Dotaz: Po restarte nefunguje konektivita - HWaddress incomplete

[lieko]

Zdravim

Mam dva rovnake servery sluziace ako firewall prepojene cez cisco switch so zvyskom siete. Na oboch mi bezi heartbeat - ten zabezpecuje virtualnu ip, ktora sluzi ako gateway pre siet. Dnes som daval restart serverov a nastal problem.

Obidva servery prestali komunikovat s vnutornou sietou. Skusam pingat rozne PC vo vnutornej sieti, ale ziadne neodpoveda.Ked dam arp -a, tak v HWaddress je incomplete.

[root@fwa ~]# arp
Address                  HWtype  HWaddress           Flags Mask            Iface
192.168.1.11                     (incomplete)                              eth1
192.168.1.13                     (incomplete)                              eth1
80.94.43.89              ether   00:16:47:5E:B6:1A   C                     eth0
192.168.1.14                     (incomplete)                              eth1

Skusal som zmenit kabel nepomohlo. Ked som sa prepojil napriamo (nie cez switch) s tou sietovkou tak pingy isli.

#ip link show

2: eth0: {BROADCAST,MULTICAST,UP,LOWER_UP} mtu 1500 qdisc pfifo_fast qlen 100
    link/ether 00:30:48:94:46:38 brd ff:ff:ff:ff:ff:ff
3: eth1: {BROADCAST,MULTICAST,UP,LOWER_UP} mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:30:48:94:46:39 brd ff:ff:ff:ff:ff:ff

#ip addr show

2: eth0: {BROADCAST,MULTICAST,UP,LOWER_UP} mtu 1500 qdisc pfifo_fast qlen 100
    link/ether 00:30:48:94:46:38 brd ff:ff:ff:ff:ff:ff
    inet 80.94.43.91/29 brd 80.94.43.95 scope global eth0
    inet6 fe80::230:48ff:fe94:4638/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: {BROADCAST,MULTICAST,UP,LOWER_UP} mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:30:48:94:46:39 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.2/24 brd 192.168.1.255 scope global eth1
    inet6 fe80::230:48ff:fe94:4639/64 scope link 
       valid_lft forever preferred_lft forever

Pred restartom som nic nemenil co by mohlo ovplyvnit (jedine hostname, ten som zo zufalstva aj vratil naspat ale ani to nepomohlo). Skusal som vypnut heartbeat ale nepomohlo. Skusal som zmenit ip adresu na inu z daneho rozsahu - tiez nepomohlo.

Nechapem, ze to doteraz islo a zrazu to nejde. Viete niekto poradit co s tym ?

Odpovědi

[ZAH]

Restartoval jste také ten switch. Sice je to Cisco, ale osobně jsem podobnou anabázi zažil s 3com, než šlo do křemíkového nebe.

[lieko]

nerestartoval

ostatne zariadenia na sieti komunikuju v poriadku, problem maju len tieto dva servery

Ak by to pomohlo sietovky na serveroch

06:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller
07:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller

[ZAH]

Další nápad, je ta síť na Gigu, jestli ne zkusit ručně nastavit rychlost síťovek na 100.

[lieko]

aj sietovka aj port na switchi su Gigove

[lieko]

som si vsimol ze na cisco switchi ked dam sh int tak

 media type is unknown media type

akurat neviem ako je to mozne

[lieko]

tak nie to som sa pomylil, je tam

 media type is RJ45 

[Michal Kubeček]

Vypadá to, že buď neodejde ani ARP dotaz nebo na něj nepřijde odpověď. Co ukáže 'ethtool eth1'?

[lieko]

# ethtool eth1
Settings for eth1:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
                                1000baseT/Full 
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
                                1000baseT/Full 
        Advertised auto-negotiation: Yes
        Speed: 1000Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        Supports Wake-on: umbg
        Wake-on: g
        Current message level: 0x00000007 (7)
        Link detected: no

[Michal Kubeček]

Tak to vypadá spíš na hardwarový problém.

[lieko]

na obidvoch serveroch naraz ? to sa mi zda ako prilis velka nahoda

[lieko]

tak nakoniec pomohol reload obidvoch switchov

vdaka za pomoc