grizzly_ripper Posted April 6, 2012 Posted April 6, 2012 UBR'ы не получают информацию о Upstream Power и Downstream Power от модемов. Старожилы в конторе говорят, что раньше работало. При мне настройки касающиеся конкретно части Docsis не менялись. Вывод show cable modem <mac> verbose MAC Address : <mac> IP Address : 10.5.0.179 Prim Sid : 181 QoS Profile Index : 5 Interface : C1/0/U0 sysDescr : Upstream Power : 0.00 dBmV (SNR = 28.26 dBmV) Downstream Power : 0.00 dBmV (SNR = ----- dBmV) Timing Offset : 996 Initial Timing Offset : 996 Received Power : !25.00 MAC Version : DOC2.0 QoS Provisioned Mode : DOC1.0 Enable DOCSIS2.0 Mode : Y Phy Operating Mode : tdma Capabilities : {Frag=N, Concat=Y, PHS=N, Priv=BPI} Sid/Said Limit : {Max Us Sids=0, Max Ds Saids=0} Optional Filtering Support : {802.1P=N, 802.1Q=N} Transmit Equalizer Support : {Taps/Symbol= 1, Num of Taps= 24} Number of CPE IPs : 2(Max CPE IPs = 255) CFG Max-CPE : 255 Flaps : 4(Apr 5 01:55:55) Errors : 0 CRCs, 0 HCSes Stn Mtn Failures : 0 aborts, 0 exhausted Total US Flows : 1(1 active) Total DS Flows : 1(1 active) Total US Data : 67005412 packets, 1800666036 bytes Total US Throughput : 99 bits/sec, 0 packets/sec Total DS Data : 96753702 packets, 2974097705 bytes Total DS Throughput : 93 bits/sec, 0 packets/sec Active Classifiers : 0 (Max = NO LIMIT) DSA/DSX messages : permit all Total Time Online : 23h42m Настройка UBR'a: cable config-file modemboot_all frequency 378000000 service-class 2 max-upstream 2048 service-class 2 guaranteed-upstream 16 service-class 2 max-downstream 32768 service-class 2 max-burst 1800 cpe max 255 timestamp !DHCP для модемов ip dhcp pool CableInternet network 10.5.0.0 255.255.0.0 bootfile modemboot_all next-server 10.5.255.254 default-router 10.5.255.254 option 128 ip 10.5.255.254 option 4 ip 10.5.255.254 option 11 ip 10.5.255.254 option 10 ip 10.5.255.254 option 7 ip 10.5.255.254 option 2 hex 0000.2a30 option 66 ip 10.5.255.254 option 150 ip 10.5.255.254 option 43 hex 0803.0000.0c80.0669.6f73.2e63.66 dns-server <dns> lease 14 !DHCP для клиентов ip dhcp pool pcs-c4 network 10.19.0.0 255.255.0.0 next-server 10.19.255.254 default-router 10.19.255.254 option 128 ip 10.19.255.254 option 4 ip 10.19.255.254 option 11 ip 10.19.255.254 option 10 ip 10.19.255.254 dns-server <dns> lease 14 interface Cable1/0 ip address 10.19.255.254 255.255.0.0 secondary ip address 10.5.255.254 255.255.0.0 ip access-group acl_cable_in in cable tftp-enforce no cable packet-cache cable sync-interval 5 cable downstream rate-limit cable downstream annex A cable downstream modulation 256qam cable downstream frequency 378000000 cable downstream channel-id 0 no cable downstream rf-shutdown cable downstream rf-power 49 cable upstream 0 spectrum-group 5 cable upstream 0 channel-width 3200000 cable upstream 0 minislot-size 2 cable upstream 0 power-level 25 cable upstream 0 power-adjust threshold 2 cable upstream 0 power-adjust continue 3 cable upstream 0 power-adjust noise 20 cable upstream 0 unfrag-slot-jitter limit 8000 cable upstream 0 differential-encoding cable upstream 0 modulation-profile 1 cable upstream 0 admission-control 1000 cable upstream 0 equalization-coefficient no cable upstream 0 shutdown cable upstream 1 spectrum-group 2 cable upstream 1 channel-width 3200000 cable upstream 1 minislot-size 2 cable upstream 1 power-level 25 cable upstream 1 power-adjust threshold 2 cable upstream 1 power-adjust continue 3 cable upstream 1 power-adjust noise 20 cable upstream 1 unfrag-slot-jitter limit 8000 cable upstream 1 differential-encoding cable upstream 1 modulation-profile 1 cable upstream 1 admission-control 1000 cable upstream 1 equalization-coefficient no cable upstream 1 shutdown cable upstream 2 spectrum-group 3 cable upstream 2 channel-width 3200000 cable upstream 2 minislot-size 2 cable upstream 2 power-level 25 cable upstream 2 power-adjust threshold 2 cable upstream 2 power-adjust continue 3 cable upstream 2 power-adjust noise 20 cable upstream 2 unfrag-slot-jitter limit 8000 cable upstream 2 differential-encoding cable upstream 2 modulation-profile 1 cable upstream 2 admission-control 1000 cable upstream 2 equalization-coefficient no cable upstream 2 shutdown cable upstream 3 spectrum-group 4 cable upstream 3 channel-width 3200000 cable upstream 3 minislot-size 2 cable upstream 3 power-level 25 cable upstream 3 power-adjust threshold 2 cable upstream 3 power-adjust continue 3 cable upstream 3 power-adjust noise 20 cable upstream 3 unfrag-slot-jitter limit 8000 cable upstream 3 differential-encoding cable upstream 3 modulation-profile 1 cable upstream 3 admission-control 1000 cable upstream 3 equalization-coefficient no cable upstream 3 shutdown cable arp filter request-send 3 2 cable arp filter reply-accept 3 2 no cable ip-multicast-echo cable dhcp-giaddr policy pppoe enable group global no arp arpa hold-queue 4096 in hold-queue 4096 out ip access-list extended acl_cable_in permit ip 10.0.0.0 0.255.255.255 host 10.19.255.254 permit ip 10.0.0.0 0.255.255.255 host 10.5.255.254 permit ip 10.0.0.0 0.255.255.255 host <dns> permit ip host 0.0.0.0 host 255.255.255.255 deny ip any any Вставить ник Quote
passer Posted April 6, 2012 Posted April 6, 2012 (edited) Когда-то на sysadmins.ru я отвечал на такой вопрос. Можете посикать. Кратко суть в следующем: на модеме могут быть фильтра для snmp (задается комьюнити и откуда с этой комьюнити можно работать) и распространённая ошибка в том, что в последствии ip узла опрашивающего модемы может меняться, а вот в конфигах об этом никто не позаботился. Или же комьюнити не совпадает. В вашем же случае, когда конфиг модема творит сама cmts, самым простым решением проблемы - самому опросить модем по snmp, снять с него всю информацию о фильтрах, и дальше думать. P.S. На гуру DOCSIS'а не претендую, но есть ли особый философский смысл в том, чтобы отдавать на модем 2М в отдаче, тогда как дефолтный профайл модуляции от силы выжимает 3.5-4М на апстрим. Edited April 6, 2012 by passer Вставить ник Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.