24
150.1.7.1        224.0.0.5                    0              0  Output                          0                       0       89                    24
10.0.0.100       10.0.0.1                     0           2048  Input                           0                       9        1                  1388

Netflow本地缓存可用于确认收到的流量。如果该流量被接受或丢弃，则由之前提供的cts计数器确认。

ISE还允许生成SXP绑定和连接报告，如下图所示。

200278-Configure-ISE-2-0-TrustSec-SXP-Listener-09.png

参考

修订历史记录

版本 发布日期 备注
1.0
01-Dec-2015
初始版本
TAC Authored

由思科工程师提供

  • 米哈尔·加尔卡斯
    思科TAC工程师

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